Breast Cancer gets Worse in the Spring and Fall. But...Why?

969 Shikime 98 mijë

Seasonal illnesses from infectious diseases aren’t a new concept, but a few decades ago public health experts began to notice the same behavior in some non-infectious diseases like breast cancer. These patterns have helped us learn a lot about how our bodies interact with the environment.

Hosted by: Rose Bear Don't Walk
SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Silas Emrys, Charles Copley, Jb Taishoff, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Christopher R Boucher, Eric Jensen, LehelKovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer
----------
Looking for SciShow elsewhere on the internet?
Facebook: scishow
Twitter: scishow
Tumblr: scishow.tumblr.com
Instagram: thescishow
----------
Sources:
Skin Cancer
www.ncbi.nlm.nih.gov/pmc/articles/PMC3063695/
www.hindawi.com/journals/bmri/2014/538574/
www.who.int/uv/resources/fact/en/fs227toomuchsun.pdf
academic.oup.com/occmed/article/59/2/82/1386603
www.ncbi.nlm.nih.gov/pmc/articles/PMC2564815/
doi.org/10.1097/CMR.0b013e328343a619
Heart Disease
www.ncbi.nlm.nih.gov/pmc/articles/PMC3662093/
doi.org/10.1038/nrcardio.2017.76
www.ahajournals.org/doi/full/10.1161/01.cir.100.15.1630
www.ahajournals.org/doi/full/10.1161/01.CIR.100.3.280
www.ncbi.nlm.nih.gov/books/NBK538308/
www.ncbi.nlm.nih.gov/books/NBK554485/
Breast Cancer
link.springer.com/article/10.1007%2Fs10549-009-0676-7
pubmed.ncbi.nlm.nih.gov/24835144/
www.ncbi.nlm.nih.gov/pmc/articles/PMC3081679/
www.nejm.org/doi/full/10.1056/NEJMoa1809944
pubmed.ncbi.nlm.nih.gov/31884419/
www.ncbi.nlm.nih.gov/pmc/articles/PMC5503661/
doi.org/10.12659/MSM.890062
dx.doi.org/10.1590/1806-9282.65.5.699
www.nature.com/articles/s41598-017-05752-9
onlinelibrary.wiley.com/doi/pdfdirect/10.1002/ijc.24213
Image Sources:
www.istockphoto.com/vector/tumor-stock-illustration-gm1277806300-376919558
www.storyblocks.com/video/stock/young-woman-taking-her-temperature-with-a-digital-thermometer-while-blowing-her-nose-coughing-and-lying-in-bed-wearing-a-bathrobe-b6doqcfanjwgcv2lg
www.istockphoto.com/photo/four-season-tree-photo-manipulation-magical-nature-gm531535355-55438812
www.storyblocks.com/video/stock/flu-virus-3d-model-of-ah1n1-virus-n0vvfmxtxilvt7zho
www.istockphoto.com/photo/sick-woman-drinks-hot-drink-during-cold-weather-gm1054665214-281791468
www.storyblocks.com/video/stock/4k-tropical-sunset-palm-tree-at-sunset-sky-silhouette-of-palm-leaves-b2t1s62mgjc1qs6kl
www.istockphoto.com/photo/cancer-cells-vis-gm1284442686-381578226
www.istockphoto.com/vector/flat-sun-icon-gm1131727303-299754980
www.istockphoto.com/vector/sunscreen-cream-icon-set-flat-design-gm1219188024-356537790
www.istockphoto.com/vector/circulatory-system-anatomy-gm1196668508-341432074
www.istockphoto.com/photo/curious-rodent-gm155383577-19438348
www.storyblocks.com/video/stock/montage-of-a-tree-changing-through-the-four-seasons-hj50fhk
www.istockphoto.com/photo/heart-attack-concept-gm1128931450-298046977
www.istockphoto.com/photo/breast-cancer-awareness-and-prevention-gm1125075536-295610214
www.istockphoto.com/photo/unrecognizable-female-gynecologist-looking-at-a-mammogram-checking-for-breast-cancer-gm1171743466-324743232
www.istockphoto.com/photo/breast-cancer-breaststroke-gm1163077331-319248962
www.istockphoto.com/photo/photos-of-four-seasons-attached-to-dark-wooden-wall-seasons-on-dark-background-gm1084287002-290928679
www.storyblocks.com/video/stock/mom-holding-little-daughter-and-walking-in-field-b-b0svl0mqjjsvgm7g
www.istockphoto.com/photo/sun-on-blackboard-gm536854549-57998180
www.istockphoto.com/vector/melatonin-molecule-hormone-that-regulates-sleep-and-wakefulness-gm927863754-254511596
www.istockphoto.com/vector/vitamin-d-capsule-vector-icon-for-health-gm1128431928-297760015
www.istockphoto.com/photo/breast-cancer-breaststroke-gm1033239842-276708279

Komente

  1. Rob D
    Rob D
    15 ditë më parë

    Am I the only one that cringes when I hear the word "germs" (instead of virus or bacteria)

  2. Taylor Vance
    Taylor Vance
    15 ditë më parë

    Am I the only person who got " make sure you get diagnosed in the summer" from this?

  3. Aleksei Corleone
    Aleksei Corleone
    15 ditë më parë

    I guess goth chicks are screwed. They don't get any sun, and don't sleep.

  4. Crazy Kitten
    Crazy Kitten
    21 ditë më parë

    Am I the only one who gets distracted by her ear accessories?

  5. Troy Davis
    Troy Davis
    21 ditë më parë

    People with ovaries? You mean women? Has your show capitulated to madness ? Ok, some women may have had their ovaries removed, but then is women who still have their ovaries not clearer? Are you saying men who transition to women have ovaries? That would be news to me. Please don’t cave in to fanatics and respect women. It’s disgusting how some men who became women attack the very concept of womanhood. Men have oppressed women for millennia and only after a few decades after some women on the planet became a bit freer (not even a global majority), the Male Empire strikes back and destroys the very idea of women as a category of being. That’s just disgusting, and I’m talking as a man. I don’t want women to be erased by a bunch of fanatic former men and their extremist allies.

  6. Frostglow
    Frostglow
    23 ditë më parë

    If there is a connection to melatonin, could that help explain why women who work night shifts are more likely to develop breast cancer?

  7. Jordan Fetherolf
    Jordan Fetherolf
    23 ditë më parë

    Not sure why, but the lighting seemed off in this video.

  8. gio 59
    gio 59
    24 ditë më parë

    Well if it's exposure to sunlight that influences cancer, then Daylight Savings Time explains everything. Clearly the whole "Spring ahead, fall back" thing causes cancer. QED.

  9. The Sentient
    The Sentient
    25 ditë më parë

    "it's complicated"

  10. quincy simmons
    quincy simmons
    25 ditë më parë

    "We don't talk about cancer season" *Looks at zodiac tiktok*

  11. tom SHADY
    tom SHADY
    27 ditë më parë

    Why can't it be environmental? Less people having sex on the whole (excluding holidays) during winter and summer, so they don't notice the b00bies as much? Could be....

  12. Justin Fowler
    Justin Fowler
    28 ditë më parë

    Fall and spring are times when crops are heavily sprayed with pesticides and insecticides.

  13. Lifestyle Shenanigans
    Lifestyle Shenanigans
    28 ditë më parë

    I was diagnosed in the spring of last year. It was when I was most stressed from work. Maybe it has to do with stress levels?

    1. Unoriginal
      Unoriginal
      22 ditë më parë

      it could be because summer is warm and all and winter has lots of holidays, and i am not in work yet (im at school) but at school we usually have the most work in late spring and late autumn.

  14. smurfyday
    smurfyday
    28 ditë më parë

    I'm surprised researchers are assuming that dietary Vitamin D or melanin supplements are the same as naturally occurring ones. I thought it's pretty well established that they're different things, structurally and biologically. Supplementation just doesn't work, for the most part.

  15. banicata
    banicata
    29 ditë më parë

    "People with ovaries"????

  16. lost CubsFan
    lost CubsFan
    29 ditë më parë

    this is such horse crap. melanoma takes years to go from benign nevi to aggressive melanoma. Increased diagnoses in the summer has nothing to do with the onset of disease, it has to do with people wearing less clothes and being more aware of blemishes on their skin during warmer months. I'd like to see the primary data on the "clear seasonal spikes" in breast cancer. Epidemiologists love to use the most powerful statistics they can to wring some conclusion out of data that often doesn't warrant it, just so they can publish a paper. You can't publish a paper saying "oh look, there is no seasonal difference in cancer diagnosis", because that's the assumption, so they do their best to find "surprising" findings.

  17. Seadalgo
    Seadalgo
    Muaj më parë

    Host: Thyroid Hormone Me: Uhhh which one?

  18. Magnus Bergner
    Magnus Bergner
    Muaj më parë

    Even if the evidence is lacking you can't really go wrong with eating a little more vitamin D and getting a sun lamp to use during winter. Could help with Seasonal Affective Disorder as well.

  19. K H
    K H
    Muaj më parë

    Soooooo complicated- imagine all the genetics and epigenitic mechanisms that interact with that seasonality like those specific tumor suppression genes that are mutated in a some cancers (a lot of them, all of them??)

  20. Threefive Nine
    Threefive Nine
    Muaj më parë

    How does the breast cancer diagnoses compare to the number of doctor's appointments that women and other people susceptible make through the year? I can imagine mothers in charge of child care during summer and winter vacation wouldn't be as able to make time for a check-up.

  21. primero ultimo
    primero ultimo
    Muaj më parë

    What about fruits and vegis some trees flower when spring comes around and fruit. some fruit at the end of summer at fall season what if its the flavenoids or some

  22. Zes
    Zes
    Muaj më parë

    wrr

  23. Philip Anthony Kenny
    Philip Anthony Kenny
    Muaj më parë

    😲

  24. darookmezd
    darookmezd
    Muaj më parë

    Is this correlation only observed in northern hemisphere?

  25. Eli Santana
    Eli Santana
    Muaj më parë

    The host is making me want to visit Montana again. I met and interacted with several Native Americans while hiking on beautiful reservation land and I've been yearning to see those beautiful mountains again.

  26. Nature's Finest
    Nature's Finest
    Muaj më parë

    How does melatonin protect us during the winter?

  27. A friendly spazmoid
    A friendly spazmoid
    Muaj më parë

    3:24 ‘people with ovaries’ 😐😐

  28. Preposterou Spraq
    Preposterou Spraq
    Muaj më parë

    Lol. "are seen in people with ovaries" so more than likely women!?! Not that hard to say the word.

    1. Preposterou Spraq
      Preposterou Spraq
      Muaj më parë

      @Threefive Nine oh ok, didn't realize that trans men would have working ovaries. Also didn't consider those that needed to remove thier ovaries

    2. Threefive Nine
      Threefive Nine
      Muaj më parë

      The ovaries are very relevant. Beyond including trans men, it also reflects that cis women that have had ovaries removed are impacted differently.

  29. greenhalo xbox
    greenhalo xbox
    Muaj më parë

    It could also be that as spring comes around people tend to show more skin and also notice more about their body thus the spring increases in diagnosis and for the fall there is a noticeable increase in seasonal checkups heading towards winter cold and flu season. So i would think it might just be that we're only finding more cases not soo much that there are more cases to find?

  30. Naved
    Naved
    Muaj më parë

    My mom struggle because of breast cancer doctor cut her infected breast she recovered stage 3 after 3 years cancer returned spread all over body one by one kidney to lungs veins turned into black last day she vomiting something black black Nov 13 2017 she passed away Sorry My English is not good I'm not native English speaker

  31. Clay Owlglass
    Clay Owlglass
    Muaj më parë

    I can tell you exactly why we see more coronary artery disease in winter: Synthetic Vitamin D. Synthetic D is a toxin, and _no one should take it._ But obviously, more people take it in the winter than in any other time of year for reasons that are well-understood. Taking synthetic D worsens magnesium deficiency. This causes the body to break down bone tissue at a higher rate to get the magnesium it needs. Since the body can't pick and choose what it takes from bone, the minerals the body _doesn't_ lack (usually calcium) get deposited in soft tissue. This is the cause of heart disease _in general._ If we added magnesium to food fortification programs, we would see a huge decrease in heart disease, and if we stopped taking synthetic D supplements, we wouldn't see a winter increase in heart disease.

    1. Clay Owlglass
      Clay Owlglass
      Muaj më parë

      As other DFTBA channels have taught us, bone evolved to be a repository of minerals - nothing else. Each creature with bones will see an increase in soft tissue mineralization all over its body that gradually increases across the duration of its entire life. This is the most important feature of aging. It's the reason older people get osteoporosis and arthritis. It's why they get dementia. It's why they have strokes. It's the most important thing for medicine to understand, and it just....doesn't understand it, even though evolutionary biologists have clearly explained this. The fact that our food is fortified with calcium but NOT magnesium, as well as a ton of synthetic D, is an enormous driver of so many different kinds of disease.

  32. Richard Sayre
    Richard Sayre
    Muaj më parë

    "People with ovaries"....you mean women?

    1. Jasper
      Jasper
      Muaj më parë

      ...so you don't think women are people? I think that's a you problem.

  33. Solo Tekle
    Solo Tekle
    Muaj më parë

    Melatonin supplement have any effect?

  34. The Dank Knight
    The Dank Knight
    Muaj më parë

    People with ovaries

  35. Genghisnico13
    Genghisnico13
    Muaj më parë

    Something to keep in mind is that a lot of vitamin D supplementation studies have an insignificant amount (400IU) and don't measure the blood level to make sure they are getting enough. This is because medical teaching is based on dogma, not on science and logic. 400 IU is what you get after 1 minute of sun exposure.

  36. Joshua Gonzales
    Joshua Gonzales
    Muaj më parë

    Being hotter place means increases body heat/ it's cells metabolism meaning more cell activity and division that leads to higher chances of cancer

  37. U D
    U D
    Muaj më parë

    Not trying to be rude but her eyebrows are kinda distracting

  38. Paige Steele
    Paige Steele
    Muaj më parë

    Vit D!

  39. ImJyun
    ImJyun
    Muaj më parë

    Its funny i find that all the scishow hosts talk in the same tone, with the same accent,facial expression and little things like pauses and stuff, makes me wonder if they jz replace the face on a base human model xD

  40. SlimThrull
    SlimThrull
    Muaj më parë

    1:25 Unlikely. Since it takes years and decades of damage from UV radiation to do enough damage to cause cancer, it's highly unlikely that there are more skin cancer cases in the summer. However, they are probably more likely to be detected in the summer. People wear less clothing and are around other people more frequently. This makes skin lesions easier to see and are more likely to be pointed out. The other thing against this idea is that it takes time for cancer to develop. It isn't like you get exposed to UV light and you get a tumor the next day. Tumors take time to grow. The sun emitting more UV is certainly a cause of cancer, but it doesn't do it so soon.

  41. panlomito
    panlomito
    Muaj më parë

    I was really interested untill you began blabbering about "people with ovaries"...

    1. panlomito
      panlomito
      Muaj më parë

      @Julie Gerstel Trans men/women is a social construct and has nothing to do with biological facts. I would have agreed if the writer was speaking of “women without ovaries”, that is biological correct.

    2. Julie Gerstel
      Julie Gerstel
      Muaj më parë

      Wdym? People have ovaries. If you're referring to saying that they are all females, that's wrong, because trans men also have ovaries, but they are men

  42. Cientista Literato
    Cientista Literato
    Muaj më parë

    Breast Cancer gets Worse in the Spring and Fall. But...Why? *because the sun is a deadly laser*

  43. Garden Seed Store
    Garden Seed Store
    Muaj më parë

    "people with ovaries" lol

  44. Antonis Teggeris
    Antonis Teggeris
    Muaj më parë

    "in people with ovaries" I think the word you are looking for is women lol.

    1. Antonis Teggeris
      Antonis Teggeris
      Muaj më parë

      Ah that is saying that identity is defined by labels instead of characteristics.But since labels are there to imply the existence of the characteristics they describe,using a label where it doesnt belong is simply wrong.trans men are still women unless we change the definition of the word woman.but then what would we call actual women?we would need a new word.

    2. Julie Gerstel
      Julie Gerstel
      Muaj më parë

      Not all people with ovaries are women. Take, for example, trans men. They're still men even though they have female body parts

  45. Wade Crudgel
    Wade Crudgel
    Muaj më parë

    Is it potentially the case that the diagnosis itself is seasonal rather than the disease? For example, I can’t imagine that skin cancer could develop just during the summer, and maybe it’s more that people are looking for it during that time period and are more likely to get it checked out, or doctors are more likely to look for it. Most likely it’s a combination if anything, but it’s just something I was thinking about

  46. MrDragan
    MrDragan
    Muaj më parë

    Wel i was always interested in you're video's. But I'm realising that it's so simplyfied that it makes correlation sound like causation (its clear you guys are aware but it stil makes it hard to discern fact form posebilty). Also you only name the date of your included studies that are recent. Ofcourse content needs to be fun but just wanted to share. :)

  47. diamine665
    diamine665
    Muaj më parë

    Why are some letters in the text graphics bigger or colored differently? How is that supposed to help?

  48. Sebastien H
    Sebastien H
    Muaj më parë

    Remarkably messy and boring and uninspired video. Bad.

  49. Necromancer Sloth
    Necromancer Sloth
    Muaj më parë

    Yaayyy you said "People with ovaries!" Hooray for accurate terminology, I feel so included :)

  50. Terry Maximum-Effort
    Terry Maximum-Effort
    Muaj më parë

    Could these patterns be behavioural? Like thinking logically from anecdotal experience, changes of season are when people tend to change clothes and realise they don’t look the same (eg. They have lost weight, breasts have changed shape, and other habits? Could be that summer is when we are most likely to see our breasts and therefore remember to check them and find a cancer earlier??

  51. Koneko Naru
    Koneko Naru
    Muaj më parë

    Sun: will give you some cancers and protect you from others. Choose your fate. Me: takes my vitamin d supplement and stays inside

  52. king james488
    king james488
    Muaj më parë

    people eat more preserved food in the winter... all those preservatives.

  53. Yvan Hurtado
    Yvan Hurtado
    Muaj më parë

    people with ovaries? you meant to say women.

    1. Julie Gerstel
      Julie Gerstel
      Muaj më parë

      Also trans men but yeah

  54. MadDoofer
    MadDoofer
    Muaj më parë

    Cancer season 2 peaks 2 breasts Duh

  55. yowandbm
    yowandbm
    Muaj më parë

    Those Vitamin D studies are all done with very low concentrations of Vit D, i.e. less than 4000IU which cannot increase blood concentration significantly. We get a lot of studies like those which conclude multivitamins are not needed, omegas, vit D and other. Not to mention they are done with aged people. It's bad science in play there, bad design of experiment. 5000-10000 IU of vit D per day is what's significant and blood concentration should be monitored periodically to adjust right dose for YOU (key word).

  56. LBC Santiago
    LBC Santiago
    Muaj më parë

    Very interesting.

  57. Apocalyp Snow
    Apocalyp Snow
    Muaj më parë

    Ngl I thought the increase of coronary heart disease during winter was because of hearty Thanksgiving and Christmas dinners

    1. little fox
      little fox
      Muaj më parë

      Yes, but it is the same in the southern hemisphere, and we have rich Christmas food in the summer.

  58. Selkouni
    Selkouni
    Muaj më parë

    Thank you for the script writer for writing "people with ovaries".. - yours, a trans masculine nerd

    1. Kevin
      Kevin
      Muaj më parë

      @Selkouni gotcha. I'd be very surprised if a medical professional didn't take your mammogram seriously, regardless of your sex or gender. But I am also glad that the wording provided you with happiness, though I'm not sure it was the point.

    2. Selkouni
      Selkouni
      Muaj më parë

      @Kevin Well, of course. Cis men can get breast cancer, and some transgender men have ovaries. I was simply grateful for the inclusive language at the topic of the ovaries' playing a role in the context of breast cancer - it's small things that matter and go a long way. Many masculine transgender folk who are at risk for breast cancer or reproductive health issues are often overlooked and mistreated, and I do believe that a presenting such topics with an inclusive narrative can help people outside of our community understand snd accept us better 🙏

    3. Kevin
      Kevin
      Muaj më parë

      I mean men can get breast cancer, too. I believe the ovaries distinction was placed there to discuss the correlation for people with, well, ovaries.

  59. Marian Pizeno
    Marian Pizeno
    Muaj më parë

    Found out I had breast cancer 2 weeks after my 31st birthday... March 2017. PLEASE do your monthly self exams! Cancer does NOT discriminate!!!

  60. twocvbloke
    twocvbloke
    Muaj më parë

    Just shows how interconnected humans are with the environment around them, and imbalances in exposure to the sun results in bad things happening...

  61. Jordan Walters
    Jordan Walters
    Muaj më parë

    There are so many changes to peoples daily lives depending on the time of year, from the amount of exercise, food, alcohol, socializing, sleep or sunlight. It's almost impossible to find the single or multiple causes without having some futuristic implant that can track every single aspect of your health while also tracking everything about your daily routine and also be tracking the Earths position around the sun and having access to the weather and solar weather data. The human body is incredibly complex but so is our daily routine and when you add the variation of weather, length of day or solar activity you're guaranteed to not be able to calculate which factor is the cause of disease since every factor interacts with all the others. Everything in this Universe is messy.

  62. Taylor
    Taylor
    Muaj më parë

    Holy cow! Im showing this video to my mom. She’s not super into science stuff like my dad was, and I am, but this could really help her once she goes in for cancer screenings. Thank you SciShow!! You never fail to amaze me :)

  63. Chris
    Chris
    Muaj më parë

    does that mean that homosexual men who are known to use nitric oxide as a stimulant have less chance of heart attacks? i'm being serious if we're able to pick up patterns on a micro level or only broader patterns. broader patterns are self evident.

  64. Dominic Lee
    Dominic Lee
    Muaj më parë

    3:25 "people with ovaries" aren't they women?

    1. panlomito
      panlomito
      Muaj më parë

      @Angelika Skoroszyn How about "women without ovaries"?

    2. Angelika Skoroszyn
      Angelika Skoroszyn
      Muaj më parë

      Sometimes even biological women don't have ovaries. Either because they were cut out bc of medical reasons or never properly developed. Then there're trans women who don't have ovaries but who take female hormons and so their biology is no longer the same as men's On a side note involving trans people in research papers can help determine how much a sex related disease is caused by genes and how much by hormons Saying "without ovaries" is just more specific

  65. Slithy
    Slithy
    Muaj më parë

    Moral of the story: we need to up our cold time booba kneading game to help early detection rates

  66. Cri Dr
    Cri Dr
    Muaj më parë

    " in people with ovaries " .. facepalm

    1. Julie Gerstel
      Julie Gerstel
      Muaj më parë

      Why facepalm? It's just women and trans men

  67. Boriss Vassiljev
    Boriss Vassiljev
    Muaj më parë

    the sun has so many benefits, that scaring people to wear sunscreen is kinda evil

  68. Mr Rod
    Mr Rod
    Muaj më parë

    Oh no! You are not allowed to say breast cancer anymore.

  69. edi
    edi
    Muaj më parë

    How about male cases of breast cancer? If it follows a similar pattern, then we can rule out a few hormones...

  70. Gaaraape
    Gaaraape
    Muaj më parë

    That's weird, isn't cold conditions supposed to stimulate more thyroid production? That's literally what it says in my medical physiology textbook

  71. P
    P
    Muaj më parë

    3:20 - people with ovaries.. there’s a word for that... hmm what was it .. woomud? Wahmind? Wimmun?

    1. P
      P
      Muaj më parë

      @Bex Exceptions dont disprove the rule. The video mentioned that veins constrict in response to temperature. Do you think that Scishow should have said 'people with constricting veins' in acknowledgment that some people have venous insufficiency disorder? SciShow also referenced 'seasonal cycles' when by exceptional logic they should have acknowledged that some people do not live in ordinary seasonal environments such those North Pole. To acknowledge exceptions all the time is ridiculous, and nobody cares about any exceptional condition apart from when it pertains to certain identity groups.

    2. Bex
      Bex
      Muaj më parë

      I have ovaries and I’m not a woman 🤷🏻

    3. Kelly Clowers
      Kelly Clowers
      Muaj më parë

      Aside from trans people, there are intersex people and people who have had ovaries removed, so yeah. People with ovaries is correct, "women" would not be

  72. SuperClips
    SuperClips
    Muaj më parë

    alfirst.info/load/eaCOlW3VeNh8e30/video

  73. Bent Monkey
    Bent Monkey
    Muaj më parë

    It’s always such a pleasure watching the evolution of a new presenter on this channel as they find their “voice” and get more comfortable and confident in their abilities

  74. Christophe B
    Christophe B
    Muaj më parë

    Are these data of the rates and the studies of vitamin D and melatonin just from america and how wide so location, wealth/class, and race and if it actually is diverse did they take this into account? cuz all of these interact heavy with vitamin D like how much sunlight based on location, skin color how much vitamin d get from sun, and class how much you will be outside but also diet. most people that take vitamins dont need the implementation because they care enough about their health which is why they take vitamins also doesnt vitamin D stop/prevent melatonin production why you dont take vitamin d at night

  75. IIARROWS
    IIARROWS
    Muaj më parë

    When you have to record a SciShow episode, but you have a special night with your relevant other in 10 minutes.

  76. LeonidasSthlm
    LeonidasSthlm
    Muaj më parë

    Great video!

  77. tavdy79
    tavdy79
    Muaj më parë

    Another pattern worth noting: it's long been known that in areas with temperate climates seasonal depression peaks in winter. Vitamin D deficiency caused by a lack of sunlight plays an important role, however that's not the whole story. Depression can also be triggered by cytokines, the chemicals released by the body as part of an immune response to certain viruses such as most types of influenza, rhinovirus, and coronavirus. This means the annual cold and flu season also influences the seasonal spike in depression. It also explains why there is a second smaller spike in late spring to early summer: this is the time when pollen counts are highest, and pollen allergies also trigger the release of cytokines.

  78. Robert Schlesinger
    Robert Schlesinger
    Muaj më parë

    Very interesting, informative and worthwhile video. Many thanks for the links to the references.

  79. Connor
    Connor
    Muaj më parë

    shes my wcw

  80. TheFedoraDuel
    TheFedoraDuel
    Muaj më parë

    "people with ovaries?" Really? You mean Women? And you call yourself a science channel.

    1. Sam N.
      Sam N.
      Muaj më parë

      No she absolutely does not. Ignoring trans people entirely for a moment, I had a medical hysterectomy due to cancer and while I kept my ovaries, many women do not (though they usually try to leave the ovaries to prevent heart attacks and such), and things affected by estrogen will be very different in women who have had their ovaries removed compared to those who are pre-menopausal and have their ovaries. Post-menopausal women are kind of in between on estrogen production. Secondly, due to various intersex conditions, someone could have chromosomes/gonads/genitalia/secondary sexual characteristics someone could be technically/officially male but have ovaries. That would greatly impact his healthcare needs as it there are far more things that seem to line up along such lines, like heart attacks typically presenting differently in women and men. Some of these are tied to hormones or chromosomes and thus could go either way... and some appear to be tied to gender not sex, though that isn't well-studied (we are still trying to get science to recognize that symptoms in half the population are not "atypical presentation," so we have a ways to go on any research that doesn't assume educated young men are the baseline for all of humanity). And that brings us to the third point, but the one most pertinent here: whatever you think about trans people, they exist, and excluding them in scientific and medical discussion can lead to them not getting the right medical care for their body. For example, as long as someone, regardless of their gender identity, has a cervix, that cervix needs to get checked regularly for cervical cancer. Furthermore, as I alluded to above, some things do seem connected to gender not sex, and while that might be culturally influenced rather than innate in some cases (like maybe women in one culture have more or less of certain nutrients than men), it does need to be distinguished from things that are sex-determined. For example, ADHD often presents with hyperactive type in boys and inattentive type in girls. This doesn't appear to be physiologically based, which means it likely is based on how the brain works and sees itself, and that is where gender comes into play. Given inattentive type in girls is often not noticed until later if at all and that is almost entirely culturally dependent (a quiet girl is seen as well-behaved and not questioned so often no one realizes she is off daydreaming or utterly lost in understanding the assignment because the things didn't connect in her mind). So in all three cases the only appropriate scientific approach is to refer to the relevant organs and hormones so people know that is the affected thing and know how it might change their risk factors for things like cancer. So maybe realize that there is a lot more to science than just stating the obvious and that the lives of many people could depend on clear and open communication that encompasses the right people that need the information.

  81. Jack Schitt
    Jack Schitt
    Muaj më parë

    It makes sense.

  82. i like
    i like
    Muaj më parë

    She doesn't speak clear enough. Can't watch at 2x speed comfortably

  83. Phineas Faber
    Phineas Faber
    Muaj më parë

    For breast cancer and Vitamin D link. Could you do a latitude study? Checking rates among different skin shades? Maybe find rates from areas with high vitamin D diets such as fish based to low vitamin D areas/diets at similiar latitudes and insolation? What about office workers vs women who are more likely to be outside?

  84. Fausto Levantesi
    Fausto Levantesi
    Muaj më parë

    "people with ovaries"??? LOL...

    1. Thalsaaria
      Thalsaaria
      Muaj më parë

      @Fausto Levantesi Are you really getting triggered by scientific language? If you are specifing people by one identifier like brown eyes (or short hair, removed appendix etc) you just say people with brown eyes . After all in the video the specified that in people with ovaries past menopause, and therefor much lower estrogen levels, the seasonal cycle can be seen. So instead of whining about Newspeak/cancellation/ end of western society you could read up about some basic biology. You will see that identifiers within groups of people don't have anything to do with propaganda.

    2. Fausto Levantesi
      Fausto Levantesi
      Muaj më parë

      @Thalsaaria Oh shut up! This has nothing to do with science, neutrality or equality. It's a kind of NewSpeak. It's the worst kind of ideological propaganda. It's mere provocation. Saying "WOMEN have a higher risk of getting breast cancer because the estrogens produced by their ovaries promote oncogenesis" is more than enough for everybody to understand. If a transman is not completely dumb, he will understand that this sentence refers to him too. And if he gets dysphoric by hearing this sentence, he should definitely gets his meds checked by his psychiatrist...

    3. Thalsaaria
      Thalsaaria
      Muaj më parë

      @Fausto Levantesi have you even considerd ciswomen who got ther ovaries removed or were born without them? What about cismen with ovaries? It's not "ideological extremism" its science. And the only people getting offended by correct language are fragile individuals indoctrinated by far right propaganda. As someone watching videos about science ( okay scieshow is pretty much entry-level complxity) you should have the abitlity of critical thinking. You know life is much easier when you dont't listen to those fearmongering types on the rightwing.

    4. Fausto Levantesi
      Fausto Levantesi
      Muaj më parë

      @Thalsaaria You know exactly what I mean... It's ridiculous that one wouldn't use the word "women" just because 0.00001% of the population could get offended. This is a typical example of ideological extremism.

    5. Thalsaaria
      Thalsaaria
      Muaj më parë

      You know that cismen can develop breastcancer?

  85. Jovan Weismiller
    Jovan Weismiller
    Muaj më parë

    Thanks, Rose. I have CHF and this was helpful.

  86. oogajiggawooga
    oogajiggawooga
    Muaj më parë

    Am I the only one bothered by her pronunciation "tempi-cher"? Probably -.-

    1. Snowshowslow
      Snowshowslow
      Muaj më parë

      Well nów I'm bothered by it ;-)

  87. Zuxxkij
    Zuxxkij
    Muaj më parë

    "people with ovaries" 🤔

    1. panlomito
      panlomito
      Muaj më parë

      @Bex I do see a problem with men and women that don't (want to) see the difference between men and women.

    2. Bex
      Bex
      Muaj më parë

      I am a person with ovaries and I see no problem with this

    3. Θώθ
      Θώθ
      Muaj më parë

      I see nothing wrong

  88. B
    B
    Muaj më parë

    For the algorithm.

  89. Dickvourer d Cocknivore
    Dickvourer d Cocknivore
    Muaj më parë

    People be eating 13 servings of carbs in Christmas and they're wandering why there's a spike in CADs

    1. Clockwork King
      Clockwork King
      22 ditë më parë

      computer assisted designs?

  90. Jane Shevtsov
    Jane Shevtsov
    Muaj më parë

    UV light does cause skin cancer, but it takes years for this to happen. It's more likely that people see growths more easily when they wear less clothing. Or they get a sunburn and it reminds them to see a dermatologist.

  91. Luke Troeller
    Luke Troeller
    Muaj më parë

    Still missing the old hosts

  92. JM1993951
    JM1993951
    Muaj më parë

    I love the channel and the commenters that it draws. Never any hostility because any science deniers are either deterred by the science or ignored/down voted into comment oblivion.

  93. Kai None
    Kai None
    Muaj më parë

    Vitamin D studies are garbage. They’re all meta-analyses showing increased overall survival for every disease known to man. But then when randomized trials occurs, they’re all negative. Almost always attributable to confounders like performance status (Bedbound and malnourished = low Vit D) rather than the Vit D level itself.

  94. Benjamin NH Lam
    Benjamin NH Lam
    Muaj më parë

    LOVE the subtle labelling of "people with ovaries" instead of women. Very inclusive and also more scientifically correct for people with complicated sex biology!! 👏👏

  95. Dr Yang
    Dr Yang
    Muaj më parë

    "Exposure to cold conditions decreases thyroid hormone levels " ,you're sure???cause in the case of hypothyroidism, one has cold intolerance.

  96. james wright
    james wright
    Muaj më parë

    Pollen Pollen is usually high in iron content. Look at hemochromatosis to see the interaction with the metabolism. I personally have controlled for variables such as diet and exercise. My Ferritin level jumps every spring. After seeing that correlation, I went to an allergist. I am allergic to Elm which is very active in the spring. Having an allergy means that the immune system is sensitive to the allergen. Every given week of every year sees our bodies readjust to the new botanical output. Vaccination Theory. Further, before I began therapeutic phlebotomy for my HH, I suffered what many call a chronic appendicitis. With iron level control - the chronic appendicitis went away. HH is also known as the "bronzing disease" because some of us who have it actually turn a bronze color with too much exposure to water. That means there is a link between HH and skin health. Iron - Vitamin D metabolism - Breast health etc. My point is that when one sees a seasonal pattern - maybe they should look to the seasonality of our environment? However, that won't happen. The book on HH - written by the Iron Disorders Institute - actually has a chapter about how difficult it is to get doctors to educate themselves - even when they are given a free book about the issue !

  97. joseph-mario pelerin
    joseph-mario pelerin
    Muaj më parë

    its a theory from the 1960s ffs.... unfounded! if you stop being enchanted by the layout of the video...

  98. Jack Thompson
    Jack Thompson
    Muaj më parë

    the data is coming from diagnoses, diagnoses of breast cancer have seasonal variance

  99. Everything School Never Taught You
    Everything School Never Taught You
    Muaj më parë

    I wonder what being cooped up for a whole year does to ones health and the seasonal correlations.

    1. Mister K
      Mister K
      Muaj më parë

      flu cases have been lower than ever, even tho the seasonal flu high has already passed.. so when we´re talking about infectious diseases, the hygiene measures and masks help a lot. Also, nobody has been "cooped up" for over a year. But if you wanna know, maybe visit any prison in your local area and talk to some long term inmates. Because unlike you they have actually been cooped up for years. But nobody ever talked about negative eddects on their health... but when people are supposed to stay inside for a month suddenly it´s a death sentence

  100. Techno Wiz
    Techno Wiz
    Muaj më parë

    Wow that's an apt title for my autobiography