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How Sensible Sun Exposure Benefits Your Health -Holick interview May 2022

Interview by Grassrootshealth

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Table of contents


About Dr. Holick’s Background in Vitamin D & Sunshine Research

Dr. Holick has been researching vitamin D since 1969

He was the first to identify the major circulating form of vitamin D in human blood as 25-hydroxyvitamin D3, also known as 25(OH)D3

He isolated and identified the active form of vitamin D as 1,25-dihydroxyvitamin D3, determined the mechanism for how vitamin D is synthesized in the skin, and demonstrated the effects of aging, obesity, latitude, seasonal change, sunscreen use, skin pigmentation, and clothing on vitamin D synthesis

He was elected as a Fellow for the American Society of Nutrition (ASN), was inducted into the Orthomolecular Medicine Hall of Fame, and has received many awards including The Linus Pauling Prize in Human Nutrition, The General Clinical Research Center’s Program Award for Excellence in Clinical Research from the National Institutes of Health, and more

“A Key Question to Answer: Why would Mother Nature have us depend on sunlight to produce vitamin D?” ~Dr. Holick


Question #1: In your book “The Vitamin D Solution” you discuss why sun and supplements aren’t the same. You say “If the body could say which method it prefers to get its daily dose of vitamin D, it would hands down give a standing ovation to sunlight sources of vitamin D rather than a bottle.” Can you elaborate on this point for our viewers?


What is the difference to your body in vitamin D made from sun exposure through your skin versus that ingested from vitamin D3 supplements?

Key Points

  • About 60% of vitamin D3 taken from supplements becomes bound to vitamin D binding protein, with the rest excreted through the liver and bile
  • Vitamin D3 lasts 2-3 times longer when made in skin, and 100% is bound to vitamin D binding protein and utilized by body
  • As soon as pre-vitamin D3 is made, it also absorbs UV light and is converted to other photoproducts with their own unique biological properties, possibly playing a role in reducing the risk of skin cancer

Question #2: What other products are created in the body when it is exposed to sunlight, and how are they beneficial to our health?

Key Points

  • The sunshine produces different wavelengths of light and radiation that the body is exposed to
  • UVA stimulates the release of nitric oxide in the skin cells, and also stimulates an enzyme to make more nitric oxide
  • Small doses of carbon monoxide are released by hemoglobin molecules, which acts as a potent vasodilator with a direct effect on the nervous system and anti-inflammatory actions
  • The POMC gene in the pituitary is also found in the epidermis; when exposed to sunlight the gene is turned on and is responsible for the stimulation of corticosteroids and beta endorphins
  • Sunlight is also responsible for the regulation of the circadian rhythm
  • Visible light enters the body cavities and hits the tissues and cells of the organs – there is so much more to learn about what effects that has on our health!
  • Red light stimulates fibroblast activity and collagen synthesis, and helps in wound healing

Question #3: What is “sensible sun exposure” – can you please elaborate on what you mean by that?

Key Points

  • NEVER BURN- everything in moderation, including the sun
  • Chronic, excessive sun exposure can increase the risk of non-melanoma skin cancers; sunburns can increase the risk of melanoma
  • Dr. Holick typically recommends covering up the sensitive parts of the skin (face, top of the hands, ears) but exposing the larger surfaces of the body (arms and legs), without sunscreen, for a reasonable amount of time to make vitamin D and the other biochemicals resulting from sunshine exposure

Question #4: Is there any evidence that regular, moderate, “sensible” sun exposure causes melanoma?

Key Points

  • There is NO EVIDENCE that regular, moderate, or even occupational sun exposure, increases risk of melanoma
  • A study by Lindqvist et al. actually showed that increased sensible sun exposure decreased the risk of many diseases and lengthened the lifespan

Question #5: How much vitamin D can you make in a sun bathing session and what variables affect the amount made?

Key Points

  • A minimal erythema dose (MED) is the amount of sunshine exposure that leads to a slight pinkness to the skin 24 hours later
  • A healthy adult with whole body exposure to 1 MED makes the equivalent to about 15,000 to 20,000 IU of vitamin D3
  • For hunter-gatherers in Africa who wear minimal clothing and are outside all day, resulting blood levels of 25(OH)D were about 40-50 ng/ml, which for them would require about 4000-6000 IU vitamin D per day to maintain
  • Melanin acts as a natural sunscreen – more sun exposure causes more melanin to be produced (a tan). More melanin means less vitamin D can be made in the same amount of time (Blacks need more than 10 times longer UVB exposure to make the same amount of vitamin D as Whites)
  • Sunscreen should absorb both UVA and UVB radiation – with about 97% absorption with SPF of 30. While this may allow someone to be in the sun 30 times longer, it will block vitamin D production
  • Sunscreen use definitely blocks the ability to make vitamin D in the skin – one study showed that farmers who were out all summer but wearing sunscreen were still vitamin D deficient at the end of summertime

With all these factors that affect how much vitamin D someone is able to make from sun exposure, can everyone make 15,000 to 20,000 IU with one MED dose?

  • Age is also is a factor! Age decreases the amount of the precursor of vitamin D in skin
  • A 70 year old makes 25-30% of the vitamin D3 a 20 year old makes

Question #6: You said that vitamin D3 made by sunlight lasts twice as long in the blood as vitamin D3 ingested by diet or supplements. What does this mean in terms of a dose of vitamin D from sunshine versus supplements?

Key Points

  • When pre vitamin D3 is made in the skin it is converted slowly and released into the bloodstream over a couple hours
  • An oral dose of vitamin D3 is absorbed into gut and goes into blood stream quickly, and is gone within 24 hours (vitamin D3)

Question #7: You also say that you cannot ever get toxic or overdose on vitamin D made from sunshine whereas you can from vitamin D supplements. How and why is that?

Key Points

  • While you can get toxic from vitamin D supplements, it takes a lot over a long period of time. Hundreds of thousands of units of vitamin D daily for months to years…
  • When sunlight makes pre-vitamin D, it can be converted with additional UV exposure into other molecules after a maximum amount of vitamin D3 has been created
  • UV can destroy excess vitamin D3 directly within the external layer of the skin before it has even made it into the bloodstream
  • During the summer, don’t stop taking vitamin D supplements!

Question #8: When you add everything up, the risks, especially from non-burning “sensible” sunlight exposure, are small in comparison to the large benefits received from sun exposure – is this true?

Key Points

  • Studies on lactating mothers have found that human breast milk has very little, if any, vitamin D. But this is only true if the mom isn’t getting enough vitamin D on a daily basis!
  • It makes evolutionary sense that we need sunshine
  • Exposure to sunlight plays a very important role throughout life, from pregnancy through adulthood
  • Vitamin D regulates gene expression, especially in the immune system – it is vital to our health

Question #9: Do you think vitamin D is the most impactful result of sunshine exposure?

Key Points

  • Vitamin D is VITAL, and we know that without it, we get vitamin D deficiency diseases, such as rickets
  • Exposure just to fresh air and sunlight seems to improve health
  • There is much more to sunlight than UVB, however, still see less risk for disease and death with more UVB and vitamin D, such as seen with the Spanish Flu (higher latitude, less vitamin D = worse outcomes)

Question #10: Is it realistic to think you can get enough vitamin D from sunshine alone? Is supplementing with vitamin D necessary?

Key Points

  • It is unrealistic to think you are going to make enough vitamin D from sun exposure alone, all year round
  • Most people in the general population don’t get enough, even in the summertime – one large study showed a difference of only 9 ng/ml in vitamin D levels just after summer (when levels should be highest) and just after winter (when levels are lowest)
  • Vitamin D screening is especially important for individuals at higher risk of vitamin D deficiency, and at certain life-stages (obese, pregnant, on certain medications, etc.)
    • According to Dr. Holick, everyone should be on a vitamin D supplement

Question #11: What is your #1 message to people who may still be hesitant to get into the sun?

Key Points

  • We are designed to be in sunlight
  • Many of the benefits and biological compounds we get from sunshine exposure we can’t get by taking a supplement! These compounds are free just by being exposed to sunlight
  • Stay aware of the factors needed for UVB and vitamin D production; altitude affects UVB availability as well!
  • Sensible Sun Exposure IS GOOD FOR YOU

Question #12: Is there anything else you would like to add about the risks and benefits of sunshine exposure?

Key Points

  • There is no question that UV exposure induces DNA damage, HOWEVER, there is no accumulation of DNA damage with sensible sun exposure due to the DNA repair enzymes which are also increased upon sunshine exposure
  • Sensible, non-burning sunshine exposure results in initial damage followed by increased repair with no long lasting effect…
  • “In my opinion, there is minimal risk for being exposed to sensible sun exposure, but there is a lot of upside in improving your overall health and wellbeing.” ~ Dr. Michael Holick

12 other sunshine blog posts by Grassrootshealth in May 2022


VitaminDWiki pages with HOLICK in the title (48 as of May 2022)

This list is automatically updated

Items found: 55
Title Modified
Dr. Holick interview with transcript - May 2024 05 May, 2024
Podcast by Dr. Holick on vitamin D - Feb 2011 05 May, 2024
Prostate Cancer - interview of Dr. Holick by Baggerly - video and transcript Jan 2024 05 May, 2024
Should You Take A Vitamin D Supplement - Dr Holick transcript Oct 2022 28 Nov, 2023
Vitamin D: 100 year anniversary of discovery – Holick Jan 2023 23 Jan, 2023
Vitamin D and neurocognitive function – Holick April 2014 21 Oct, 2022
Vitamin D and neurocognitive function – Holick Oct 2022 21 Oct, 2022
How Sensible Sun Exposure Benefits Your Health -Holick interview May 2022 30 May, 2022
UV, sunshine, and vitamin D (87 charts) - Holick March 2013 11 Jan, 2022
Vitamin D and COVID-19: a narrative review - Holick - Jan 4, 2022 10 Jan, 2022
Low Vitamin D in infants - video interview of Dr. Holick - May 2017 11 Dec, 2021
Hospital has banned Dr. Holick due to testifying in cases of infants with broken bones- August, 2021 03 Aug, 2021
Vitamin D Is Not as Toxic as Was Once Thought – Holick May 2015 20 Mar, 2021
Vitamin D, Zinc, etc. look promising for COVID-19 (Holick) - Jan 25, 2021 28 Jan, 2021
A call to action: Vitamin D for hip fracture (50,000 weekly for 8 weeks, then bi-weekly – Holick July 2020 11 Dec, 2020
Rate of COVID-19 test positive is 40 pcnt lower if high vitamin D (192,000 people) - Holick Sept 2020 17 Sep, 2020
Immunologic Effects of Vitamin D on Human Health and Disease - Holick July 2020 15 Jul, 2020
The vitamin D deficiency pandemic – Holick May 2017 21 Jan, 2020
Call to action – more Vitamin D for pregnancies, loading doses are OK – Holick Aug 2019 25 Jun, 2019
Diagnosis and treatment of osteopenia – Holick 2010 10 Dec, 2018
Photobiology of Vitamin D – free chapter in book – Holick 2010 17 Nov, 2018
Kaiser Health News wrote a damning article about Dr. Holick and Vitamin D, NYT published it – Aug 2018 20 Aug, 2018
Vitamin D - at least 4,000 IU to achieve 40-60 ng and reduce risk of early death – Holick June 2018 04 Jun, 2018
Role of Vitamin D in the Pathogenesis of Diabetes – Holick July 2017 16 Jul, 2017
The risks and benefits of sun exposure – Holick Oct 2016 05 Jan, 2017
Vitamin D presentation by Dr. Holick Spring 2012 08 Mar, 2016
Holick interview by Mercola on Vitamin D – Dec 2015 17 Jan, 2016
Major review of Vitamin D – Holick Feb 2013 27 Dec, 2015
Vitamin D Global Perspective - Holick June 2013 27 Dec, 2015
Dr. Holick video on vitamin D - March 2013 27 Dec, 2015
Vitamin D from 1940 and into the future – Holick video Nov 2013 28 Nov, 2015
Vitamin D review – Holick Jan 2013 24 Sep, 2015
Go ahead, soak up some sun (but don’t burn) – Holick July 2015 01 Aug, 2015
Chicago Sun Times on vitamin D: Depression, chest pain, fibromyalgia, Holick, 3000 IU without test - May 2010 15 Jul, 2015
Chicago Times on vitamin D: Depression, chest pain, fibromyalgia, Holick, 3000 IU without test - May 2010 15 Jul, 2015
Live Longer with Vitamin D - Holick March 2015 17 May, 2015
Sunlight and Your Health: An EnLIGHTening Perspective - Holick Video Dec 2014 14 Mar, 2015
Less sun means more disease -Grant, Holick, Cannell, et al Feb 2015 05 Mar, 2015
Cancer, Sunlight, and Vitamin D - Holick Oct 2014 06 Oct, 2014
Environmental factors that influence the cutaneous production of vitamin D – Holick 1995 06 Jan, 2014
If You're Low in This Nutrient, It Doubles Your Odds of Many Cancers– Interview Dr. Holick Oct 2013 23 Dec, 2013
Patent application for a skin cream which enhances production of vitamin D – Holick July 2013 24 Nov, 2013
Vitamin D update – Holick Sept 2013 11 Nov, 2013
Vitamin D, Sunlight and Cancer Connection – Holick Jan 2013 11 Aug, 2013
Vitamin D encyc. - 2nd edition, Holick - April 2013 02 Mar, 2013
Major review of Vitamin D – Holick 2013 part II 08 Feb, 2013
Vitamin D: A D-Lightful Vitamin for Health – Holick Dec 2012 07 Jan, 2013
Evidence for vitamin D – Holick June 2012 23 Nov, 2012
VITAMIN D: A D-LIGHTFUL SOLUTION FOR GOOD HEALTH – Holick 2012 30 Oct, 2012
Michael Holick – reduce health care costs 25 percent – interview Sept 2010 07 Oct, 2012
High Prevalence of Vitamin D Inadequacy - Holick Mayo Clinic 2006 14 May, 2012
Professional book on Vitamin D - Editor Holick 2010 27 Aug, 2011
Vitamin D Holick – Jan 2011 29 Mar, 2011
Vitamin D is essential to the modern indoor lifestyle – interview Holick Oct 2010 09 Oct, 2010
Interview of pioneer in Vitamin D research - Holick LEF Sept 2010 08 Sep, 2010

VitaminDWiki - Noontime sun and D category contains

Noontime sun and D has 326 items

see also
No – 10 minutes per day of sun-UVB is NOT enough
Vitamin D Myths - SUN
Optimize vitamin D from the sun
Overview Suntan, melanoma and vitamin D
Overview UV and vitamin D
50 ng of Vitamin D - 100 hours of noon sunbathing OR 3 dollars of Vit D
3.3 X more likely to be Vitamin D deficient if wear long-sleeves – Oct 2022
Sun and UV
Avoiding the sun may be as bad as smoking - many studies
Vitamin D from the sun without the heat (silver-coated plexiglass)
Opinion: sun better than UV better than vitamin D
Fewer cognitive problems if more sun or Vitamin D
Which Is Worse - Avoiding Sunlight or Vitamin D Deficiency – April 2019
Have We Gotten Sunscreen Totally Wrong - Jan 2019
People who get little noon-day sun must supplement with Vitamin D – systematic review June 2017
The Greatest Public Health Mistake of the 20th Century (sunscreen block Vitamin D) - 2017
Does Less Sun mean More Disease 5 minute video
340,000 US deaths annually due to insufficient sun (some due to low vitamin D) – July 2020
Health benefit of Sunlight is more than Vitamin D in the blood - many studies
5 Amazing Properties of Sunlight You've Never Heard About
Vitamin D and Sun conference – Germany June 2017


VitaminDWiki pages with SUN in the title (196 as of May 2022)

This list is automatically updated

Items found: 205
Title Modified
Dermatology's Disastrous War Against The Sun - April 2024 22 Apr, 2024
Seniors get about 4X less vitamin D from the sun or UVB 19 Apr, 2024
Air pollution decreases the amount of vitamin D from the sun (Mendelian analysis this time) – May 2024 17 Apr, 2024
Challenges in Sun Protection - 233 dollar book - Oct 2021 15 Mar, 2024
Avoiding the Sun is Just as Dangerous as Cigarettes - video March 2024 10 Mar, 2024
Lack of Vitamin D due to lack of Sun, global perspective - Grant Jan 2024 10 Jan, 2024
Risk of Parkinson’s decreases with time in summer sun - Jan 2024 05 Jan, 2024
Less vitamin D from the sun if it is too hot to be outside (now noticed in China) - March 2023 21 Dec, 2023
Canadians have a hard time getting 1,000 IU of vitamin D from the sun – July 2015 30 Sep, 2023
Does Less Sun mean More Disease 15 Jul, 2023
No – 10 minutes per day of sun-UVB is NOT enough 12 Jul, 2023
23 Cancers if little sun, 12 of which have been associated with low vitamin D – March 2022 02 Jul, 2023
Avoiding the sun may be as bad as smoking - many studies 24 Apr, 2023
Vitamin D from the sun reduces the risk of internal cancers, but increases some skin cancers – Nov 2021 05 Feb, 2023
The Risk of Skin Cancer From Sun Exposure Is Overblown - May 2019 05 Feb, 2023
Happiest country on earth has a high Vitamin D level (Finland, with little sun) – March 2022 27 Nov, 2022
Half a billion people live with little vitamin D from the sun – Dec 2016 11 Nov, 2022
Nitric oxide (from sun, Mg, Vit D, etc) reduces some health problems - many studies. 21 Oct, 2022
The Sun is the best remedy for Your Lungs (Infection, Asthma and COPD) - video June 2022 27 Jun, 2022
Some women who want whiter skin avoid the sun – increasing the risk of colon cancer in this case. – June 2022 25 Jun, 2022
Does less sun mean more Myopia - June 2022 23 Jun, 2022
Noontime sun and D 19 Jun, 2022
How Sensible Sun Exposure Benefits Your Health -Holick interview May 2022 30 May, 2022
340,000 US deaths annually due to insufficient sun (some due to low vitamin D) – July 2020 21 May, 2022
Nitric oxide (from Sun, UVA, Vitamin D) reduces cardiovascular problems 30 Apr, 2022
Sun is better than UV, which is better than Vitamin D 28 Mar, 2022
IBD in children might be associated with low sun exposure 28 Feb, 2022
Mutiple Sclerosis half as likely in children spending 30 to 60 minutes per day in the sun – Dec 2021 11 Dec, 2021
Need 1 hour of noon sun to get Hijab women to 20 ng of Vitamin D (cloth) – June 2019 10 Dec, 2021
UK COVID-19 increased in early October (too much James Bond or too little sun) – Oct 11, 2021 12 Oct, 2021
Multiple Sclerosis risk increased if both Epstein-Bar Virus and low sun (vitamin D) – Aug 2021 26 Aug, 2021
More than 1 hour of daily sun improved influenza vaccine by 35 percent (Vitamin D helps again) – Oct 2019 28 Jul, 2021
Infants need more sun than 17 minutes per week on 6 percent of skin – Dec 2016 20 Jun, 2021
Vitamin D levels increased in Saudi Arabia over a decade (more sun or supplements) – Sept 2021 07 Jun, 2021
Is Vitamin D’s “Moment in the Sun” Behind Us (nope) – Jan 2014 27 Mar, 2021
Vitamin D vs angle of the sun 18 Mar, 2021
Somewhat less Type 1 Diabetes in Wales recently – perhaps more sun or more vitamin D – March 2021 13 Mar, 2021
Less sun (less vitamin D), 1.4 X higher risk of hypertension – Feb 2021 23 Feb, 2021
War increases risks of COVID-19 (social distance, mask, less sun, poor food, stress) - Jan 2021 19 Jan, 2021
Vitamin D from the sun without the heat (silver-coated plexiglass) 11 Jan, 2021
Perhaps you get more health from the sun at 8 AM than noon 13 Aug, 2020
Polish children need 45 minutes of noon sun to get 800 IU of Vitamin D – July 2020 24 May, 2020
Poor sleep related to low vitamin D and little sun – March 2020 08 Mar, 2020
Lack of sun has caused multiple vitamin deficiencies, poor health and poor sleep - Gorminak Feb 2020 13 Feb, 2020
Breast Cancer risk reduced 17 percent by 1 hour of daily summer sun – meta-analysis Jan 2020 07 Jan, 2020
Sun reduces risk of Multiple Sclerosis via both Vitamin D and another way – Dec 2019 30 Dec, 2019
Women wearing hijab in tropics need at least 1 hour noon sun daily in summer – June 2019 03 Oct, 2019
Thyroid Cancer 1.9 X more likely if poor gene to generate Vitamin D from the sun (DHCR7) – July 2019 31 Jul, 2019
Little sun in first trimester, 2.9 X more likely to have learning disabilities – June 2019 29 Jun, 2019
Less sun, more back pain (low vitamin D) – Sept 2018 29 Jun, 2019
Vitamin D Myths - SUN 25 May, 2019
Increase your vitamin D from the sun by wearing a tan-through instead of standard shirt 20 May, 2019
Fewer cognitive problems if more sun or Vitamin D 15 May, 2019
1,000 IU of vitamin D from the sun not available in the winter (Switzerland too) – April 2019 13 May, 2019
Risk of childhood myopia decreased if spend more time in the sun (or supplement vitamin D) – March 2019 07 May, 2019
The sun appears to generate Co-Q10 in our bodies when we eat our greens – Greger April 2016 02 May, 2019
Vitamin D from sun - minutes for 1000 IU (wrong in many ways) – April 2019 20 Apr, 2019
25 minutes of daily sun provided less than half of the response as 500 IU of vitamin D (Korea) – RCT March 2019 26 Mar, 2019
Vitamin D generated by the sun is associated with pigmentation genes, not skin color – Jan 2019 24 Mar, 2019
Sun avoidance increases risk of death by 2X – April 2014 07 Mar, 2019
Nature deficiency leads to disease (less sun, less Vitamin d) – Feb 2019 20 Feb, 2019
Infant higher Vitamin D if mom took sun, took Vit D, was not obese, or ate eggs (China) – Feb 2019 12 Feb, 2019
Get enough Vitamin D from UK winter sun (if white skin and believe that 10 ng is enough) - Aug 2018 02 Feb, 2019
Parkinson’s patients 50X less likely to get even a little sun– meta-analysis Jan 2019 29 Jan, 2019
Food allergy is linked to season of birth, sun exposure, and vitamin D deficiency – Jan 2019 24 Jan, 2019
Dermatologists use sun block, stay indoors, and have low vitamin D (Thai in this study) – Dec 2018 29 Dec, 2018
Alzheimer’s associated with low sun and low vitamin D – Sept 2018 18 Sep, 2018
Vitamin D from safe sun: only 500 IU in 10 minutes when include windchill – Jan 2018 03 Sep, 2018
9 minutes of full noon sun daily is all you need (if have white skin and believe that 10 ng is enough) – Aug 2018 21 Aug, 2018
Esophageal Cancer 40 percent less likely in parts of UK with more sun (vitamin D) – Feb 2018 01 Aug, 2018
Embrace the Sun – benefits of the sun throughout the day and year – book June 2018 22 Jun, 2018
Alzheimer’s increase due to less sun or more meat 22 Apr, 2018
1400 IU of Vitamin D from Summer noonday German sun from a 10 minute walk – Feb 2018 16 Feb, 2018
Skin directly benefits from the sun – no liver, kidney needed to create Vitamin D – Jan 2018 08 Jan, 2018
Vitamin D deficiency 4X more likely in Italian teens if: dark skin, winter, obese, little sun, or use sunscreen – June 2014 30 Dec, 2017
Vitamin D content of pork increased 3X with about 10 hours of noonday sun – Nov 2017 15 Nov, 2017
The sun provides more health benefit than vitamin D – Dr. Lucas podcast – May 2015 31 Oct, 2017
Hypothesis – Australia has highest rate of food allergy due to avoiding the sun – Sept 2015 07 Aug, 2017
Sun and UV 18 Jul, 2017
Vitamin D consensus: 400 IU for infants, less than 10 ng is too low, if low sun need to supplement – April 2017 12 Jul, 2017
People who get little noon-day sun must supplement with Vitamin D – systematic review June 2017 23 Jun, 2017
Optimize vitamin D from the sun 12 Jun, 2017
Avoiding the sun reduces lifespan by 2 years (smoking reduces lifespan by 10 years) – March 2016 09 Jun, 2017
Time in sun (in Spain) to get 4,000 IU of vitamin D: half hour in July , 2 hours in October – Sept 2016 08 Jun, 2017
Vitamin D and Sun conference – Germany June 2017 28 May, 2017
Perhaps not burn from the sun if have enough vitamin D 13 Apr, 2017
Kidney transplant patients advised to avoid the sun, then 90% have very low vitamin D levels – Sept 2012 25 Mar, 2017
More sun when young, less myopia when old – Jan 2017 06 Mar, 2017
Get your vitamin D from the sun – a single cartoon image 02 Mar, 2017
The risks and benefits of sun exposure – Holick Oct 2016 05 Jan, 2017
Regular sun exposure benefits health – Dec 2016 25 Dec, 2016
The Healing Sun –1999 book highlights at VitaminDWiki 19 Dec, 2016
Parkinson’s disease 2 times less likely if get 2 hours of daily sun – Nov 2016 10 Nov, 2016
Less sun (less vitamin D) more anaphylaxis (severe allergic reaction) – June 2014 17 Jun, 2016
People in Louisiana may be avoiding the hot sun like those in Middle East – May 2012 24 Apr, 2016
Multiple Sclerosis - low vitamin D, low sun, smoking are the largest modifiable factors – April 2016 09 Apr, 2016
Professional soccer players in region with very hot sun – 89 percent low vitamin D – March 2016 26 Mar, 2016
Photosensitivity (sun allergy) and vitamin D 26 Jan, 2016
Allergic to the sun (Polymorphic light eruption) – you may need UVB or vitamin D 26 Jan, 2016
Vitamin D from the sun during Northern winters – contrary to current belief – April 2015 19 Dec, 2015
Skin Cancer (SCC) minimized if get sun time around noon – Nov 2015 09 Nov, 2015
Vitamin D from sun barely increased when lower half of body was also exposed – Jan 2015 07 Oct, 2015
Sun is needed, but as with ice cream, getting too much can cause problems – Aug 2015 17 Aug, 2015
Benefits of sun are more than vitamin D – 2008 11 Aug, 2015
Opinion: sun better than UV better than vitamin D 11 Aug, 2015
Go ahead, soak up some sun (but don’t burn) – Holick July 2015 01 Aug, 2015
5X fewer hip fractures from Parkinson – Alzheimer – Stroke with enough sun – June 2011 17 Jul, 2015
Chicago Sun Times on vitamin D: Depression, chest pain, fibromyalgia, Holick, 3000 IU without test - May 2010 15 Jul, 2015
Overly restrictive sun exposure warnings pose health risk - July 2015 14 Jul, 2015
Even cows need more than 90 minutes in the sun each day – Feb 2012 21 Jun, 2015
Children’s picture book on importance of sun and vitamin D – July 2015 08 May, 2015
Avoiding the sun (and vitamin D) – most Chinese medical students do not want darker skins – Feb 2015 30 Apr, 2015
Studying more results in less sun ,which results in less vitamin D – Jan 2015 30 Apr, 2015
Sun exposure reduces Myopia – June 2011 19 Apr, 2015
Skin damaged by sun helped by vitamin D supplementation - pilot study April 2015 03 Apr, 2015
People with health problems lacking noon sun (severe Multiple Sclerosis, etc.) have even lower levels of vitamin D – March 2015 15 Mar, 2015
Less sun means more disease -Grant, Holick, Cannell, et al Feb 2015 05 Mar, 2015
Medical students in Pakistan – 1 in 3 aware than sun creates Vitamin D, 1 in 12 get noon sun – Jan 2015 01 Mar, 2015
Less sun means more disease – Feb 2015 28 Feb, 2015
Vitamin D from sun is NOT proportional to how much skin is exposed, face and hands best – Jan 2015 14 Jan, 2015
Vitamin D from the sun or as a supplement is not a hormone 06 Jan, 2015
Increased sun and vitamin D both reduced MS risk – March 2011 03 Jan, 2015
Want to get vitamin D from the sun - there are many apps for that 19 Dec, 2014
How many minutes of sun do I need – age, skin color, UV index – Nov 2014 26 Nov, 2014
Vitamin D from the sun while minimizing skin cancer - Interview by Dr. Mercolla of Dr. Cannell - Nov 2014 17 Nov, 2014
Disadvantaged get less sun and have poor health in the North– Aug 2011 09 Nov, 2014
Only takes 10 minutes of sun to make a month’s worth of vitamin D while wearing the Hijab (NOT) Oct 2014 07 Oct, 2014
Less recent sun, more suicide (similar title to our short video: less sun, more disease) – Sept 2014 24 Sep, 2014
Survey of attitudes of Outdoor workers about sun protection – New Zealand Feb 2013 18 Sep, 2014
Vitamin D levels do not vary much with minutes in the sun 10 Sep, 2014
More than an hour of daily sun associated with 30 percent less ERplus Breast Cancer – Feb 2014 10 Aug, 2014
Sun holidays are an important, but expensive, source of vitamin D in Sweden - Sept 2013 10 Jul, 2014
UV spectra of the sun and sunscreens 24 Jun, 2014
I think you might dispense with half your doctors if you would only consult Dr. Sun more - 1870 11 Jun, 2014
Hypothesis: Sun provides more than vitamin D – June 2012 05 Jun, 2014
Sun vacations raise vitamin D levels, but too much sun per day caused DNA skin damage – May 2014 02 Jun, 2014
Vitamin D research leads to surprising health tip – Australians need more time in the sun – May 2014 31 May, 2014
Some vitamin D remains in the skin to protect skin from the sun – March 2014 26 Mar, 2014
Excessive sun increases cancer all around the body – July 2011 16 Mar, 2014
Vitamin D Review by Dermatologists – you really really need it, but avoid the sun – Jan 2014 22 Jan, 2014
Sun-cured hay often has 2000 IU of vitamin D per kilogram 08 Jan, 2014
Two minutes sun is all you need for vitamin D (not) - Dec 2013 04 Dec, 2013
Melanoma is 44 percent LESS LIKELY if get sun on the job – Nov 2013 01 Dec, 2013
Skin cancer risk and vitamin D from sun both decrease with darker skin – March 2013 10 Nov, 2013
3 instead of 11 fractures with Parkinson disease when have enough sun - Nov 2010 05 Nov, 2013
World Osteoporosis Day sponsored by Big Pharma – does not give good sun or vitamin D info Oct 20 2013 21 Oct, 2013
Vitamin D in the ICU: anything new under the sun - Dec 2012 06 Oct, 2013
Equation of IU vs time in the sun - Jan 2012 14 Jul, 2013
Seniors getting noon sun had 88 percent chance of having at least 30 ng of vitamin D – Dec 2012 08 Jul, 2013
80 percent of vitamin D from sun rather than from food – Nov 2010 03 Jul, 2013
Most young Americans not getting even 600 IU of vitamin D from the sun – FDA Aug 2011 29 Jun, 2013
Dark Skinned adults need more than 45 minutes of UK summer sun daily – June 2013 21 May, 2013
South Asians in UK get little vitamin D from 45 minutes of daily summer sun – RCT April 2013 26 Apr, 2013
Fewest Google searches for Mental Health when there is lots of vitamin D from the sun – May 2013 18 Apr, 2013
Get vitamin D from sun in summer, from supplements in winter – Tasmania March 2013 14 Apr, 2013
Small Australian focus group on getting Vitamin D from the sun – March 2013 14 Apr, 2013
Expert Review by Dermatologists: get more vitamin D but avoid the sun – Dec 2012 05 Apr, 2013
Multiple sclerosis associated with sun, not low vitamin D – Feb 2013 01 Apr, 2013
Tiger got surgery for hip arthritis – not much sun in the cage – March 2013 23 Mar, 2013
How vitamin D protects the skin from the sun and from aging – Dec 2012 08 Mar, 2013
Vitamin D from phototherapy lamps, tanning beds, and the sun – Jan 2012 06 Mar, 2013
US Minorities have poor health – how much is due to little sun – Feb 2013 02 Mar, 2013
Sun and Vitamin D 18 Feb, 2013
Study of vitamin D level vs hours in the sun, etc. – Feb 2013 12 Feb, 2013
Vitamin D: Is It the Best Thing Under the Sun - Medscape Feb 2013 08 Feb, 2013
Vitamin D from the sun 3 to 12 months of the year in the US 28 Jan, 2013
The sun appears better at reducing incidence of some cancers than vitamin D – Dec 2012 17 Dec, 2012
the 'Panacea' of the sun - Vitamin D Oct 2012 30 Oct, 2012
10 Reasons Why Sun Is Good for Our Health – 2007 30 Oct, 2012
Hours of sun per week decreased probability of NH lymphoma by 32 percent – April 2012 26 Oct, 2012
Wear glasses when getting vitamin D from the sun – June 2011 17 Oct, 2012
Survey finds that Non-Caucasians do not feel that people need sun exposure – July 2012 17 Oct, 2012
Sun exposure is associated with increased survival from melanoma – 2005 07 Oct, 2012
Decreased mortality with sun and or altitude 29 Sep, 2012
2X less vitamin D from the sun for seniors - Dec 2011 28 Sep, 2012
Let the Sun shine on you - Gillie Aug 2011 26 Sep, 2012
3X more vitamin D from the sun if take MS drug Interferon-β – July 2012 16 Aug, 2012
Modelling Vitamin D from the sun in Poland – 2011 15 Aug, 2012
Depression in UAE peaks in the summer – probably due to sun avoidance – Feb 2011 27 Jul, 2012
400 iu of vitamin D is like 24 seconds of sun in a swimsuit in Los Angeles 27 Jun, 2012
Sun exposure protects children from asthma – May 2011 25 Jun, 2012
Most Australian GPs still believe the myth than 10 minutes of sun a day is enough – June 2011 23 Jun, 2012
Births during times of little sun associated with increased hypertension – April 2011 23 Jun, 2012
Doctor survey: 64 pct feel 10 minutes of sun is enough, 33 pct say use sunscreen winter – May 2012 08 Apr, 2012
Scared Out of the Sun for Fifty Years – Jan 2011 01 Feb, 2012
Even young Caucasians do not get enough time in the sun – Oct 2011 21 Jan, 2012
Avoid the hot sun and thus vitamin D in the Middle East – Oct 2011 20 Jan, 2012
Minutes in the Sun for 1000 IU 11 Sep, 2011
Hypothesis – you will get the most vitamin D from sun if you do not tan 15 Aug, 2011
Decreased winter sun speeded up subsequent MS development 2X – VA Aug 2011 09 Aug, 2011
In Defence of the Sun – reduce 400000 premature deaths – 2009 13 Jul, 2011
Low Vitamin D in Malay women –less time in sun –sun screen -obesity – May 2011 09 Jun, 2011
9 minutes a day of sun improved BMD Parkinsons disease patients – Jan 2011 01 Jun, 2011
If avoiding sun for medical reasons you need oral vitamin D – April 2011 04 May, 2011
Lack of sun and lack of vitamin D are both MS risk factors – Feb 2011 30 Mar, 2011
Little reduction in breast cancer for additional vitamin D or sun – March 2011 29 Mar, 2011
AAP Issues Guidelines on Limiting Sun Exposure in Children – Feb 2011 28 Feb, 2011
The Sun Will Save Your Life – PDF 2010 30 Dec, 2010
Less cancer if had more physical activity – perhaps due to the sun – Sept 2010 18 Sep, 2010
Actress avoided the sun to protect skin is now vitamin D deficient - Sept 2010 15 Sep, 2010
We lack enzyme to deal with severe sun damage – July 2010 28 Jul, 2010
Effective Treatment for Multiple Sclerosis is Completely Free with the sun 22 Jul, 2010
People who avoid the sun for a medical reason were not vit D deficient – May 2010 25 May, 2010
Vitamin D levels of Iranians with MS is lowest in summer (avoid the hot sun) – Aug 2019 No value for 'modification_date_major'
More Cancer if less sun – model adding climate helps (need additional factors) – Nov 2019 No value for 'modification_date_major'

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