Grassroots Health Oct 2015 email
“A general rule of thumb?
When you are taller than your shadow, your body is able to make vitamin D”
Atmospheric sun protection factor on clear days: its observed dependence on solar zenith angle and its relevance to the shadow rule for sun protection 1992
The shadow rule: a simple method for sun protection. 1998
“Thus, when a person's shadow is shorter than the person is tall, the intensity of UVR from the sun is more likely to cause sunburn.”
Actually: Generate about 1/2 as much vitamin D when shadow is as long as you are tall
Also - Less shadow ==> less Vitamin D
See also Vitamin D Life
No – 10 minutes per day of sun-UVB is NOT enough
Optimize vitamin D from the sun
5 Amazing Properties of Sunlight You've Never Heard About
Overview Suntans melanoma and vitamin D
Overview UV and vitamin D
Vitamin D vs angle of the sun
The TOP articles in Noon sun and D are listed here:
- Health benefit of Sunlight is more than Vitamin D in the blood - many studies
- Little sun in first trimester, 2.9 X more likely to have learning disabilities – June 2019
- Vitamin D Myths - SUN
- Which Is Worse - Avoiding Sunlight or Vitamin D Deficiency – April 2019
- Vitamin D produced by hands and face is 8X more than elsewhere – Feb 2018
- Embrace the Sun – benefits of the sun throughout the day and year – book June 2018
- 1400 IU of Vitamin D from Summer noonday German sun from a 10 minute walk – Feb 2018
- People who get little noon-day sun must supplement with Vitamin D – systematic review June 2017
- Vitamin D from the sun during Northern winters – contrary to current belief – April 2015
- Getting Vitamin D into your body
- Sun holidays are an important, but expensive, source of vitamin D in Sweden - Sept 2013
- A wrist-watch which measures UVA plus UVB - should NOT be used to increase vitamin D - June 2014
- 20 cent vitamin D pill similar to 2 hours sunbathing at 60 degree latitude – RCT Aug 2013
- Two minutes sun is all you need for vitamin D (not) - Dec 2013
- Melanoma is 44 percent LESS LIKELY if get sun on the job – Nov 2013
- UV, sunshine, and vitamin D (87 charts) - Holick March 2013
- Walking an hour a day (more vitamin D) decreased chance of breast cancer by 14 percent – Oct 2013
- Fewer heart attacks, hip fractures and deaths if more skin cancer – Sept 2013
- Suncation adds 12 ng of vitamin D to Sweden women – Sept 2013
- Why do gardeners live longer (vitamin D, etc.)
- Allergic to the sun (Polymorphic light eruption) – you may need UVB or vitamin D
- More Cancer, less Solar Radiation - 1941
- 60 minutes of sunlight needed to decrease vitamin D deficiency in sunny climate – Dec 2012
- Expert Review by Dermatologists: get more vitamin D but avoid the sun – Dec 2012
- Hypothesis: Sun-produced nitric oxide reduces cardiovascular problems
- 5 Amazing Properties of Sunlight You've Never Heard About
- Contributions of Sunlight and Diet to Vitamin D Status - Sept 2012
- Business opportunity: you can now make stuff which only passes vitamin D wavelength
- Do You need a Suncation or just vitamin D - Nov 2012
- Vitamin D protects DNA against UV skin damage – 5 studies 2012-2013
- New Zealand doctors are starting to prescribe more sunshine – Aug 2012
- Vitamin D from the sun without the heat (silver-coated plexiglass)
- 3X more vitamin D from the sun if take MS drug Interferon-β – July 2012
- Ways to block UVA but not the UVB which makes vitamin D
- Vitamin D from phototherapy lamps, tanning beds, and the sun – Jan 2012
- Survey finds that Non-Caucasians do not feel that people need sun exposure – July 2012
- Hypothesis: Sun provides more than vitamin D – June 2012
- 400 iu of vitamin D is like 24 seconds of sun in a swimsuit in Los Angeles
- Whites were 2X more likely to be vitamin D deficient if wear long sleeves – Jan 2012
- Sunlight for babies – US Govt 1933