Perhaps you get more health from the sun at 8 AM than noon

The most vitamin D is generated when UVB is most intense
  This assumption may be incorrect

Hypothesis: 8 AM is better than noon is based on

• 1) The Healing Sun –1999 book highlights at Vitamin D Life
  Sunbathe for TB only 6-9 AM – not in middle of the day when sun was too hot – pg , 119
• 2) UVB produced 8X more vitamin D as solar UV – July 2012
    It appears that UVA decreases the vitamin D generated by the UVB
• 3) UVA from some tanning beds and most windows decrease vitamin D blood levels – March 2012
• 4) Perhaps the decrease of UVA in the morning results in more Vitamin D being generated
    Even though there is less UVB in the morning than at noon

Some implications if this hypothesis is correct:

1. Getting sun before starting work is more important than noon-day sun
2. Can get good vitamin D without getting hot (note: people in Singapore get early morning sun)
3. Should use narrow-band UVB bulbs instead of 95% UVA, 5% UVB bulbs
4. Should maybe use a filter which reduces the UVA which you get
5. Should not not have lots of windows - which totally block the good UVB, but pass the bad UVA

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See also Vitamin D Life

• Health benefit of Sunlight is more than Vitamin D in the blood - many studies

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