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Getting a tan does not mean that you are getting vitamin D

When the sun is low in the sky (not summer, early in the day, late in the day) there is significantly more UVA than UVB

Under those conditions you can tan but get very little vitamin D
Note: Example: UVA >> UVB when you are standing (cylinder) and the solar zenith angle is say 30 degrees (close to the horizon)

From Sun and Sun Beds: Inducers of Vitamin D and Skin Cancer- 2009 file from ANTICANCER RESEARCH: 2009

See also Vitamin D Life

Overview Suntans melanoma and vitamin D has the following chart

Very little of the tanning bulb intensity actually generates vitamin D

Getting a tan does not mean that you are getting vitamin D

5698 visitors, last modified 25 May, 2016,

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Links to this page
- A wrist-watch which measures UVA plus UVB - should NOT be used to increase vitamin D - June 2014 Getting Vitamin D into your body Vitamin D from the sun while minimizing skin cancer - Interview by Dr. Mercolla of Dr. Cannell - Nov 2014

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