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2X less vitamin D from the sun for seniors - Dec 2011

From Solar UV Doses of Adult Americans and Vitamin D3 Production – Dec 2011


Figure 1. The percent drop in the ability to make vitamin D3 in human skin with age.
see wikipage: http://www.vitamindwiki.com/tiki-index.php?page_id=2968
We normalized values to 100% using the children's values (0-20 yr).
The data plotted is the average of vitamin D3 formed in the epidermis and dermis from 0-20 yr (100%), 22-40 yr (83%), 41-59 yr (66%) and 60+ yr (49%); calculated from the data in Figure 1 of MacLaughlin and Holick (1985).
Note that some seniors over 70 yr make less than 25% of the vitamin D that children <21 yr can make.67 {In VitaminDWiki}
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The above graph was taken from 1985 publication

Image

for skin type III
Wonder if there was any difference with cholesterol in the skin, which is a precursor of vitamin D
see: Overview of Cholesterol and Vitamin D

Publication PDF is attached at the bottom of this page
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See also VitaminDWiki

See also web

 see webpage http://www.is.gd/timeinsun

Attached files

ID Name Comment Uploaded Size Downloads
1426 Vitamin D from skin vs age - 1985.jpg admin 30 Jun, 2012 16:18 15.26 Kb 1142
1425 Aging decreases the capacity of human skin to produce vitamin D3 - 1985.pdf PDF admin 30 Jun, 2012 16:17 564.14 Kb 1023
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