First publication Vitamin D Wiki has seen on the subject

CLICK HERE for PDF

Published by Chief Health Officer Victoria Australia – May 2010

This publication is a good first start, including many good points

Hopefully future versions of papers like this one will point out that:

• Differences between UVA (suntan) and UVB (make vitamin D)

• UVB is about 3X less in shade, and UVA is reduced even more

• Windows do not transmit any UVB to generate vitamin D

  • And that it may be that the UVA transmitted by windows uses up some of the vitamin D

• UVB lighting is possible from special lamps inside of offices (truly full spectrum)

• UVB reflects poorly from buildings – so not as much vitamin D at the bottom of an urban canyon

• There is less UVB in large cities due to pollution/ozone

See also VitaminDWiki

• Overview UV and vitamin D

• UV produces more than vitamin D – Aug 2011

• UV - not too little and not too much

• UVA through window glass decreases vitamin D

• Overview Skin and vitamin D

• Ways to increase the amount of vitamin D you get from UV or the sun: suntan oil, reflectors

• Do UVA and UVB affect the body in different ways Yes: UVA tan, UVB ==> Vitamin D

• When your shadow is as long as you are, you get about 50% of UVB

• No – 10 minutes per day of sun-UVB is NOT enough which includes the following

  • WRONG most of the time
  • 5-10 minutes is enough IF you are near the equator
  • AND young
  •     AND not obese
  •         AND have light skin
  •             AND it is summer
  •                 AND it is the middle of the day
  •                     AND you have lots of skin exposed to the sun
  •                         AND you are lying down
  •                             AND you are not wearing sunscreen.