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, includes 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
  ~hs~~hs~AND not obese
  ~hs~~hs~~hs~~hs~ AND have light skin
  ~hs~~hs~~hs~~hs~~hs~~hs~AND it is summer
  ~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~AND it is the middle of the day
  ~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~AND you have lots of skin exposed to the sun
  ~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~AND you are lying down
  ~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~~hs~AND you are not wearing sunscreen.