Time in the Sun: How Much Is Needed for Vitamin D?

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cooliolio

sarah hanrahan of IL 2:37PM May 20, 2012

Obviously EXPOSURE to sun light with clothes on is of almost no help in geting Vitamin D-- because it needs a reaction to occur at the skin and one would not like to keep facing the sun in daytime.

mohan K muju of VA 9:35AM February 01, 2012

Does having Type II diabetes increase the need for prolonged in-the-sun time for the activation of vitaminD production?

beau10 of FL 12:49PM December 14, 2011

Will I get sun damage, even though I wear sunscreen, from UVA rays coming through the windshield?

mick of CA 10:50PM August 04, 2011

That is quite false! I have burnt many many times through a car window with and without sun screen. I always have one arm on my body that is more burnt and the freckles darker because of the car!

Debbie of ID 8:24PM July 04, 2011

I recently read from a book I have that was published in 1999 that after a suntan is established,vitamin D production through the skin stops. Is this true?

Claudia of CT 7:29AM June 27, 2011

I would like to know when it would be best in middle eastern countries to get maximum dose of Uv-B ? And also what about the seasonal variation?

shanti 11:52PM June 14, 2011

I bet a lot of problems, sleep "disorders" in particular, can be traced to not enough sunlightexaccerbated by too much late night screen time.

captain of TX 5:57PM May 29, 2011

The proof is in my hands! My ancient looking (very fair skinned) hands became that way from driving in the car without sunblock on them. You most certainly can burn through the closed windows.
In addition, my left arm has more accumulated sun damage over the years as well as many more freckles (and now age spots). What's more, in my younger years before I wore sunblock, my left arm would always be sunburned (red) after longer car rides.
Just wanted to clear that up. My whole family agrees as we all have sun damage from the car - particularily our hands and forearms. Fair skin doesn't take long or much to burn it.

Marie of FL 3:28PM April 20, 2011

Dear I am 46 year old having wheatish skin and living at latitude of 24 degree North.Sir I want to know how much IUs of vitamin D I can senthesize in a mid sun exposure (around 40% exposed body i,e wearing shorts and covering face) of say half an hour?
regards

dilawar 3:24AM April 18, 2011