The sunshine vitamin is made from cholesterol in your skin when it’s exposed to the sun. How vitamin D gets into your body from the sun For example, when exposed to the same amount of UVB radiation, a person who is 70 years old will make 75 percent less D3 than a 20-year-old. As we get older, it naturally becomes more difficult to convert sunlight into D3. Although one needs to be cautious of overdoing sun exposure (given the well known risks), many people are seemingly petrified of the sun these days….Kids don’t “play outside” like they used to.Most people are “inside” most of the day in our modern world.The more fat cells your body has, the more at risk of a deficiency, because the vitamin becomes trapped in those fat cells. One’s skin pigment (the darker your skin), the less UVB rays can penetrate.In the U.S., nearly everyone is deficient while living above 37 degrees north of the equator - in the U.S., that’d put you north of Washington, D.C.The majority of people in the United States (for example) do not get any vitamin D from the sun at all, during the winter months.Partly due to vigilant sun protection, since sunscreen with SPF 30 reduces vitamin D production by 95%.This deficiency is very common and on the rise.
It’s estimated as many as half of all children, teens and young adults are vitamin D deficient, as are as many as 25 to 57 percent of American adults It’s estimated that more than 40% of American adults have a vitamin D deficiency.
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