Whats a Vitamin D Deficiency?

Can vitamin D help prevent certain cancers and other diseases such as type 1 diabetes, cardiovascular disease, and certain autoimmune and chronic diseases? To answer these questions and more, UCSD School of Medicine and GrassrootsHealth bring you this innovative series on vitamin D deficiency. Join nationally recognized experts as they discuss the latest research and its implications. In this program, Robert Heaney, MD, gives an overview of vitamin D deficiency. Series: Vitamin D Deficiency - Treatment and Diagnosis [2/2009] [Health and Medicine] [Professional Medical Education] [Show ID: 15751]

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[HAPPYxGEORGE]

Our governments are blocking our sun via Geoengineering at our expense

[bouiglob]

Skin color variation shows how important vitamin D is. Though natural selection, some of our ancestors died just because their skin was just a bit too dark as they migrated north out of Africa. The dark skin was not an efficient vitamin D absorber and it caused vitamin D deficiency. Only the lighter skin people survived as they migrated north where the sun was less direct. This is why you see skin color variation in humans, and it is proof of how important this

vitamin D is.

[Nancy Leal]

Concluding, we all need sun, humanity has always lived with sun naturally, and in my opinion and depending on where we live and skin type, we should use the comon sense to avoid overexposure. If it's not possible because the person works outside etc, so it's better to use sunscreen after sometime of exposure. It's not the case if one lives in a region with little and weak sun and can/should take sun whenerer it appears like the original population. PS: I almost wrote a thesis in response... :-o

[Nancy Leal]

(continuing) But, as I can observe here, the skin of many reacts after more time taking sun and they also get brown, in general a little reddish. The best for them is to take sun gradually until they are able to produce more melanin and faster. Darker people who already have genetic determination to produce a certain amount of melanin "automatically" as protection, got by ancestors who lived a long time in warm places, have more problems in cold places, because it's like a sunscreen. (continue)

[Nancy Leal]

(continuing) North Europeans and descendants must be more careful because their genetics is from ancestors adapted to live with little sun. Certainly they stopped producing melanin (also hair etc.) exposed to extreme cold and could catch better even weak sun rays. Light is important to control our sleep etc and eyes with little melanin, more "open" to catch it, also helped them during long winters. Genetically their melanocytes are sleeping, don't wake up easily, and most burn quickly. (cont.)

[Nancy Leal]

(continuing) In tropical countries we identify races more by the features than color. The darker you are or get, more time you can take sun without danger. If you feel burning, with or without sunscreen, it's time to leave As today we don't live so exposed as the native population producing melanin all the time, it doesn't become genetic and the color fades in colder places/climate. See that "cold" Canadian Indians are much lighter than Latin ones as well as Asians in higher latitudes. (cont)

[Nancy Leal]

I don't know the minimum sun exposure that we need, but nobody wore sunglasses or needed sunscreen in the nature before... Based on my observations living in a sunny country (Brazil), I can tell you that a lot depends on where we live and our genetics. Europeans etc living in warm regions also get brown like the native population, unless they avoid sun, because the skin produces melanin to protect it while catches the sun without burning etc. It's quick here by the ofen contact with sun. (cont.)

[pisces333888]

One scientist states that the sunscreens and the sunglasses are blocking the necessary, beneficial sun rays, even if one does get the 15 minutes minimum sun exposure, if one wears sunglasses or the sunscreen, one's body would not synthesize Vitamin D.(?)

[StratMatt777]

Naturopaths prescribe 3,000 to 4,000 a day for people with minor complaints like fatigue or depression. I'm not a doctor and this is not legal advice! :P

[StratMatt777]

ANY immune disease I believe. I'm sure you've seen all the vitamin D videos on here by now! :)

[StratMatt777]

A video from a Brazilian doctor says that taking over 10,000 can cause irreversible kidney damage and really high doses can cause kidney stones.

[StratMatt777]

/watch?v=kPQGKmrQnEc

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