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This is pretty true as well, I remember something on television about Cullen Jones (an African American Olympic Swimmer) who did some outreach to the African American community in regards to this issue of getting them involved in and learning how to swim. I was amazed at how many African Americans don't know how to swim. It is one thing not to swim but not knowing - that blew me away. For me, as a kid, swimming was a big part of my life whether in a pool, beach, rivers, whatever and all kinds of water sports (I guess it is just part of 'white culture') . And I probably learned to swim at a very young age because I don't even remember learning. I did not know one kid or parent that did not or could not swim.
And another thing about water sports is that the sun intensifies when it reflects of the surface of water and if you are constantly in chlorinated water I am sure that aint good for your dermis.
Quote:
Originally Posted by Shiloh1
Sun Scary!
I do know how to swim. My sister doesn't. But my parents were pretty hesitant about letting us go out to the pool at times. Even though we had some friends who were trained lifeguards.
Vitamin D is important for bone health, mental health. Dark skin blocks the sun and inhibits Vitamin D production -- darker skinned people need more sun than lighter skinned people.
The researchers' theory is that, in northern latitudes, the dark skin of African-Americans cannot absorb enough sunlight to generate adequate amounts of vitamin D, which is often called the "sunshine vitamin." The body uses ultraviolet rays from the sun to manufacture vitamin D in the inner layers of the skin.
Vitamin D is needed for strong bones; doctors nearly 100 years ago associated a lack of adequate sun exposure with rickets among child laborers, exemplified by bowed legs. Recent studies also have shown that low levels of vitamin D in the blood seem to contribute to a weak immune system and a host of diseases, such as cancer and multiple sclerosis. [Infographic: The Power of Vitamin D]
Vitamin D is important for bone health, mental health. Dark skin blocks the sun and inhibits Vitamin D production -- darker skinned people need more sun than lighter skinned people.
The researchers' theory is that, in northern latitudes, the dark skin of African-Americans cannot absorb enough sunlight to generate adequate amounts of vitamin D, which is often called the "sunshine vitamin." The body uses ultraviolet rays from the sun to manufacture vitamin D in the inner layers of the skin.
Vitamin D is needed for strong bones; doctors nearly 100 years ago associated a lack of adequate sun exposure with rickets among child laborers, exemplified by bowed legs. Recent studies also have shown that low levels of vitamin D in the blood seem to contribute to a weak immune system and a host of diseases, such as cancer and multiple sclerosis. [Infographic: The Power of Vitamin D]
A few years ago I was seriously deficient in vitamin d and I had to go on a 2 month intensive dose. Now my doctor prescribed me to take 2000iu daily.
02-23-2014, 11:06 PM
2K5Gx2km
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Quote:
Originally Posted by malamute
Lack of sun is scary.
Vitamin D is important for bone health, mental health. Dark skin blocks the sun and inhibits Vitamin D production -- darker skinned people need more sun than lighter skinned people.
The researchers' theory is that, in northern latitudes, the dark skin of African-Americans cannot absorb enough sunlight to generate adequate amounts of vitamin D, which is often called the "sunshine vitamin." The body uses ultraviolet rays from the sun to manufacture vitamin D in the inner layers of the skin.
Vitamin D is needed for strong bones; doctors nearly 100 years ago associated a lack of adequate sun exposure with rickets among child laborers, exemplified by bowed legs. Recent studies also have shown that low levels of vitamin D in the blood seem to contribute to a weak immune system and a host of diseases, such as cancer and multiple sclerosis. [Infographic: The Power of Vitamin D]
Dark skin blocks the sun and inhibits Vitamin D production -- darker skinned people need more sun than lighter skinned people.
This point, which is presumed by that article, is not actually true. Melanin in the skin has not actually been found to block vitamin D production. That's often parroted as an "everybody knows" kind of factoid, butno real tests have borne that out. By the same token, anything that blocks UV rays should have the same effect...which it doesn't.
Actual studies indicate that skin pigmentation is not the reason for vitamin D deficiencies:
Quote:
Some research shows that dark-skinned people living in temperate climates have lower vitamin D levels.[70][71][71] It has been suggested that dark-skinned people are less efficient at making vitamin D because melanin in the skin hinders vitamin D synthesis; however, a recent study has found novel evidence that low vitamin D levels among Africans may be due to other reasons.[72] Recent evidence implicates parathyroid hormone in adverse cardiovascular outcomes. Black women have an increase in serum PTH at a lower 25(OH)D level than white women.[73] A large scale association study of the genetic determinants of vitamin D insufficiency in Caucasians found no links to pigmentation.[74][75]
On the other hand, the uniform occurrence of low serum 25(OH)D in Indians living in India[76] and Chinese in China,[77] does not support the hypothesis that the low levels seen in the more pigmented are due to lack of synthesis from the sun at higher latitudes. The leader of the study has urged dark-skinned immigrants to take vitamin D supplements nonetheless, saying, "I see no risk, no downside, there's only a potential benefit
In the US, a vitamin D deficiency is a matter of a deficient diet, because the vitamin is readily available in common sources. When I was a kid in the 50s, my mother made us take cod liver oil in the winter...which was certainly not the most pleasant way to take it, but we didn't have GNC stores back then, and it wasn't yet a milk additive in our area.
Generally speaking, black women age better when comparing women of similar socio-economic status, lifestyle habits etc. White women that live "clean" (no smoking, minimal drinking) age pretty well, though.
Good points. Every group of people out there have their own issues with respect to age. Some undesirable things occur with age that are outside of race per se and are found sub groups of all the races; White, Black, Middle Eastern, Indian or mixed people can all have dark moles, dark circles around their eyes, or other features that ad to age affects.
A few years ago I was seriously deficient in vitamin d and I had to go on a 2 month intensive dose. Now my doctor prescribed me to take 2000iu daily.
They said the same when I went in. I think they must have just started testing for this recently. I'm sure Vit D sales are at a record high.
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. I'm sure Vit D sales are at a record high.
