Humans all need vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, so sunlight absorbed by melanin cannot be used for vitamin D production. Therefore, a dark-skinned person will produce less vitamin D than a light-skinned person when ...
humans all need vitamin D to build bones. People canget it by eating foods such as fish and milk, or from sunlight, so sunlight absorbed by melanin cannot be used forvitamin D production. Therefore, a dark—skinned person will produce less vitamin D than a lightskinnedperson when they ...
Do you know why people living in particular areas usually have a certain color?Biology and history are the two reasons for this.Skin contains something called melanin(黑色素),which determines a person"s skin color.The more melanin a person has,the darker his or her skin will be.The amount...
Skin color is also affected by another source---vitamin D. Humans all need vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, which causes vitamin production in the skin. Melanin protects skin by absorbing sunlight, so sunlight absorbed by...
Otherwise, you may not know that you're not getting enough vitamin D until you start having symptoms associated with vitamin D deficiency. The vitamin D test is very expensive, so it's not routinely done. How Much Vitamin D Do You Need? The amounts of vitamin D the US government now ...
Skin colour is also affected by another source-vitamin D.Humans all need vitamin D to build bones.People can get it by eating foods such as fish and milk,or from sunlight,which causes vitamin production in the skin.Melanin protects skin by absorbing sunlight,so sunlight absorbed by melanin c...
vitamin D.Humans all need vitamin D to build bones People can get it by eating foods such as fish and milk,or from sunlight which causes vitamin production in the skin Melanin protects skin by absorbing sunlight so sunlight absorbed by melanin cannot be used forvitamin D production T here...
The required dosage depends on the individual and needs, to be optimized over time. A risk of toxicity is extremely low. You’d need to take a ridiculous amount of the Vitamin D for extended periods of time for that to happen. If you do decide to get your Vitamin D from the sun, th...
(mackerel, tuna and sardines), mushrooms and fortified dairy and nondairy substitutes, is essential for good health. Humans need vitamin D tokeep healthy and to fight infections. The irony is that in winter, when people need vitamin D the most, most of us are not getting enough. So how ...
Humans all need Vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, which causes Vitamin D production in the skin. Melanin protects skin by absorbing sunlight, so sunlight absorbed by melanin cannot be used for Vitamin D production. T here...