bioavailability
bioavailability
The rate and extent to which a vitamin is absorbed and used in the body is known as its bioavailability. This term describes how much of the nutrient is absorbed from the diet and made available for physiological functions within the body.
intrinsic factor
Yes, iron is absorbed better when taken with vitamin C. Vitamin C helps to enhance the absorption of iron in the body.
Vitamin D is absorbed through the skin, not the eyes.
The amount absorbed and subsequently used by the body
There are a selection of vitamins that are in the Vitamin K group. These are known as K1-K5. Vitamin K1 is not produced by the body but is absorbed from foods such as green leafy vegetables (spinach, cabbage, broccoli) and some fruits such as avocado and kiwi fruit. Vitamin K2 is produced by bacteria in the large intestine. Vitamins K3-K5 are synthetic and are not generally used for human consumption.
when the skin has not absorbed sufficent sunlight specifially u.v rays
Vitamin D is also known as Ergocalciferol (vitamin D2) and Cholecalciferol (vitamin D3).It is a fat soluble vitamin that helps body to absorb calcium. It is also known as sunshine vitamin because the body manufactures the vitamin after being exposed to sunshine.
I believe you are asking what vitamin helps calcium to be absorbed. It would be vitamin-D; most popular calcium supplements have been including vitamin-D in their product for quite some time now .
Vitamin C is absorbed by the body as well as sugar, however vitamin C is an acid (ascoribic acid) where as sugar is a carbohydrate. More simply, a glucose. So no, vitamin C is nothing like sugar at all.
Vitamin K is a fat-soluble vitamin produced by bacteria in the GI tract. In needs fat (lipids) to be absorbed by the intestines. You do not need to add extra Vitamin K.