The X and Y Chromosomes Determine Your Sex. One chromosome pair - the sex chromosomes - is unique. You don't necessarily end up with a matching pair. Typically females have two X chromosomes and males have an X and a Y. Mothers always pass an X chromosome on to their children.
On the other hand, the absorption of nonheme iron, the major dietary pool, is greatly influenced by meal composition. Ascorbic acid is a powerful enhancer of nonheme iron absorption and can reverse the inhibiting effect of such substances as tea and calcium/phosphate.
Vitamin D. Increase your body's absorption of calcium without having to take excessive doses by getting plenty of vitamin D. The active form of vitamin D increases absorption of both calcium and magnesium and inhibits excretion of calcium through the urine. Without vitamin D, calcium is very poorly absorbed.imilarly, high doses of vitamin A can inhibit vitamin K absorption. Conversely, some vitamins are absorbed more efficiently in the presence of other vitamins. Vitamin C increases the absorption of chromium and iron. Some vitamins participate in the transport of other vitamins into the body.