As the human body cannot produce all the vitamins we need to function, the best way to source these nutrients is through a well-balanced diet. Dietary Reference Intakes (DRIs): Recommended Dietary Allowances and Adequate Intakes, Vitamins. The body needs more than 40 nutrients: vitamins, minerals and water, as well as energy-providing protein, carbohydrates, and fats. Any protective effects of vitamins or phytochemicals against cancer may depend on the combined effect of these nutrients in foods.
Generally, vitamins and most nutrients are best absorbed and used by the body when they come from natural sources (plants, animals) and are present in naturally occurring, complex combinations. This is why vitamin C is one of the key ingredients found in many antiaging skin care products.
Dietary vitamin A is obtained from preformed vitamin A (or retinyl esters), which is found in animal foods (liver, milk, kidney, fish oil), fortified foods, and drug supplements. Essential Fatty Acids, such as Omega-3s play a vital component in skin repair, moisture content of skin, and elasticity.
This risk may prompt older adults to reevaluate their use of calcium supplements for bone protection. Vitamin A also helps the surface of the eye, mucous membranes and skin be effective barriers to bacteria and viruses, reducing the risk of eye infections , respiratory problems and other infectious diseases.
The downside of using a lot of vitamins and protein is that your hair icould get really thick and grow so fast that you need haircuts often. The effects of antioxidant vitamins and carotenoids (vitamins C or E, or beta-carotene) on stroke have been studied extensively.