Vitamins are necessary because they supplement those that the body excretes from time to time. They also help the body be healthy and the immune system boosted to fight off everyday infection from surroundings.
Vitamin K is the essential vitamin necessary for blood clotting.
Vitamin A
Vitamin A is necessary for good health. Eat your carrots.
Vitamin A is necessary for night vision.
Vitamin C
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Vitamin D is necessary for good function of brian. Javed Faysal 94
Vitamin D is produced by ultraviolet radiation on your skin. The UV light converts a precursor molecule to vitamin D.
The protein secreted by the stomach that is necessary for the absorption of vitamin B12 is called intrinsic factor. Intrinsic factor binds to vitamin B12 in the small intestine, allowing for its absorption into the bloodstream. Without intrinsic factor, vitamin B12 cannot be effectively absorbed and can lead to a deficiency.
My Mum supplements her diet with vitamin pills.
Vitamin A is a vitamin that is needed by the retina of the eye in the form of a specific metabolite, the light-absorbing molecule retinal, that is necessary for both low-light and color vision.
vitamin