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For the most part, vitamins are obtained from the diet, but some are acquired by other means: for example, microorganisms in the gut flora produce vitamin K and biotin; and one form of vitamin D is synthesized in skin cells when they are exposed to a certain wavelength of ultraviolet light present in sunlight.
Vitamin B complex. Vitamin B 1 (thiamin) Vitamin B 2 (riboflavin) Vitamin B 3 (niacin) Vitamin B 5 (pantothenic acid) Vitamin B 6 group: Pyridoxine; Pyridoxal-5-Phosphate; Pyridoxamine; Vitamin B 7 (biotin) Vitamin B 9 (folate) Vitamin B 12 (cobalamin) Choline; Vitamin A (e.g. retinol (see also - provitamin A carotenoids)) Vitamin C (Ascorbic ...
Some "minerals" are essential for life, but most are not. [1] [2] [3] Minerals are one of the four groups of essential nutrients; the others are vitamins, essential fatty acids, and essential amino acids. [4] The five major minerals in the human body are calcium, phosphorus, potassium, sodium, and magnesium. [2]
Most of the elements needed for life are relatively common in the Earth's crust. Aluminium , the third most common element in the Earth's crust (after oxygen and silicon ), serves no function in living cells, but is toxic in large amounts, depending on its physical and chemical forms and magnitude, duration, frequency of exposure, and how it ...
Vitamins occur in a variety of related forms known as vitamers. The vitamers of a given vitamin perform the functions of that vitamin and prevent symptoms of deficiency of that vitamin. Vitamins are those essential organic molecules that are not classified as amino acids or fatty acids.
Most vitamins are considered safe for up to two years past their expiration date (unless they contain mold), but may become less potent over time. Pregnant women and people in need of regular ...
5 Vitamins That Aid in Weight Loss Vitamin D . Vitamin D has a heavy hand in many bodily functions. Its deficiency has been linked to poor metabolic health, which is what causes our bodies to burn ...
Colin Dunn/Flickr. Vitamin D isn't present in most of the foods we eat, but it's a critical ingredient that keeps our bones strong by helping us absorb calcium. Getting sunlight helps our bodies ...