diet supplementsDiet Supplements are intended to provide nutrients, such as vitamins, minerals, fatty acids and/or amino acids, that are missing or are not consumed in sufficient quantity in a person’s normal diet, to maintain health.

The hormones DHEA and Pregnenolone (steroids) and the pineal hormone Melatonin are marketed as dietary supplements in the U.S. The U.S. defines diet supplements as food, while other countries may define them as drugs. Diet pills carry a somewhat negative connotation.

Because the body does not store most vitamins, humans must consume them regularly to avoid deficiency. In humans there are 13 vitamins:

The 9 Water-soluble vitamins (8 B vitamins and vitamin C) dissolve easily in water, and in general, are readily excreted from the body. Because they are not readily stored, consistent daily intake is important.

The 4 Fat-soluble vitamins (A, D, E and K) are absorbed through the intestinal tract with the help of lipids (fats). Because they are more likely to accumulate in the body, they are more likely to lead to vitamin poisoning than are water-soluble vitamins.

Due to toxicity, most common vitamins have recommended upper daily intake amounts. The most common poisoning with multinutrient supplement pills does not involve a vitamin, but is rather due to the mineral iron.

Some sources state that sixteen minerals are required to support human biochemical processes: Potassium, Chloride, Sodium, Calcium, Phosphorus, Magnesium, Zinc, Iron, Manganese, Copper, Iodine, Selenium, Molybdenum, Sulpher, Chromium and Floride. These are usually included in multi diet supplements.

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