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The body's stores for different vitamins vary widely; vitamins A, D, and B 12 are stored in significant amounts, mainly in the liver, [20] and an adult's diet may be deficient in vitamins A and D for many months and B 12 in some cases for years, before developing a deficiency condition.
Many multivitamin formulas contain vitamin C, B 1, B 2, B 3, B 5, B 6, B 7, B 9, B 12, A, E, D 2 (or D 3), K, potassium, iodine, selenium, borate, zinc, calcium, magnesium, manganese, molybdenum, beta carotene, and/or iron. Multivitamins are typically available in a variety of formulas based on age and sex, or (as in prenatal vitamins) based on ...
In December, 2017 Vitamin World, Inc became a "C" class Corporation, "Vitamin World USA Corp." In January 2018, Vitamin World was purchased by Feihe International Inc. through a Section 363 sale process. [4] Feihe International Inc. is the market-share leader in the manufacturing and distributing of infant formula in China.
Vitamin A deficiency is rare in the United States, where most people get enough from food sources. Adults shouldn’t have more than 3,000 mcg per day; if excessive vitamin A builds up in the ...
The deficiency of vitamin B6 among institutionalized elderly in Europe ranges from below 1% to 75%. B-vitamins are primarily found in animal-based foods, making deficiencies more common among those with limited animal food intake due to cultural, religious, or economic reasons.
Vitamin D 3 (cholecalciferol) is produced industrially by exposing 7-dehydrocholesterol to UVB and UVC light, followed by purification. The 7-dehydrocholesterol is sourced as an extraction from lanolin, a waxy skin secretion in sheep's wool. [203] Vitamin D 2 (ergocalciferol) is produced in a similar way using ergosterol from yeast as a ...
A 2020 analysis projected that the global market for vitamins and dietary supplement products would reach $196.6 billion by 2028, where the growth in market size is largely attributed to recent technological advancements in product manufacturing, increased demand for products advertised as healthy, increased product availability, and population ...
Since Vitamin D is a fat-soluble vitamin, it cannot be added to a wide variety of foods. Foods that it is commonly added to are margarine, vegetable oils and dairy products. [ 34 ] During the late 1800s, after the discovery of curing conditions of scurvy and beriberi had occurred, researchers were aiming to see if the disease, later known as ...