Dietary supplements are any substance that you take to improve your health or wellness. This includes vitamins, minerals, and herbs. The most common form is a pill, or capsule. You also can get them in powders, drinks, and foods. These supplements are not meant to cure diseases or health conditions. An exception is if the U.S. Food and Drug Administration (FDA) has approved it for a health claim.
^ Jump up to: a b Coghlan, M. L.; Haile, J; Houston, J; Murray, D. C.; White, N. E.; Moolhuijzen, P; Bellgard, M. I.; Bunce, M (2012). "Deep Sequencing of Plant and Animal DNA Contained within Traditional Chinese Medicines Reveals Legality Issues and Health Safety Concerns". PLoS Genetics. 8 (4): e1002657. doi:10.1371/journal.pgen.1002657. PMC 3325194. PMID 22511890.

If you lose weight suddenly or for unknown reasons, talk to your health care professional immediately. Unexplained weight loss may indicate a serious health condition. And even if it doesn't, simply being underweight is linked to menstrual irregularity, menstrual cessation (and sometimes, as a result, dental problems, such as erosion of the enamel and osteoporosis) and a higher risk of early death.

As continual research on the properties of supplements accumulates, databases or fact sheets for various supplements are updated regularly, including the Dietary Supplement Label Database,[5] Dietary Supplement Ingredient Database,[104] and Dietary Supplement Facts Sheets of the United States.[105] In Canada where a license is issued when a supplement product has been proven by the manufacturer and government to be safe, effective and of sufficient quality for its recommended use, an eight-digit Natural Product Number is assigned and recorded in a Licensed Natural Health Products Database.[106] The European Food Safety Authority maintains a compendium of botanical ingredients used in manufacturing of dietary supplements.[107]
Iodine is needed for normal mental development of the baby, but it can be difficult to get enough from food. Ways of increasing iodine intake include using iodised salt, eating fish and seafood weekly (see your health professional for advice about safe types and amounts of fish), or using a multivitamin supplement that contains iodine and is safe for pregnancy.
Native to East Asia, soybeans have been a major source of protein for people in Asia for more than 5,000 years. Soybeans are high in protein (more than any other legume) and fiber, low in carbohydrates and are nutrient-dense. Soybeans contain substances called phytoestrogens, which can significantly lower your "bad" LDL cholesterol and raise your "good" HDL cholesterol.

Nutrition interventions that target mothers alone inadequately address women's needs across their lives: during adolescence, pre-conception, and in later years of life. They also fail to capture nulliparous women. The extent to which nutrition interventions effectively reach women throughout the life course is not well-documented. In this comprehensive narrative review, we summarized the impact and delivery platforms of nutrition-specific and nutrition-sensitive interventions targeting adolescent girls, women of reproductive age (non-pregnant, non-lactating), pregnant and lactating women, women with young children<5 years, and older women, with a focus on nutrition interventions delivered in low- and middle-income countries. We found that though there were many effective interventions that targeted women's nutrition, they largely targeted women who were pregnant and lactating or with young children. There were major gaps in the targeting of interventions to older women. For the delivery platforms, community-based settings, compared to facility-based settings, more equitably reached women across the life course, including adolescents, women of reproductive age, and older women. Nutrition-sensitive approaches were more often delivered in community-based settings, however, the evidence of their impact on women's nutritional outcomes was less clear. We also found major research and programming gaps targeting overweight, obesity, and non-communicable disease. We conclude that focused efforts on women during pregnancy and in the first couple of years postpartum fails to address the interrelation and compounding nature of nutritional disadvantages that are perpetuated across many women's lives. In order for policies and interventions to more effectively address inequities faced by women, and not only women as mothers, it is essential that they reflect how, when, and where to engage with women across the life course.
In the United States, manufacturers of dietary supplements are required to demonstrate safety of their products before approval is granted for commerce.[83] Despite this caution, numerous adverse effects have been reported,[72] including muscle cramps, hair loss, joint pain, liver disease, and allergic reactions, with 29% of the adverse effects resulting in hospitalization, and 20% in serious injuries or illnesses.[72] By more than five-fold, the highest incidence of health problems derived from "combination products", whereas supplements for vitamins and minerals, lipid products, and herbal products were less likely to cause adverse effects.[72]
As continual research on the properties of supplements accumulates, databases or fact sheets for various supplements are updated regularly, including the Dietary Supplement Label Database,[5] Dietary Supplement Ingredient Database,[104] and Dietary Supplement Facts Sheets of the United States.[105] In Canada where a license is issued when a supplement product has been proven by the manufacturer and government to be safe, effective and of sufficient quality for its recommended use, an eight-digit Natural Product Number is assigned and recorded in a Licensed Natural Health Products Database.[106] The European Food Safety Authority maintains a compendium of botanical ingredients used in manufacturing of dietary supplements.[107]
An optimum intake of all nutrients is difficult to achieve even for those who eat almost exclusively an excellent diet of nutrient dense foods, such as meat and innards, fish, shellfish, fowl, eggs, nuts, mushrooms, and vegetables, berries and nutritious fruits. Some nutrients such as folic acid or carotenoids in vegetables are absorbed better from processed than unprocessed foods. Although vegetables are often considered to be a good source of vitamins, for example vitamin A from carrots, vitamin A is only found in animal products such as liver, egg yolk, fish cod and cod liver oil. Although eating raw vegetables is helpful for several reasons (vitamin C, fiber, microbiota), carotenoids (alpha/beta-carotene, lutein, lycopene) in vegetables are less well absorbed from raw than cooked food and better absorbed in the presence of added fat. [38,39]. Nutrients in vegetables are better absorbed when finely chewed, graded, or mashed [38], and cooking and grinding meat reduces the energy required to digest it [40] and increases nutrient absorption [41].
Dietary supplements are complex products. The FDA has established good manufacturing practices (GMPs) for dietary supplements to help ensure their identity, purity, strength, and composition. These GMPs are designed to prevent the inclusion of the wrong ingredient, the addition of too much or too little of an ingredient, the possibility of contamination, and the improper packaging and labeling of a product. The FDA periodically inspects facilities that manufacture dietary supplements.
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