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Vitamin B 12 is the most chemically complex of all vitamins, [6] and for humans the only vitamin that must be sourced from animal-derived foods or supplements. [2] [7] Only some archaea and bacteria can synthesize vitamin B 12. [8] Vitamin B 12 deficiency is a widespread condition that is particularly prevalent in populations with low ...
A balanced diet includes appropriate amounts of all essential and non-essential nutrients. These can vary by age, weight, sex, physical activity levels, and more. A lack of just one essential nutrient can cause bodily harm, just as an overabundance can cause toxicity.
Because the body does not manufacture certain fatty acids (termed essential fatty acids), they must be obtained through one's diet. Ethanol is not an essential nutrient, but it does provide calories.The United States Department of Agriculture uses a figure of 6.93 kilocalories (29.0 kJ) per gram of alcohol (5.47 kcal or 22.9 kJ per ml ) for ...
The potential culprit: an overabundance of certain omega-6 fatty acids — perhaps from ultraprocessed foods in your diet — that may hinder the anti-inflammatory and tumor-fighting properties of ...
RLS can be difficult to describe – but most people say they feel things like a strange sensation while resting, relief of the sensation with movement, and they experience worsening of symptoms ...
Though most any food can become contaminated with bacteria or a virus, "foods like fresh produce, raw or undercooked meats or fish, raw milk and eggs and uncooked flours all are potential carriers ...
Certain vitamin-like compounds that are recommended in the diet, such as carnitine, are thought useful for survival and health, but these are not "essential" dietary nutrients because the human body has some capacity to produce them from other compounds.
Maternal vitamin D deficiency can cause fetal bone defects from before birth and impairment of bone quality after birth. [66] [67] Rickets typically appear between 3 and 18 months of age. [68] This condition can be caused by vitamin D, calcium or phosphorus deficiency. [69]