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A low-sulfur diet is a diet with reduced sulfur content. Sulfur containing compounds may also be referred to as thiols or mercaptans. Important dietary sources of sulfur and sulfur containing compounds may be classified as essential mineral (e.g. elemental sulfur), essential amino acid (methionine) and semi-essential amino acid (e.g. cysteine). Sulfur is an essential ''dietary mineral'' primarily because amino acids contain it. Sulphur is thus considered fundamentally important to human health, and conditions such as nitrogen imbalance and protein-energy malnutrition may result from deficiency. Methionine cannot be synthesized by humans, and cysteine synthesis requires a steady supply of sulfur. The recommended daily allowance (RDA) of methionine (combined with cysteine) for adults is set at 13–14 mg kg-1 day-1 (13–14 mg per kg of body weight per day), but some researchers have argued that this figure is too low, and should more appropriately be 25 mg kg-1 day-1. Despite the importance of sulfur, restrictions of dietary sulfur are sometimes recommended for certain diseases and for other reasons. Practitioners of complimentary and alternative medicine also sometimes recommend low sulfur diets for the so-called dental amalgam mercury poisoning, a condition which is not accepted to exist by most mainstream experts. ==Cystathionine beta-synthase deficiency== Cystathionine β-synthase (CBS) deficiency is a serious disorder of transsulfuration which is managed with methionine restricted dieting. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Low-sulfur diet」の詳細全文を読む スポンサード リンク
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