alexa Hypochlorhydric stomach: a risk condition for calcium malabsorption and osteoporosis?
Immunology

Immunology

Rheumatology: Current Research

Author(s): Sipponen P, Hrknen M

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Abstract Malabsorption of dietary calcium is a cause of osteoporosis. Dissolution of calcium salts (e.g. calcium carbonate) in the stomach is one step in the proper active and passive absorption of calcium as a calcium ion (Ca(2+)) in the proximal small intestine. Stomach acid markedly increases dissolution and ionization of poorly soluble calcium salts. If acid is not properly secreted, calcium salts are minimally dissolved (ionized) and, subsequently, may not be properly and effectively absorbed. Atrophic gastritis, gastric surgery, and high-dose, long-term use of antisecretory drugs markedly reduce acid secretion and may, therefore, be risk conditions for malabsorption of dietary and supplementary calcium, and may thereby increase the risk of osteoporosis in the long term. This article was published in Scand J Gastroenterol and referenced in Rheumatology: Current Research

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