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Sodium methylparaben (sodium methyl para-hydroxybenzoate) is a compound with formula Na(CH 3 (C 6 H 4 COO)O). [1] It is the sodium salt of methylparaben. [1] It is a food additive with the E number E219 which is used as a preservative. [2]
Soil adsorption coefficient values were calculated by the U.S. Environmental Protection Agency as 1.94 (methylparaben), 2.20 (ethylparaben), 2.46 (propylparaben), and 2.72 (butylparaben), [28] all of which suggest that parabens have the ability to adhere to the organic portion of sediment and sludge, and thus, persist environmentally. [29]
Methylparaben is commonly used as a fungicide in Drosophila food media at 0.1%. [5] To Drosophila , methylparaben is toxic at higher concentrations, has an estrogenic effect (mimicking estrogen in rats and having anti- androgenic activity), and slows the growth rate in the larval and pupal stages at 0.2%.
Inadequate intake of free water associated with total body sodium depletion. Typically in elderly or otherwise disabled patients who are unable to take in water as their thirst dictates and also are sodium depleted. This is the most common cause of hypernatremia. [citation needed]
Tea and toast syndrome is a form of malnutrition commonly experienced by elderly people who cannot prepare meals and tend to themselves. The term is not intrinsic to tea or bread products only; rather, it describes limited dietary patterns that lead to reduced calories resulting in a deficiency of vitamins and other nutrients.
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In hospital it affects about 15–20% of people; however, only 3–5% of people who are hospitalized have a sodium level less than 130 mmol/L. Hyponatremia has been reported in up to 30% of the elderly in nursing homes and is also present in approximately 30% of people who are depressed on selective serotonin reuptake inhibitors.