Aldosterone molecule. Computer graphic of a molecule of the hormone aldosterone (chemical formula: C21.H28.O5). The atoms are shown as cylinders, and are colour coded: carbon is green, hydrogen is yellow, and oxygen is blue. Aldosterone is a hormone released by the adrenal glands which helps maintain the body's water balance. It does this by increasing or decreasing uptake of sodium and potassium into tissues. Excess aldosterone levels in the blood can lead to high blood pressure and muscle weakness.

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