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Describes symptoms, causes, and treatment of primary hyperparathyroidism where one or more enlarged parathyroid gland secretes too much parathyroid hormone.

Find out what vitamin D is and what it does in your body, what foods provide it, and about vitamin D supplements.

Mineral and bone disorder in chronic kidney disease occurs when damaged kidneys and abnormal hormone levels cause blood calcium and phosphorus imbalances.

Learn about the different types of diabetes insipidus, their causes, and how they are diagnosed and treated.

Summaries of research on the safety and efficacy of several of the most commonly used ingredients in weight-loss dietary supplements.

Aprender sobre suplementos dietéticos para perder peso, lo que hacen, lo que hay dentro, cómo se los regulan, y si pueden ser perjudiciosos.

Learn about weight-loss dietary supplements, what they do, the ingredients in them, how they are regulated, and if they can be harmful.

Recommended intakes and sources of calcium, effects of deficiency and excess, groups at risk of inadequacy, and interactions with medications.

Find out what calcium is and what it does in your body, what foods provide it, and about calcium supplements.

Read about symptoms and management of lactose intolerance, a condition in which you have digestive symptoms after you consume foods or drinks that have lactose.