Lower-than-normal blood calcium. Low blood calcium makes the nervous system highly irritable with tetany (spasms of the hands and feet, muscle cramps, abdominal cramps, overly active reflexes, etc.) Chronic calcium deficiency contributes to poor mineralization of bones, soft bones (osteomalacia) and osteoporosis; and, in children, rickets and impaired growth. Food sources of calcium include dairy foods, some leafy green vegetables such as broccoli and collards, canned salmon, clams, oysters, calcium-fortified foods, and tofu. According to the National Academy of Sciences, adequate intake of calcium is 1 gram daily for both men and women. The upper limit for calcium intake is 2.5 grams daily.
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Abnormally low levels of calcium in the circulating blood; commonly denotes subnormal concentrations of calcium ions.

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hy·po·cal·ce·mia or chiefly Brit hy·po·cal·cae·mia .hī-pō-.kal-'sē-mē-ə n a deficiency of calcium in the blood
hy·po·cal·ce·mic or chiefly Brit hy·po·cal·cae·mic -mik adj

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hy·po·cal·ce·mia (hi″po-kal-seґme-ə) [hypo- + calci- + -emia] reduction of the blood calcium below normal; manifestations include hyperactive deep tendon reflexes, Chvostek sign, muscle and abdominal cramps, and carpopedal spasm. hypocalcemic adj

Medical dictionary. 2011.

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  • hypocalcemia — noun Etymology: New Latin Date: 1925 a deficiency of calcium in the blood • hypocalcemic adjective …   New Collegiate Dictionary

  • hypocalcemia — /huy poh kal see mee euh/, n. Pathol. an abnormally small amount of calcium in the blood. [1920 25; HYPO + CALC + EMIA] * * * …   Universalium

  • hypocalcemia — noun The condition of having an abnormally low concentration of calcium ions in the blood …   Wiktionary

  • hypocalcemia — n. low level of calcium in the blood (Medicine) …   English contemporary dictionary

  • hypocalcemia — hy·po·cal·ce·mia …   English syllables

  • hypocalcemia — hy•po•cal•ce•mi•a [[t]ˌhaɪ poʊ kælˈsi mi ə[/t]] n. pat an abnormally small amount of calcium in the blood • Etymology: 1920–25 …   From formal English to slang

  • hypocalcemia — noun abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency • Syn: ↑hypocalcaemia • Ant: ↑hypercalcemia • Hypernyms: ↑symptom …   Useful english dictionary

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  • Milk fever — Milk fever, post parturient hypocalcemia, or parturient paresis is a disease, usually of dairy cows, characterized by reduced blood calcium levels. It is most common in the first few days of lactation, when demand for calcium for milk production… …   Wikipedia

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