Calcium News and Research

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Calcium, the most abundant mineral in the body, is found in some foods, added to others, available as a dietary supplement, and present in some medicines (such as antacids). Calcium is required for muscle contraction, blood vessel expansion and contraction, secretion of hormones and enzymes, and transmitting impulses throughout the nervous system. The body strives to maintain constant concentrations of calcium in blood, muscle, and intercellular fluids, though less than <1% of total body calcium is needed to support these functions.

The remaining 99% of the body's calcium supply is stored in the bones and teeth where it supports their structure. Bone itself undergoes continuous remodeling, with constant resorption and deposition of calcium into new bone. The balance between bone resorption and deposition changes with age. Bone formation exceeds resorption in growing children, whereas in early and middle adulthood both processes are relatively equal. In aging adults, particularly among postmenopausal women, bone breakdown exceeds formation, resulting in bone loss that increases the risk of osteoporosis over time.
Calcium supplements can decrease the risk of all types of colorectal polyps

Calcium supplements can decrease the risk of all types of colorectal polyps

People in Washington are living longer but not necessarily better

People in Washington are living longer but not necessarily better

Exercise is more influential than calcium intake in determining bone strength in young women

Exercise is more influential than calcium intake in determining bone strength in young women

Russian doctors appreciate benefits of natural remedies

Russian doctors appreciate benefits of natural remedies

Epilepsy drugs can increase the rate of bone loss in older women

Epilepsy drugs can increase the rate of bone loss in older women

Some African American adolescents who live in cities have low levels of vitamin D

Some African American adolescents who live in cities have low levels of vitamin D

BioSante publishes oral insulin study

BioSante publishes oral insulin study

Novel molecular targeting technologies to deliver gene-silencing therapy

Novel molecular targeting technologies to deliver gene-silencing therapy

Most Americans are not meeting their dietary needs for calcium

Most Americans are not meeting their dietary needs for calcium

Researchers identify molecules that underlie nerve fiber degeneration in multiple sclerosis patients

Researchers identify molecules that underlie nerve fiber degeneration in multiple sclerosis patients

New findings suggest mammograms may help predict cardiovascular disease

New findings suggest mammograms may help predict cardiovascular disease

Intensive exercising after menopause may reduce bone loss

Intensive exercising after menopause may reduce bone loss

Cystic Fibrosis Foundation Therapeutics awards $21 million to Vertex

Cystic Fibrosis Foundation Therapeutics awards $21 million to Vertex

Study has important implications for African Americans who suffer from high blood pressure

Study has important implications for African Americans who suffer from high blood pressure

About one in 35 adult Americans is at high risk of coronary heart disease

About one in 35 adult Americans is at high risk of coronary heart disease

Multimillion-dollar electron microscope unveils shapes of viruses and proteins

Multimillion-dollar electron microscope unveils shapes of viruses and proteins

Blood pressure screening for children should start at age 3, according to the latest government diagnosis and treatment guidelines

Blood pressure screening for children should start at age 3, according to the latest government diagnosis and treatment guidelines

A strengthened cement has been devised specifically for facial reconstructive surgery

A strengthened cement has been devised specifically for facial reconstructive surgery

Lab calibration errors may add $199 million to U.S. health care costs

Lab calibration errors may add $199 million to U.S. health care costs

Wyeth gets FDA approval for a novel protein device that enhances bone healing

Wyeth gets FDA approval for a novel protein device that enhances bone healing