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.

High blood pressure in pregnancy may lead to heart disease

Women who develop high blood pressure during pregnancy are more likely to develop increased coronary calcification later in life than those who maintained a normal blood pressure, researchers said in Hypertension: Journal of the American Heart Association.

6 Feb 2007

Soft drink giants head to court over claims about new drink

A nonprofit consumer watchdog group the Center for Science in the Public Interest (CSPI) is taking soft drinks giants Coca-Cola and Nestle to court for making fraudulent claims about a new drink.

5 Feb 2007

Calpain-mediated mGluR1-alpha truncation

Tricking a key enzyme can soothe over-excited receptors in the brain, say neuroscientists, calling this a possible strategy against stroke, Alzheimer's and other neurodegenerative diseases.

31 Jan 2007

Osteoporosis and men

A McMaster University researcher is alerting men and their doctors that osteoporosis isn't just a woman's problem but that the bone-wasting disease can severely afflict them, too.

30 Jan 2007

Statins slow the progression of aortic valve stenosis

The trial provides the first prospective clinical evidence that aortic valves have an active biology that can be targeted with medical therapy and contradicts research published in 2005 in the New England Journal of Medicine, which concluded statins did not halt the progression of aortic stenosis.

30 Jan 2007

Linemen more than twice as likely as other players to have metabolic syndrome

After retirement, National Football League (NFL) linemen - generally the heaviest players - are more than twice as likely as other players to have a syndrome that puts them at risk for heart disease, stroke and other cardiovascular diseases

28 Jan 2007

Healthy 4 year-olds who eat lots of fat weigh less

Four-year-olds eat too few vegetables and too much sugar. They also bolt down lots of junk food, but children who eat more fat than others nevertheless weigh less. This is shown in a new dissertation from the Sahlgrenska Academy at Goteborg University in Sweden.

28 Jan 2007

$After low-trauma fracture, older men and women have similar and substantial risk of subsequent fracture$

After low-trauma fracture, older men and women have similar and substantial risk of subsequent fracture

Despite substantial evidence that a prior fracture results in an increased risk of subsequent fracture, less than 30 percent of postmenopausal women and less than 10 percent of men with prior fracture are treated to help lower this risk.

23 Jan 2007

Canadian researchers discover distinct dopamine signalling complex in the brain

Composed of two different types of dopamine receptors, this novel target may have a significant role in understanding and treating schizophrenia.

23 Jan 2007

Use of statins and beta-blockers as prescribed following heart attack associated with living longer

New research suggests that the pharmacological effects of taking medications such as statins and beta-blockers as prescribed following a heart attack is associated with living longer, according to a study in the January 10 issue of JAMA: The Journal of the American Medical Association.

9 Jan 2007

Effects of lactation on alveolar bone loss in experimental periodontitis

Mothers who breastfeed should be sure to have enough Calcium in their diet, or may risk bone loss around their teeth and gums, according to a new study that appears in the January issue of the Journal of Periodontology (JOP).

9 Jan 2007

FDA updates health claim for calcium and Vitamin D for osteoporosis

The Food and Drug Administration (FDA) is proposing to allow new claims on foods and dietary supplements containing calcium and Vitamin D to show their potential to reduce the risk of osteoporosis.

7 Jan 2007

Effect of vitamin supplementation on neonatal morbidity and mortality

Undernourished women who take a vitamin and mineral supplement while pregnant may be less likely than women taking only iron and folic acid supplements to have babies weighing less than 2,500 grams, and their newborns may be less likely to have morbidity in the first seven days of life.

2 Jan 2007