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.

What do marathoners and heart failure patients have in common?

The new study shows that the fatigue that marathoners and other extreme athletes feel at the end of a race is caused by a tiny leak inside their muscles that probably also saps the energy from patients with heart failure.

12 Feb 2008

Most hypertension patients ignore recommended diet

A relatively small proportion of individuals with hypertension (high blood pressure) eat diets that align with government guidelines for controlling the disease, according to a report in the February 11 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.

12 Feb 2008

Calcium channel blockers cut risk of Parkinson's disease

People taking a widely used group of drugs known as calcium channel blockers to treat high blood pressure also appear to be cutting their risk of Parkinson's disease, according to a study published in the February 6, 2008, online issue of Neurology, the medical journal of the American Academy of Neurology.

7 Feb 2008

Vitamin D for cancer

It sounds too good to be true … a little inexpensive pill that could block the development of some cancers, strengthen bones, prevent multiple sclerosis and alleviate winter depression.

7 Feb 2008

Ascal (calcium carbasalate) not safer than aspirin

Changing prescription of low-dose aspirin into calcium carbasalate (brand name: Ascal) to prevent peptic ulcerations is not useful. Peptic ulcers are evenly distributed among users of calcium carbasalate and aspirin, for secondary prevention of myocardial infarction.

5 Feb 2008

Dairy-free diets may put boys with autism at risk for thin bones

Results of an early study suggest that dairy-free diets and unconventional food preferences could put boys with autism and autism spectrum disorder (ASD) at higher than normal risk for thinner, less dense bones when compared to a group of boys the same age who do not have autism.

29 Jan 2008

Evidence strongly supports diuretics as initial metabolic syndrome therapy, especially in black patients

New research shows that in people with high blood pressure as part of metabolic syndrome, a cluster of conditions that increases the risk for heart disease, diuretics offer greater protection against cardiovascular disease, including heart failure, and are at least as effective for lowering blood pressure as newer, more expensive medications.

28 Jan 2008

One third of stunting and a quarter of deaths among under 3s in poor countries could be prevented

If existing maternal and child nutrition interventions were implemented in poor countries, cases of stunting among under 3s could be reduced by a third, and deaths by up to a quarter, according to new research being published today.

24 Jan 2008

Gene variations associated with effectiveness of blood pressure medications

Patients with hypertension and certain gene variations experienced varying results with some blood pressure medications, suggesting matching a patient's genotype with certain hypertension medications could result in more favorable outcomes, according to a study in the January 23 issue of JAMA: The Journal of the American Medical Association.

23 Jan 2008

For pregnant women coffee is a definate no!

Researchers in the U.S. say they have found strong evidence that high doses of caffeine during pregnancy significantly increase the risk of miscarriage.

21 Jan 2008

$Risk of falling is overlooked as the major cause of fractures in the elderly$

Risk of falling is overlooked as the major cause of fractures in the elderly

An elderly person's risk of falling is too often overlooked when trying to prevent them from getting serious fractures, for instance of the hip or wrist, according to an article published in this week's BMJ.

21 Jan 2008

Calcium and vitamin D is more effective than calcium alone in preventing bone loss in elderly women

Previous studies have shown that high calcium intake can help prevent bone loss. This latest study, however, demonstrated that calcium therapy, although initially successful at preventing bone loss, was no different from placebo after three or five years.

18 Jan 2008

Gastric cancer survivors should be aware of osteoporosis

Gastric cancer is one of the most common cancers in the world. Although the prognosis of gastric cancer is known to be poor, the survival rate for those who receive operative treatment is increasing recently by virtue of early diagnosis and aggressive surgical intervention.

17 Jan 2008

Vitamin D2 supplements may help prevent falls among high-risk older women

Vitamin D2 supplements appear to reduce the risk of falls among women with a history of falling and low blood vitamin D levels living in sunny climates, especially during the winter, according to a report in the January 14 issue of Archives of Internal Medicine.

16 Jan 2008

Supercarrot to protect against bone diseases

American scientists have created a "supercarrot" which may protect against conditions such as brittle bone disease and osteoporosis.

16 Jan 2008

Calcium supplements may increase the risk of heart attacks for older women

Scientists in New Zealand say healthy post-menopausal women who take calcium supplements to maintain bone strength may be increasing their risk of heart attacks.

16 Jan 2008

How asthma and allergy symptoms are triggered

In demonstrating that a group of calcium ion channels play a crucial role in triggering inflammatory responses, researchers at Beth Israel Deaconess Medical Center (BIDMC) have not only solved a longstanding molecular mystery regarding the onset of asthma and allergy symptoms, but have also provided a fundamental discovery regarding the functioning of mast cells.

15 Jan 2008

A modified carrot for increased calcium absorption

A specially developed carrot has been produced to help people absorb more calcium.

15 Jan 2008

Potential new treatments for Huntington's disease

Working with fruit flies, researchers have discovered a new mechanism by which the abnormal protein in Huntington's disease causes neurodegeneration.

10 Jan 2008

Huntington's disease problem starts early

The damaging effects of the mutated protein involved in Huntington's disease take place earlier in cell life than previously believed, said researchers from Baylor College of Medicine in Houston in a report that appears in the current edition of the journal Neuron.

10 Jan 2008