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.

Researchers find that healthy, younger adults could be at risk for heart disease

Even younger adults who have few short-term risk factors for heart disease may have a higher risk of developing heart disease over their lifetimes, according to new findings by a UT Southwestern Medical Center researcher.

12 Jan 2009

Protein that regulates hormones critical to women's health found in pituitary

University of Wisconsin-Madison researchers have solved the mystery surrounding a "rogue protein" that plays a role in the release of neurotransmitters and hormones in the brain.

12 Jan 2009

New Benzothiazepine test will catch sports cheats

Avoiding detection just got harder for drug cheats who try to use a particular range of untested, but potentially enhancing, compounds.

7 Jan 2009

Young adults eating on the run - need to make more time for healthy meals

As adolescents mature into young adults, increasing time constraints due to school or work can begin to impact eating habits in a negative way.

6 Jan 2009

Novel compound F15845 shows promise for angina

A compound designed to prevent chest pains in heart patients has shown promising results in animal studies, say scientists.

6 Jan 2009

New bone and tissue regeneration technique

Using stem cell lines not typically combined, researchers at Columbia University Medical Center have designed a new way to "grow" bone and other tissues.

15 Dec 2008

Planned safety analysis of a breast cancer prevention study reveals encouraging news for Exemestane

An interim analysis of a breast cancer prevention study using exemestane (Aromasin) finds an "acceptable" level of bone loss.

14 Dec 2008

Potential new avenue for altering lung development in the embryo - will help premature babies

Scientists funded by the Biotechnology and Biological Sciences Research Council (BBSRC) have identified a potential new avenue for altering lung development in the embryo which may help to improve the outcome for very premature babies.

14 Dec 2008

Discovery of gene mutation that appears to help prevent heart disease

Researchers at the University of Maryland School of Medicine in Baltimore have discovered a novel gene mutation among the Old Order Amish population that significantly reduces the level of triglycerides in the blood and appears to help prevent cardiovascular disease.

12 Dec 2008

Timothy syndrome provides clues about enzyme role in arrhythmias

A University of Iowa study provides insight into a calcium-sensing enzyme already known to play a role in irregular heartbeats and other critical functions.

12 Dec 2008

Estrogen therapy can help control metastatic breast cancer

For breast cancer survivors, the idea of taking estrogen pills is almost a taboo. In fact, their doctors give them drugs to get rid of the hormone because it can fuel the growth of breast cancer.

12 Dec 2008

High phosphorus levels in blood linked to coronary calcification in chronic kidney disease

For patients with moderate chronic kidney disease (CKD), higher levels of phosphorus in the blood are associated with increased calcification of the major arteries and heart valves - which may contribute to the increased risk of cardiovascular disease in patients with CKD, reports a study in the Journal of the American Society of Nephrology (JASN).

10 Dec 2008

Nuts and Mediterranean diet appear to help metabolic syndrome

A traditional Mediterranean diet with an additional daily serving of mixed nuts appears to be useful for managing some metabolic abnormalities in older adults at high risk for heart disease, according to a report in the December 8/22 issue of Archives of Internal Medicine.

8 Dec 2008

New method of producing synthetic bone

A method of producing synthetic bone, using techniques normally used to make catalytic converters for cars, is being developed by researchers at WMG at the University of Warwick.

5 Dec 2008

Extraordinary immune cells may hold the key to managing HIV

People who manage to control HIV on their own are providing scientists with valuable information about how the immune system eliminates virus-infected cells.

5 Dec 2008

ACE inhibitor calcium channel blocker combo drug shown to reduces heart attacks

While doctors are urged to start with a diuretic-based strategy to control patients' high blood pressure, an international blood pressure study shows a different single-pill drug combination is more effective at preventing heart-related events such as heart attacks and strokes.

3 Dec 2008

More alkaline diet strengthens skeletal health

Diets that are high in protein and cereal grains produce an excess of acid in the body which may increase calcium excretion and weaken bones, according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

3 Dec 2008

Men who survive childhood leukemia have lower bone mineral density

Men who survived childhood leukemia treatment into adulthood were more likely to have low bone mineral density than other adults their age, putting them at risk of osteoporosis and bone fractures, according to a new study.

3 Dec 2008

Generics as good as brand-name drugs when treating heart diseases

Contrary to the perception of some patients and physicians, there is no evidence that brand-name drugs are clinically superior to their generic counterparts, according to an article in the December 3 issue of JAMA, which examined studies comparing the effectiveness of generic vs. brand-name drugs for treating cardiovascular diseases.

3 Dec 2008