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.

Diuretic drug works best at reducing risk of heart failure in hypertension

New research supports the findings of a landmark drug comparison study published in 2002 in which a diuretic drug or "water pill" outperformed other medications for high blood pressure. A scientific team including investigators from The University of Texas Health Science Center at Houston reports the findings in the May 11 issue of the Archives of Internal Medicine.

13 May 2009

DHEA supplement combined with vitamin D and calcium significantly improves spinal bone density in older women

"The results of our study are very promising. Similar studies have demonstrated much smaller benefits for bone than we found. However, calcium and vitamin D deficiencies, which are present in half of older adults, may have prevented DHEA from improving bone density in the earlier studies," said Edward Weiss, Ph.D., associate professor of nutrition and dietetics at Saint Louis University's Doisy College of Health Sciences and lead author of the study.

12 May 2009

DASH diet to lower blood pressure also reduces women's risk of heart failure

The DASH diet was initially developed to help patients lower their blood pressure, but a large study led by investigators at Beth Israel Deaconess Medical Center (BIDMC) demonstrates that women who followed the diet also significantly reduced their risk of developing heart failure.

12 May 2009

New tissue scaffold stimulates bone and cartilage growth

MIT engineers and colleagues have built a new tissue scaffold that can stimulate bone and cartilage growth when transplanted into the knees and other joints.

12 May 2009

New genetic clues to treatment of hypertension

An international research team has identified a number of unsuspected genetic variants associated with systolic blood pressure (SBP), diastolic blood pressure (DBP), and hypertension (high blood pressure), suggesting potential avenues of investigation for the prevention or treatment of hypertension.

12 May 2009

Cell's split personality is a major discovery into neurological diseases

Researchers at the Université de Montreal (UdeM) and the Montreal Neurological Institute (MNI), McGill University have discovered that cells which normally support nerve cell (neuron) survival also play an active and major role in the death of neurons in the eye.

7 May 2009

Kidney disease patients reap rewards of prevention

Making sure you see your doctor and have tests run on a regular basis can prevent serious complications of chronic kidney disease (CKD), according to a study appearing in an upcoming issue of the Journal of the American Society Nephrology (JASN).

7 May 2009

Drugs designed to tackle endoplasmic reticulum stress might be useful in treating heart disease

Researchers say they have evidence to explain what separates your average blood vessel plaque from those that are at high risk for triggering the development of dangerous - even fatal - blood clots.

5 May 2009

Call for mothers to address bone health with daughters

Of all the gifts that generations of women have passed on to their loved ones, one of the most important is the gift of knowledge about health - especially information about bone health and osteoporosis.

3 May 2009

Recent initiatives in global health make progress against child deaths

Recent initiatives in global health have made significant advances in knowledge, prevention and reduction of diseases affecting children in low-income countries.

3 May 2009

Many patients in intensive care are deficient in vitamin D

Australian researchers have discovered that many critically ill patients in intensive care are deficient in vitamin D.

30 Apr 2009

Dairy better for bones than calcium carbonate

A Purdue University study shows dairy has an advantage over calcium carbonate in promoting bone growth and strength.

30 Apr 2009

A negative mGluR5 allosteric modulator shows efficacy in treating acute migraine attacks

When migraine strikes, because of severe pain, often accompanied by nausea and sensitivity to light and sound, sufferers are effectively disabled for up to 72 hours.

30 Apr 2009

New idea for Parkinson's treatment

In a study that reveals the clearest picture to date of neuron death in Parkinson's disease, researchers at Columbia University Medical Center have found that a trio of culprits acting in concert is responsible for killing the brain cells.

29 Apr 2009

Contamination of seeds for alfalfa sprouts linked to salmonella

The U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) have recommended that consumers not eat raw alfalfa sprouts, including sprout blends containing alfalfa sprouts, until further notice because the product has been linked to Salmonella serotype Saintpaul contamination.

26 Apr 2009

Patients with stone disease could benefit from drinking diet soda

New research from the University of California, San Francisco suggests that the citrate and malate content in commonly consumed sodas may be sufficient to inhibit the development of calcium stones. The study was presented at the 104th Annual Scientific Meeting of the American Urological Association (AUA).

26 Apr 2009