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.

Diet low in fat and red meat and high in fruit and veg helps prevent prostate cancer

A new review published in the Journal of Human Nutrition and Dietetics assessed whether certain modifications in diet have a beneficial effect on the prevention of prostate cancer.

3 Jun 2009

FDA approves Reclast (zoledronic acid) for osteoporosis in postmenopausal women

Reclast (zoledronic acid) Injection has been approved by the US Food and Drug Administration (FDA) as the first and only therapy to prevent postmenopausal osteoporosis for two years with a single dose. Reclast is already approved as a once-yearly infusion for the treatment of postmenopausal osteoporosis.

1 Jun 2009

$Vitamin D and Calcium supplements help prevent bone fracture in the elderly$

Vitamin D and Calcium supplements help prevent bone fracture in the elderly

We all know that vitamin D and calcium are good for bones, but research teams in Europe and USA have shown that both taken daily reduces the rate of hip fracture in older people by 20%.

27 May 2009

Research suggests role of low vitamin D in cancer

In studying the preventive effects of vitamin D, researchers at the Moores Cancer Center at the University of California, San Diego, have proposed a new model of cancer development that hinges on a loss of cancer cells' ability to stick together. The model, dubbed DINOMIT, differs substantially from the current model of cancer development, which suggests genetic mutations as the earliest driving forces behind cancer.

22 May 2009

Blood pressure lowering drugs should be offered to anyone old enough to be at risk of a heart attack or stroke

Blood pressure lowering drugs should be offered to anyone old enough to be at risk of a heart attack or stroke (or who is otherwise known to be at risk), regardless of their blood pressure, according to the largest analysis of blood pressure trials to date, published on bmj.com today.

19 May 2009

Autism discovery may explain why disorder strikes boys four times more than girls

UCLA scientists have discovered a variant of a gene called CACNA1G that may increase a child's risk of developing autism, particularly in boys. The journal Molecular Psychiatry publishes the findings in its May 19 advance online edition.

19 May 2009

Soft and tough like biological tissue: DNA-wrapped carbon nanotubes

For modern implants and the growth of artificial tissue and organs, it is important to generate materials with characteristics that closely emulate nature.

17 May 2009

Catheter ablation effective for atrial fibrillation

Treating a common heart rhythm disorder by burning heart tissue with a catheter works dramatically better than drug treatments, a major international study has found.

15 May 2009

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