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.

Important link between kidney damage and cardiac problems

Scientists have identified an important link between kidney damage and cardiac problems, creating new possibilities for treating the primary cause of death in kidney disease patients.

29 Mar 2005

Researchers have identified the proteins that allow specific brain cells to "change channels"

Johns Hopkins researchers have identified the proteins that allow specific brain cells to "change channels," a rare ability that tweaks what can come into the cell. The findings, described in the March 24 issue of Neuron, might let researchers harness the process, perhaps one day using it to protect cells that die in Lou Gehrig's disease.

28 Mar 2005

Promising results reported for HIV patients suffering from facial wasting

Physicians from leading plastic surgery and dermatology practices report positive results from HIV patients participating in a clinical trial of Radiesse synthetic injectable implant on facial wasting. The trial is intended to demonstrate the safety and effectiveness of this widely used tissue augmentation therapy as a treatment for the facial changes that socially stigmatize many HIV-infected patients.

23 Mar 2005

Calcium crucial to benefits of osteoporosis drugs

Although an increasing number of people are taking powerful new prescription drugs to treat osteoporosis, chances are the majority of patients are not getting the greatest effect from these medicines because they do not have an adequate calcium and vitamin D intake, according to a paper published in the March 2005 issue of The Journal of Women's Health.

23 Mar 2005

Sports drinks can damage teeth

While sports and energy drinks help athletes re-hydrate after a long workout, if consumed on a regular basis they can damage teeth.

21 Mar 2005

Questions about validity of HOPE TOO vitamin E study

A study published in the March 16 issue of Journal of the American Medical Association (JAMA) suggesting that a "daily-dose" of vitamin E (400 international units) among high-risk (chronically ill) cardiovascular patient populations is associated with a greater risk of heart failure is being challenged by leading health researchers around the country who claim the study lacks the adequate research and controlled sampling audience to justify this conclusion.

16 Mar 2005

Nature of electrical abnormalities occurring during the development of heart failure

A Johns Hopkins undergraduate student has contributed to new research showing that electrical changes in the heart leading to heart failure can occur long before a patient exhibits any clinical symptoms.

8 Mar 2005

Lipitor patients who reduced 'bad' cholesterol show decrease in heart attack and stroke

Patients with coronary heart disease who took Pfizer's cholesterol-lowering medicine Lipitor (atorvastatin calcium) and lowered their cholesterol to well below recommended levels experienced significantly fewer heart attacks and strokes than those who only lowered their cholesterol to recommended levels

8 Mar 2005

Blood pressure treatment could cut risk of strokes and heart attacks

A new treatment strategy for hypertension can cut the risk of strokes by around 25 percent and coronary events by around 15 percent according to the preliminary results of a major international trial announced at the American College of Cardiology Late Breaking Clinical Trials II Meeting in Orlando today.

8 Mar 2005

Pilot study looks at healthy bone development in teenage mothers

Researchers in The University of Manchester's School of Medicine are undertaking a pilot study into the healthy bone development of teenage mothers, as part of an ongoing commitment to supporting the health of young families.

From The University of Manchester 7 Mar 2005

Drinking more milk might not mean children develop healthier bones

The US Government's increased recommendations for increased daily calcium intake, largely from dairy products, to between 800 and 1,300 milligrams to promote healthy bones and prevent osteoporosis is being queried.

7 Mar 2005

American teenagers are in a calcium crisis

American teenagers are in a calcium crisis, the milk and milk products they need to help form healthy bone is often missing from their diet; about 15 percent of adult height is added at this time and half of all bone is formed March, National Nutrition Month®, the time when health professionals encourage all of us to look at what we eat and make informed food choices, is even more important for kids and teens who are still growing.

7 Mar 2005

America's youth are in a calcium crisis - they need more milk and milk products more often

March is National Nutrition Month, the time when dietitians and other health professionals encourage all of us to pay attention to what we eat. This annual call to action to make informed food choices is even more important for growing kids and teens.

7 Mar 2005

FDA issues information on the risks and benefits of Crestor

The U.S. Food and Drug Administration (FDA), today issued public health advice, patient information, and professional healthcare information on the risks and benefits of Crestor (Rosuvastatin calcium), a cholesterol-lowering drug.

2 Mar 2005

Nose cells provide a window into the brain

In the first study to examine living nerve cells from patients with psychiatric disease, scientists from the Monell Chemical Senses Center, the University of Pennsylvania, and collaborating institutions report altered nerve cell function in olfactory receptor neurons from patients with bipolar disorder.

1 Mar 2005

Intravenous vitamin D appears to significantly improve the survival of patients on dialysis

The administration of intravenous vitamin D appears to significantly improve the survival of patients on dialysis, according to a study that will be published in the April Journal of the American Society of Nephrology.

28 Feb 2005

$Women who need treatment for osteoporosis may not be receiving it because their history of fractures not being considered$

Women who need treatment for osteoporosis may not be receiving it because their history of fractures not being considered

Previous fractures indicate that bones are weaker than normal, but the information isn't being taken into account when treating for osteoporosis, said Dr. Kerry Siminoski, professor of radiology and diagnostic imaging at the University of Alberta.

27 Feb 2005

Lack of magnesium in diet linked to disease

The Gordon Research International Conference on Magnesium was held during the second week in February in Ventura, California, to discuss the research findings on the links between deficiencies in the mineral magnesium and a host of life-threatening diseases, including heart disease and arteriosclerosis.

22 Feb 2005

Dietary protein and bone health revisited

Agricultural Research Service (ARS) scientists first compared high-meat protein diets with low-meat protein diets. Now, they've compared animal-protein diets with vegetable-protein diets. This "sequel" study rocks the foundation, again, of a commonly held belief that high-protein diets can be bad for bones.

22 Feb 2005

Calcium added to many soy beverages settles to the bottom of the container

A new study published today in Nutrition Today finds naturally calcium-rich milk is the most reliable source of this bone-building nutrient, superior to calcium-fortified soy and rice beverages and many orange juice brands.

14 Feb 2005