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.

Soymilk proves a popular option for lactose intolerant students

Offering soymilk to elementary school students boosts the number of children who select a calcium-rich beverage in the lunch line and reduces the amount of saturated fat consumed from calcium-rich beverages, according to a study in April's Journal of the American Dietetic Association.

16 Apr 2006

Statins may be able to play a role in preventing or slowing heart valve disease

Research to be published in the April 18 issue of the Journal of the American College of Cardiology provides the first explanation of an active rather than passive process that leads to heart valve degeneration, furthering a Northwestern researcher's effort to lead a paradigm shift in the medical community's beliefs about the cause of valve disease.

11 Apr 2006

Alcohol use, tobacco use and male gender associated with an earlier onset of colorectal cancer

Colorectal cancer is the second leading cause of cancer deaths, according to background information in the article. Screening asymptomatic patients is an important strategy for reducing these deaths, because by the time patients experience symptoms, the cancer may have progressed beyond the point where it can be cured.

11 Apr 2006

Early intervention is a critical consideration in efforts to preserve the musculoskeletal system after spinal cord injury

Richard Shields, Ph.D., University of Iowa professor in the Graduate Program in Physical Therapy and Rehabilitation Science, can foresee a time when it might be possible to cure spinal cord injury (SCI).

7 Apr 2006

More than a billion may suffer from vitamin D deficiency

More than a billion may suffer from vitamin D deficiency. Consequences may be more severe than thought. Prominent clinician calls for action.

6 Apr 2006

Folic acid may be added to all bread in Britain

The Food Standards Agency in the UK is recommending the addition of the vitamin folic acid to all flour and bread on sale in Britain within the next year.

5 Apr 2006

Zinc's role in Alzheimer's disease

Zinc may be a familiar dietary supplement to millions of health-conscious people, but it remains a mystery metal to scientists who study zinc's role in Alzheimer's disease, stroke and other health problems.

23 Mar 2006

First evidence that dendritic cells show unprecedented sensitivity to thimerosal

A team of cell biologists, toxicologists and molecular bioscientists at UC Davis has published a study connecting thimerosal with disruptions in antigen-presenting cells known as dendritic cells obtained from mice.

22 Mar 2006

New research suggests it may be possible to separate the anticancer properties of vitamin D

At the right dose, vitamin D is important for bone development and may help protect against the development of several cancers, particularly colorectal cancer.

21 Mar 2006

53 percent more minimally-invasive procedures since 2000

Rest and relaxation seem like impossible feats to most Americans trying to balance the demands of family and career. This balancing act could account for the continued growth in minimally-invasive cosmetic plastic surgery procedures with 8.4 million performed in 2005.

20 Mar 2006

Coffee reduces risk of alcohol-induced pancreatitis

Pancreatitis is a condition in which the pancreas becomes inflamed, causing severe abdominal pain. It is often triggered by alcohol consumption which causes digestive enzymes to digest part of the pancreas.

15 Mar 2006

Researchers find viable new sources for stem cell transplants to the heart

Stem cell transplantation is among one of the most exciting and hotly debated areas of medical research today. While the promise of personalized medicine and effective treatments for debilitating diseases drive progress in this area, moral and ethical dilemmas about embryonic cells continues to cloud the field.

14 Mar 2006

Yale researchers identifiy a gene that protects the body against kidney stones

The research identifies a transporter, encoded by the gene, as a potential target for drugs to boost oxalate secretion in the gut and help prevent kidney stones, said Peter Aronson, M.D., professor of internal medicine and physiology and senior author of the research.

14 Mar 2006

Liverpool scientists discover how coffee can reduce the risk of alcohol-induced pancreatitis

13 Mar 2006

Stroke researchers have traced the major cause of the death of brain cells

In the neurological train wreck that is stroke, researchers have traced the major cause of the death of brain cells due to artery blockage or bleeding in the brain.

13 Mar 2006

Menthol discovery could point towards new pain therapies

This new understanding could lead to potential advances in pain therapy, the researchers said. Moreover, the scientists envision that their method may be potentially useful in studying the activation mechanism of other drugs and proteins.

13 Mar 2006

Diabetics shown to have increased heart muscle mass

Diabetes strongly increases the risk of heart failure in all ethnic groups, but early effects of diabetes on the heart may differ depending on whether the subjects are white, African-American, Hispanic or Chinese.

9 Mar 2006

Cornell develops technique for making living, functional cells glow

The development gives researchers insights into how hearts develop in living mouse embryos and could improve our understanding of irregular heartbeats, known as arrhythmias, as well as open doors to observing cellular processes to better understand basic physiology and disease.

9 Mar 2006

Researchers discover cause of episodic ataxia type-2

Researchers at the Albert Einstein College of Medicine of Yeshiva University have discovered the underlying cause of a type of ataxia, hereditary disorders characterized by poor balance, loss of posture and difficulty performing rapid coordinated movement.

7 Mar 2006

Ethnicity the most important personal characteristic in predicting complementary medicine use

A survey of older adults in rural North Carolina shows that they widely use complementary medicine therapies, but tend to focus on folk or home remedies, such as taking a daily "tonic" of vinegar or using Epsom salts.

1 Mar 2006