Magnesium in diet could lead to stronger bones- research

22/12/05 Intake of magnesium through diet and supplements is positively associated with bone density throughout the whole body, particularly in older white adults, according to research published in the Journal of the American Geriatrics Society. Researchers say the effects are similar to that of calcium.

Over 2,000 black and white men and women ages 70-79 years old were asked to complete a questionnaire to determine how much magnesium they were receiving from food and various supplements. Additionally, researchers performed bone mineral density tests on the participants.

The study revealed that those who ingested more magnesium had significantly higher bone density than those who got the least amount of magnesium. For every 100 milligram per day increase in magnesium intake, data showed a 1% increase in bone density.

However, this link was only true for the older white men and women. Previous research has demonstrated that black men and women may process vitamin D and other calcium regulating hormones differently than whites, thus possibly explaining the lack of association between magnesium and bone density among them in this study.

"Although this [1% increase] seems small, increases across a population may have large public health impact," states lead researcher Kathryn M. Ryder.

The recommended daily allowance of magnesium is 320 mg/day for women and 420/mg day for men in this age group. Most people in this age group get far less than this daily amount.

This study is published in the Journal of the American Geriatrics Society.

The Journal of the American Geriatrics Society publishes articles that are relevant in the broadest terms to the clinical care of older persons. Such articles may span a variety of disciplines and fields and may be of immediate, intermediate, or long-term potential benefit to clinical practice.

The American Geriatrics Society (AGS) is the premier professional organization of health care providers dedicated to improving the health and well-being of all older adults. With an active membership of over 6,000 health care professionals, the AGS has a long history of effecting change in the provision of health care for older adults. In the last decade, the Society has become a pivotal force in shaping attitudes, policies and practices regarding health care for older people.

Blackwell Publishing is the world's leading society publisher, partnering with more than 600 academic and professional societies. Blackwell publishes over 750 journals annually and, to date has published close to 6,000 text and reference books, across a wide range of academic, medical, and professional subjects.

http://www.eurekalert.org/pub_releases/2005-12/bpl-miy122105.php