Vitamin D May Boost
Senior Muscle Function

Vitamin D, a nutrient best known for boosting bone health, may help muscles, too. That�s the conclusion of a recent study that found a link between high blood levels of the sunshine vitamin and better physical functioning in seniors.

Researchers from Wake Forest University recruited 2,788 people (average age of 75) for this investigation. Vitamin D levels were measured three times: When the study started, two years later and four years later. The participants also underwent a battery of tests including those for walking speed, balance and ability to rise easily from a chair.

The people with the highest levels of vitamin D showed the greatest ease of movement. In contrast, 90% of the people with the lowest test scores were found to be D deficient.

In her presentation before the Experimental Biology 2010 meeting in Anaheim, California, study lead author Denise Houston, PhD supported recent calls by the scientific community for an increase in the recommended daily intake for this crucial nutrient. �Current dietary recommendations are based primarily on vitamin D�s effects on bone health,� she said. �It is possible that higher amounts of vitamin D are needed for the preservation of muscle strength and physical function as well as other health conditions.�

The proposed increase in vitamin D intake is supported by a growing body of research into D�s many physiological functions. In addition to building strong bones and muscles, evidence suggests that vitamin D also plays a role in regulating blood pressure, keeping inflammation in check, regulating the immune system, supporting brain function and quelling chronic pain.