Life Extension

Increased life expectancy in the United States has not been accompanied by more years of perfect health, reveals new research published in the December issue of the Journal of Gerontology. Indeed, a 20-year-old today can expect to live one less healthy year over his or her lifespan than a 20-year-old a decade ago, even though life expectancy has grown.

While simple falls, such as slipping while walking off a curb, may seem relatively harmless, they can actually lead to severe injury and death in elderly individuals, according to a new study published in The Journal of Trauma: Injury, Infection, and Critical Care.

Impairments to health and physical performance are not primarily a result of aging but of unfavorable lifestyle habits and lack of exercise. This is the position taken by Dieter Leyk and his coauthors in the new issue of Deutsches Ärzteblatt International.

The discovery by UCLA biochemists of a new method for preventing oxidation in the essential fatty acids of cell membranes could lead to a new class of more effective nutritional supplements and potentially help combat neurodegenerative disorders such as Parkinson's disease and perhaps Alzheimer's.

The discovery by UCLA biochemists of a new method for preventing oxidation in the essential fatty acids of cell membranes could lead to a new class of more effective nutritional supplements and potentially help combat neurodegenerative disorders such as Parkinson's disease and perhaps Alzheimer's.

If you think life's too short, then you're not alone. A team of scientists set out to find what it would take to live a very long life and they made important discoveries that bring longer life spans much closer to reality. A new research report featured on the cover of The FASEB Journal, describes how scientists "activated" life extension in the roundworm C. elegans, and in the process discovered a new metabolic state correlating with long life.

For decades, scientists have been searching for the fundamental biological secrets of how eating less extends lifespan. It has been well documented in species ranging from spiders to monkeys that a diet with consistently fewer calories can dramatically slow the process of aging and improve health in old age.

Yoga has a greater positive effect on a person's mood and anxiety level than walking and other forms of exercise, which may be due to higher levels of the brain chemical GABA according to an article in The Journal of Alternative and Complementary Medicine, a peer-reviewed journal published by Mary Ann Liebert, Inc. The article is available free online.

Older people who are leading active, healthy lifestyles often have silent vascular disease that can be seen on brain scans that affect their ability to think, according to a new study led by UC Davis researchers and published online in the Archives of Neurology, one of the JAMA Archives journals.

In the largest study to date of the Arthritis Foundation's Tai Chi program, participants showed improvement in pain, fatigue, stiffness and sense of well-being. Their ability to reach while maintaining balance also improved, said Leigh Callahan, PhD, the study's lead author, associate professor in the University of North Carolina at Chapel Hill School of Medicine and a member of UNC's Thurston Arthritis Research Center.

In a study examining the factors that play a role in an older adult's transition to disability, intervening illnesses and injuries that led to hospitalization or activity restriction were associated with worsening functional ability, especially among those who were physically frail, according to a report in the November 3 issue of JAMA, a theme issue on aging.

Researchers at Karolinska Institutet have shown that they may be able to monitor the aging process in the brain, by using MRI technique to measure the brain lactic acid levels. Their findings suggest that the lactate levels increase in advance of other aging symptoms, and therefore could be used as an indicator of aging and age-related diseases of the central nervous system.