Featured series 
Tag: Aging
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Health
Researchers eye earliest triggers of age-related macular degeneration
Age-related macular degeneration is the leading cause of blindness for Americans over 60 years of age. It affects more than 14 million people. But how it attacks the macula, the center of the retina, is a controversial question. The macula is where the cones — the color and light sensing cells of the eye —…
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Health
Harvard scientists identify chromosome location of genes associated with long life
Scientists have long thought of aging as a complex process affected by perhaps a thousand genes. So a recent discovery by Harvard scientists that a gene or genes located on a region of human Chromosome 4 may help people to live to age 100 was something of a surprise. “This is the first study to…
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Health
Growth factor seen to reverse loss of muscle from aging, disease
Previous work by Nadia Rosenthal of Harvard Medical School and her colleagues showed that injection of a virus directing the expression of a molecule known as insulin-like growth factor I (IGF-I) into a skeletal muscle resulted in a much larger and stronger muscle. Now research described by Rosenthal and colleagues illustrates that the effect of…
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Health
First indications that aging may be regulated by brain
A little worm called Caenorhabditis elegans was the first creature to have all its genes sequenced, more than 19,000 of them. When the human genome was sequenced, researchers found that C. elegans shares about 40 percent of its genes with human beings. Two such genes — with potentially important consequences for humans — were recently…
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Health
Cognitive testing of elderly could help detect medical problems
Shari Bassuk, research fellow in the Department of Health and Social Behavior at the Harvard School of Public Health, and her colleagues have found that even mild impairments in areas such as memory and orientation were strongly predictive of mortality among people under the age of 80 years old. “There are major implications for these…