The heady odor of yeast paste partially counteracts the life-lengthening effects of nutrient restriction on fruit flies - leading Baylor College of Medicine researchers to believe that the fly's perception that there is still food around may trigger a different metabolic state than one that exists when nutrients are limited.

Two novel treatments -- a basic compound found in every cell in the body and an extract of green tea -- may prevent brain damage caused from stroke, according to two studies in rats led by a researcher at the San Francisco VA Medical Center.