Both humans and mice that manage to live to a ripe, old age show a clear change in their glucose metabolism, but it's unclear whether this change alone can increase lifespan. Using a mouse model of longevity scientists report that changes in metabolism can indeed increase longevity. They demonstrated that long-lived Snell dwarf mice burn less glucose and more fatty acids during periods of fasting, and as a result produce fewer free radicals.
(www.americanheart.org)

Labels: free radicals, glucose metabolism, lifespan