Researchers have known for years that cutting animals’ food intake by about one-third extends the creatures’ life spans (SN: 3/15/97, p. 162: http://www.sciencenews.org/sn_arc97/3_15_97/bob1.htm).
Using DNA-coated glass chips, researchers have begun ferreting out the shifting genetic activity that accompanies this drastic dietary effect.
Investigators have now compared the 11,000 genes in the livers of mice eating freely with those in rodents on short-term and long-term diets.
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