Eat less and live longer. The suggestion was repeated last week by a trio of University of Minnesota physiologists—without any prompting from Washington. They'd been at the mice again.
Minnesota's famed Professor Maurice B. Visscher and two colleagues had suspected for some time that moderate hunger, the usual state of most of the animal kingdom, might be a pretty healthy thing. In their mouse experiments, begun several years ago, they divided 144 newborn female mice into two groups. One group got all it could eat. The second group got two-thirds as many calories as the first (i.e., a full ration of proteins...
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