A malaria drug made aged female rats live longer — and they also ate about 10% less.

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1. 1A malaria drug made aged female rats live longer — and they also ate about 10% less.0:00
2. 2The chloroquine-treated rats outlived the untreated ones.0:14
3. 3Chloroquine jams the cell's recycling — the opposite of how longevity drugs usually work.0:36
4. 4For most of the study, the treated rats ate about 10–12% less food.0:57
5. 5One longer life, two possible causes — the drug and the smaller meals, tangled in the same rats.1:29
6. 6The two numbers, side by side: maximum lifespan +19%, and daily calories about −10%.2:00
7. 7One extra group of rats — fed the same smaller ration, no drug — would settle it.2:31
8. 8Was it the drug, or the smaller meals? Not yet answered.2:58