Cutting one of protein's building blocks by two-thirds let male mice live about 23% longer

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1. 1Cutting one of protein's building blocks by two-thirds let male mice live about 23% longer0:00
2. 2Cut valine by two-thirds on equal calories, and male mice lived about 23% longer0:12
3. 3The valine mice ate more and burned more, so the longer life wasn't hidden dieting0:38
4. 4The proposed engine: in the male liver, the same power plants each burned fuel harder0:59
5. 5The famous 'less protein, less growth' route went the wrong way here1:30
6. 6Male mice lived about 23% longer at the median, and the lifespan gain was males only2:01
7. 7The test that would matter for people: start the cut in adulthood, in genetically varied mice2:32
8. 8A longer, healthier life that didn't come from eating less, or from the famous less-protein route2:55