translation.en: Well we think that insulin and IGF-1 hormones are hormones that are particularly active under favorable conditions -- in the good times -- when food is plentiful and there's not a lot of stress in the environment.
translation.zh: 胰岛素和IGF-1激素 是特别活跃 在有利条件下--好的时机下-- 当食物是充足的，没有很多压力的环境下