Rapamycin, the other big candidate, has one clear advantageover resveratrol: it's already FDA approved as a drug — but as animmunosuppressant.

雷帕霉素，另外一种抗衰老的重要健将，与白藜芦醇相比有一个非常明确的优点：雷帕霉素已经被美国食品药品管理局认可，但是是作为一种免疫抑制剂认可的。