Scientists have tested rapamycin in older people, but only to see if it helps the immune system fight infections. These studies look good, but they don't prove that rapamycin can help people live...

A drug called rapamycin helped mice live longer - males lived about 9% longer and females lived about 14% longer when they started taking the drug in late adulthood.

Scientists gave mice a drug called rapamycin when they were middle-aged (around 270 days old) and found that both male and female mice lived longer compared to mice that didn't get the drug.

Giving mice the drug rapamycin makes them live longer, but not because it stops particular diseases. Instead, it seems to slow down the basic aging process itself.

Scientists gave middle-aged mice a drug called rapamycin for just 3 months and found it changed their gut bacteria, lowered cancer risk signs, and helped them live longer - proving you don't need long treatment to see benefits.

Taking rapamycin, even in small doses now and then, might increase the chance of getting serious infections like pneumonia in older people because it can weaken the immune system.