Rapamycin is a drug originally discovered in the soil of Easter Island, known for its antifungal properties. It is primarily used as an immunosuppressant to prevent organ transplant rejection and to treat certain types of cancer. By inhibiting a protein called mTOR, it helps regulate cell growth and metabolism. In addition to its medical uses, Rapamycin has gained attention in research related to aging and longevity. Studies suggest that it may extend lifespan in various organisms by mimicking the effects of caloric restriction. However, more research is needed to fully understand its potential benefits and risks in humans.