SelfHacked published an article by Puya Yazdi, MD in September 2020 about mTOR and natural mTOR inhibitors and activators. mTOR responds to signals from nutrients, growth factors and cellular energy status and controls cell growth and proliferation based on regulating protein syntheses. mTOR is one of those things that’s good to have cycled. Sometimes we want to increase it to grow muscle and improve certain aspects of cognition, while the rest of the time we want to have low levels to increase longevity, decrease the risk of cancer, and reduce inflammation. Too much mTOR activation is associated with many diseases including neurodegeneration. There are mTOR inhibitors mainly used as immunosuppressants to prevent transplant rejection and in anticancer therapy and strategies such as ketogenic diets. mTOR activators include a variety of amino acids and the hormone insulin as well as proteins, excess carbs, Orexin, and more. For health and longevity, we’d want systemic mTOR levels to be low most of the time, with occasional periods of activation. Research suggests it’s preferable to have mTOR more active in your brain and muscles rather than in your fat cells and liver. Exercise is ideal because it does exactly this.