The lifespan of a mouse is about two and a half years, and tumors begin to appear in mice at the age of one and a half. People live on average more than eighty years, and most tumors begin to appear after age fifty. In relative terms, that is a similar proportion of life. Therefore, we can reduce the risk of cancer and many other diseases by acting on the longevity program, and we now know that we can do this through diet.
