Can long-term walking lead to the disappearance of two types of diseases? Doctor: Doing so after the age of 50 reduces the risk of illness

Can long-term walking lead to the disappearance of two types of diseases? Doctor: Doing so after the age of 50 reduces the risk of illness

Grandma Bai used to be a professional nurse when she was young, working in the hospital for over 40 years. She had to stand and walk for long periods of time every day...