Why do some elderly people pass away within a few years after reaching the age of 70? These four major reasons are indispensable

Why do some elderly people pass away within a few years after reaching the age of 70? These four major reasons are indispensable

Ah!I feel like I'm almost reaching the limit. I hope to pass away safely and not burden my son and daughter Grandma Liu is talking to her good friend Aunt Li in the park...