Ageing whether in animals or humans is not a fixed process. Looking at American possums on islands versus the mainland, they are ageing at different speeds leading to the conclusion that safer environments increase longevity. With animal insights guiding medical research, we may see humans live up to 150 years old. Medical progress has been growing tremendously including blood rejuvenation which may lead to additional years of life that we never thought would be possible.

https://thelongevityforum.com