I'm ignorant on the matter, but "vastly" seems a bit too much, given that a good chunk of medicine applies to both. They are different, no doubt, but not the difference between a human and a crab.

5 years life expectancy difference is a lot. As a man, it is frustrating and I want to make sure I get the most out of my life (which I enjoy)

That’s not the only reason. Men are treated differently to women in healthcare.

There is no shortage of data on this. Here is one example: https://www.healthdata.org/news-events/newsroom/news-release...