We have machines to get things that are out of reach so no
Its the steroids pumped into the animals we raise and eat! =) lol
You have good questions
i do not think so
Taller and fatter.
I'm 6'5" and my back is fine. My brother-in-law is 6'9" and his heart is fine. The average height has been increasing since after the Great Depression. My wife is 5'11". She is a doctor and finds some of your statements to be off and very misleading.
Being tall doesn't pose as many health risks as being fat.
why? because you're not?