Can a person born on mars exist on earth.?

Question

The moons gravity is 25% that of earth. If a person is born on the moon, because the moon lacks earth gravity, it has been theorize that persons body would not be able to support its own organs. Mars has a gravity of 38%, how would that affect the person ability to survive in earths gravity.

Answer 1

Let's look at it this way.

Could a person born on Earth exist on a planet where they would weigh three times their normal weight?

Suppose you weigh 150 pounds on Earth.

What would happen to you if you suddenly weighed 450 pounds (without any additional muscle mass or any time to adapt)?

I doubt they could live very well, and would probably die young.

The heart would have to pump blood three times as hard.

The lungs would have to work 3 times as hard to get enough oxygen.

The internal organs, without strong internal supports, would sag and cause problems (possibly even tear away from other soft tissues).

The muscles would quickly become exhausted trying to support and move 3 times the weight.

The bones would likely over time bend and possibly snap.

Answer 2

Can your body improve it's performance by a factor of four? I've personally improved by a factor of three.  Over the course of a single summer, my biking speed to work tripled. But as drag goes up by the cube of your speed, this is an improvement of a factor of 27 in strength. I'm saying the adaptability is potentially huge.

One could improve one's chances by building a centrafuge to simulate higher gravity gradually. Exercise in that environment would also help.

People who had adapted to Mars over many generations would have a tougher time.