# Have there been any studies on the health impacts of prolonged high G?

If you are flying to Mars or elsewhere, and you want to use a centrifuge to 'make 1G' to keep the passengers healthy, why not increase it (slowly) so they are actually at 2G's? Seems like this would make the passengers stronger.

Does higher gravity = more healthy?

• Mass constraints is a reason not to. Doubling the radius of a spin hab makes it more massive. Also puts more pascals on the spokes which means a sturdier structure is necessary. It may be that less than a g can keep the astronauts healthy. To get the astronauts used to Mars gravity, that's what I'd set the spin hab for Mars bound astronauts. Commented Sep 25, 2015 at 16:09
• @HopDavid good points, but why not just spin the hab faster rather then make it bigger? Commented Sep 25, 2015 at 16:13
• There's some controversy to how many rpm's humans can work comfortably in. DiZio and others seem to believe we can get used to 4 or 5 rpm's. Artificial gravity is $\omega^2r$ so doubling angular velocity gives us 4 times as much weight. But while ramping up $\omega$ may cut needed radius, more newtons still means more massive structure. Commented Sep 25, 2015 at 22:09