"Until then, it's all just (un)educated guesses. " We know that long time weightlessness causes damage, so 38% of earths gravity will likely have some bad effe

"Until then, it's all just (un)educated guesses. " We know that long time weightlessness causes damage, so 38% of earths gravity will likely have some bad effect, too. This is not just wildly speculating. But yes, for finding out, whether humans still can bear it, we will have to find out and there is no shortage of volunteers.