How would living with a lower gravity affect health negatively?

Question

Specifically if you never go back to regular gravity. Ex: you go to live on another planet with say 3/4 Earth’s gravity and never return to Earth.

In: 2

Answer 1

Assuming you take a living thing from Earth and move it somewhere with lesser gravity…
– … the muscles and bones are no longer exercised by gravity and will atrophy
– … blood and other fluids will no longer flow properly as the circulatory systems account for gravity
– … the heart, no longer affected by gravity, will change shape to a more oval form and suffer more frequent faults

The Soviet Union’s space experiments have shown that these effects are mitigated by increased exercise, allowing astronauts to withstand microgravity for about a year.