Effects of Gravity?

Question

What kind of effects would less gravity have on the human body?

Answer 1

It tends to mess with the immune system because it interferes with bone marrow and white blood cell production. Some bodily processes depend on gravity. The musculature also suffers because one you come back to normal Earth gravity after a long time in a zero G environment you find that your muscles have to some extent deteriorated.

Answer 2

The effects of reduced gravity (say by 25%) would be much less severe than zero gravity. You would experience a certain amount of joint relief and overall height growth. I think that an active person would only be able to do more amazing things with less gravity and doing those things would keep you in shape. As long as there is enough gravity to do some high impact exercise or find something difficult to pick up, etc. a person should stay in shape and his/her bones should stay strong. Running a marathon would not likely be as difficult, but running it faster would. I'd say there would be no problem getting a cardio workout. I'd say the main thing you would have to change is what your idea of hard work is. Change your morning 15min jog to a 15min sprint. Instead of 5 guys carrying a piano, use 3. I bet a minor loss of gravity would be a net gain in health for us. Systems in the body would not break down as fast.

Answer 3

The initial effect of weightlessness is generally called "space sickness", and is simply a form of motion sickness. Your eyes see a definite room with a "floor" and "ceiling", but your brain doesn't sense a corresponding gravitational pull. Hence, it gets disoriented as it would on a rocking ship.

Moderate exposure to microgravity, such as over a few weeks or a month, simply produces difficulty functioning upon return to a gravity environment.

Extreme exposure to zero-g produces significant health risks for astronauts, and is a serious concern for anyone planning an interplanetary mission. Symptoms include muscular atrophy and loss of bone mass; these can be combated with a regular exercise regimen during the flight. More serious concerns include a slow cardiovascular system, a reduced red blood cell count, and a weakened immune system.

All symptoms will be reversed after a stay in a gravity field, but present a serious risk during the mission.

Answer 4

If an astronaut stays in space for 6 months, his height will increase by 5%. After 1 year, his height will increase by 10%. Similarly, the friction in between the bone joints will decrease and the bones will start to erode.

Answer 5

If we had slightly less gravity, I'd say we'd be slightly taller and weaker in bones and muscles. We'd probably have much less back pain and knee pain, but perhaps the weakness would keep us having the same exact problems.

Answer 6

Zero Gravity when arching out from a climb in a plane or rocket

Answer 7

I might still be able to furnish my photo when visiting Yahoo Personals because one ages less - less gravity - and one appears younger because gravity is not tending to pull down the features - that is all I meant - - -

Answer 8

Well you will lose some of mussel mass.And you will live longer(just a bit) as time slows down when gravity is stronger.

Answer 9

Bone, muscle, and heart atrophy.

Not good once coming back to Earth

Answer 10

Plastic surgery
would decline very
rapidly!