Effects of gravity on human body
Gravity also helps to regulate blood pressure, cardiovascular function, and other bodily organs. When humans go into space where there is less gravity, they experience muscle and bone loss, and loss of cardiovascular capacity.
Human body is effected by the gravity all the time. Gravitational force never gives up while pulling towards it. It doesn't discriminate between young and old. There are several parts of the body that are effected due to the gravitational force:
(i) Spine: A noticeable effect of gravity on the body can be observed as the spinal chord gets compressed. The spine contains sponge like discs which are pulled downwards due to the gravity and hence the discs lose moisture resulting in the person's height loss.
(ii) Organs: The organs begin to fall from their right positions inside our body over a period of time due to the gravitational force. To keep them back in to their proper positions, a repetitive head stand for a good amount of time would be necessary.
(iii) Circulation of blood: As the gravity can oppose the motion of water flow upwards, it can oppose the upward flow of blood in the body. Hence it causes, decrease in the blood circulation of scalp, the swollen limbs, eyes, brain, etc.
Over a period of time, these effects become predominant and unavoidable. The only way to escape these effects would be by reversing the body's position. This disables further compression of the organs.