Does gravity affect osteoporosis?
My friend and I are having a dispute of, whether or not, gravity has its role in decreasing the height of a person with osteoporosis. Well, does gravity have a role, significant or insignificant, or not?
Answers:
To my recollection, it is not necessarily so much a matter of gravity as it is about resistance/stress/strain.
Astronanuts, I believe, are required to perform resistance workouts while in orbit, to prevent bone loss (and muscular atrophy), by being rubber-banded (sort of) down to tread mills and things like that.
Bones are constantly being torn down and rebuilt. The more strain that they are under, the thicker they rebuild.
Thus, being in a non-gravity situation (and not compensating with resistance workouts) leads to weakly rebuilt bones.
it affects ur a*s*s face
Well when we are walking, jogging, dancing, exercising, we're working against the gravitational force.
Osteoporosis occurs mostly in women after menopause because there is a drop of estrogen levels which tends to make the bones more fragile.
Yes it does. People in space get osteoporosis. Bones require stress to form correctly.
I imagine that gravity does tend to cause people to be somewhat shorter when their bones are less. I don't know if gravity causes shortness or if it is just because it is weaker.
Osteoporosis is demineralization of bone. Changes in hormones, lack of vitamin D, calcium and PTH (parathyroid hormone) are among the causes of this. Calcitonin , liver disease, kidney disease and stress can also affect bone mineralization. People who live in low gravity (or no gravity) environments will have bone mineralization problems. I also believe that the balance between osteoclastic and osteoblastic activity will significantly affect bone mineralization. If an adult grew up in a normal gravity environnment, but then lived many years in space, he will have demineralized bones (osteoporosis). However, because of lack of gravity, there may not be any decrease in height until they returned to earth or another environment that has significant gravity. It is when this person returns to a gravity environment that you will see compression fractures, and the effects of osteoporosis as it relates to height.
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Answers:
To my recollection, it is not necessarily so much a matter of gravity as it is about resistance/stress/strain.
Astronanuts, I believe, are required to perform resistance workouts while in orbit, to prevent bone loss (and muscular atrophy), by being rubber-banded (sort of) down to tread mills and things like that.
Bones are constantly being torn down and rebuilt. The more strain that they are under, the thicker they rebuild.
Thus, being in a non-gravity situation (and not compensating with resistance workouts) leads to weakly rebuilt bones.
it affects ur a*s*s face
Well when we are walking, jogging, dancing, exercising, we're working against the gravitational force.
Osteoporosis occurs mostly in women after menopause because there is a drop of estrogen levels which tends to make the bones more fragile.
Yes it does. People in space get osteoporosis. Bones require stress to form correctly.
I imagine that gravity does tend to cause people to be somewhat shorter when their bones are less. I don't know if gravity causes shortness or if it is just because it is weaker.
Osteoporosis is demineralization of bone. Changes in hormones, lack of vitamin D, calcium and PTH (parathyroid hormone) are among the causes of this. Calcitonin , liver disease, kidney disease and stress can also affect bone mineralization. People who live in low gravity (or no gravity) environments will have bone mineralization problems. I also believe that the balance between osteoclastic and osteoblastic activity will significantly affect bone mineralization. If an adult grew up in a normal gravity environnment, but then lived many years in space, he will have demineralized bones (osteoporosis). However, because of lack of gravity, there may not be any decrease in height until they returned to earth or another environment that has significant gravity. It is when this person returns to a gravity environment that you will see compression fractures, and the effects of osteoporosis as it relates to height.
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