Question

which condition does exercising regularly reduce the risk of developing?
leukemia
osteoporosis
type i diabetes
multiple sclerosis

Explanation:

Regular physical activity helps in maintaining bone density. Osteoporosis is a condition where bones become weak and brittle. Weight - bearing exercises (like walking, running, etc.) stimulate bone formation and slow down bone loss. Leukemia is a cancer of the blood - forming tissues. Type I diabetes is an autoimmune disease where the body's immune system attacks the cells in the pancreas that make insulin. Multiple sclerosis is a disease of the central nervous system where the immune system attacks the protective covering of nerve fibers. There is no strong evidence that regular exercise directly reduces the risk of leukemia, type I diabetes, or multiple sclerosis in the same way it does for osteoporosis.

Answer:

osteoporosis