Question

Osteoporosis is a disease that affects the bones and leads to an increase in bone fractures. Osteoporosis is most likely to be affected by which cycle?
water
phosphorus
nitrogen
magnesium

Answer 1

Phosphorus

Bones are largely mineralized with calcium phosphate (hydroxyapatite). Disruptions in phosphate availability or the phosphorus cycle (and its balance with calcium and vitamin D) most directly affect bone mineral density and contribute to osteoporosis.