Association between thyroid function and osteopenia or osteoporosis: a cross-sectional study in China

Area of Science:

• Endocrinology
• Bone Metabolism
• Gerontology

Background:

• Thyroid dysfunction is linked to bone health, but its specific association with osteopenia requires further clarification.
• Understanding these relationships is crucial for managing bone health in diverse populations.

Purpose of the Study:

• To investigate the association between thyroid function and the risk of osteopenia and osteoporosis.
• To examine these associations across different age groups and sexes.

Main Methods:

• A cross-sectional study involving 4508 men and 1438 women.
• Bone mineral density (BMD) assessed via dual-energy X-ray absorptiometry.
• Logistic regression analysis used to determine the relationship between thyroid function and osteopenia/osteoporosis risk.

Main Results:

• In postmenopausal women, hyperthyroidism and advanced age increased osteopenia/osteoporosis risk; higher TSH levels were linked to lower osteopenia risk.
• In men over 50, hyperthyroidism and age correlated with increased osteoporosis risk; higher fT4 levels were inversely associated with osteopenia/osteoporosis risk.
• In men under 50, higher fT4 levels were linked to a reduced risk of low bone mass.

Conclusions:

• Thyroid-stimulating hormone (TSH) and free thyroxine (fT4) levels may play a role in bone health.
• The influence of thyroid function on bone density varies significantly with age and sex.
• Further research is warranted to elucidate the underlying mechanisms.