What is a significant risk factor for osteoporosis in women?

• A. High levels of physical activity
• B. Low body mass index
• C. Regular calcium intake
• D. Frequent exercise

Answer: (B)

Low body mass index (BMI) is a significant risk factor for osteoporosis in women because a lower BMI often indicates lower bone mass and density. Women with a low BMI may have less bone mass available to support skeletal health, making them more susceptible to the loss of bone density over time. This can be particularly concerning in postmenopausal women, as hormonal changes further reduce bone density.

In contrast, high levels of physical activity and frequent exercise usually promote bone health rather than being risk factors for bone loss. Regular weight-bearing exercise can enhance bone strength and density. Similarly, regular calcium intake is critical for bone health; adequate calcium helps maintain bone mass and reduce the risk of osteoporosis. Therefore, while low BMI poses a risk due to its association with lower bone mass, physical activity and calcium consumption are protective factors in maintaining bone density.