Which of the following conditions might contribute to secondary osteoporosis?

• A. Aging and menopause
• B. Excessive weight lifting
• C. Certain medications and chronic diseases
• D. Regular aerobic exercise

Answer: (C)

Secondary osteoporosis occurs as a result of specific medical conditions or the use of certain medications that lead to decreased bone density. This type of osteoporosis is typically identified by the underlying causes that directly affect bone health. Certain medications, particularly long-term use of corticosteroids, and chronic diseases such as diabetes or hyperthyroidism, can significantly disrupt the balance of bone resorption and formation, leading to increased bone fragility and a higher risk of fractures.

In contrast, aging and menopause, while they are related to primary osteoporosis, are not considered secondary causes as they represent natural progression and hormonal changes rather than specific secondary factors. Similarly, excessive weight lifting typically promotes bone health by enhancing bone density through mechanical loading. Regular aerobic exercise is also beneficial for overall bone health, as it encourages weight-bearing activity that stimulates bone formation.

Thus, the option that highlights specific medications and chronic diseases accurately aligns with the definition of secondary osteoporosis and emphasizes the role external factors play in contributing to reduced bone density.