North American Registry of Midwives (NARM) Practice Exam

What percentage does estrogen therapy reduce the risk of bone fractures?

1. 30%

2. 50%

3. 70%

4. 90%

The correct answer is: 50%

Estrogen therapy is well-documented for its effects on bone health, particularly in postmenopausal women who are at increased risk for osteoporosis and bone fractures due to declining estrogen levels. When estrogen is administered, it helps to mitigate bone loss by inhibiting osteoclast activity, the cells responsible for bone resorption. Research indicates that estrogen therapy can reduce the risk of hip, vertebral, and other related fractures significantly. The range of reduction in the risk of bone fractures typically cited in literature is around 30% to 50%. In this case, the selected answer of 50% indicates a robust understanding of the potential protective effects estrogen can have against bone fracture risk, positioning it within an effective range supported by clinical studies. The percentage of fracture risk reduction can vary based on individual factors such as age, duration of therapy, and specific health status, but 50% stands out as a commonly referenced statistic in clinical guidelines and studies regarding estrogen therapy's role in fracture prevention.