Adult-Gerontology Clinical Nurse Specialist (CNS) Practice Exam

Which nutrient intake is important for older adults to prevent bone weakening?

1. Folic acid

2. Iron

3. Calcium

4. Vitamin B12

The correct answer is: Calcium

Calcium is essential for maintaining bone health, particularly in older adults who are at increased risk for osteoporosis and bone weakening. As individuals age, their bodies may absorb calcium less efficiently, and they might not consume enough through diet. Adequate calcium intake helps to build and maintain strong bones, making it crucial to prevent conditions that lead to fractures and reduced mobility. This mineral works in conjunction with vitamin D, which is important for calcium absorption. While folic acid, iron, and vitamin B12 play significant roles in overall health and can affect other systems in the body, they do not directly contribute to maintaining bone density in the same way that calcium does. Folic acid is essential for DNA synthesis and cellular function, iron is crucial for oxygen transport in the blood, and vitamin B12 is important for nerve function and the production of red blood cells. These nutrients support various bodily functions but are not the primary defenders against bone weakening.