Why is potassium significant in an older adult's diet?

Potassium is indeed significant in an older adult's diet primarily because it helps maintain healthy blood pressure and supports heart health. As people age, the risk of hypertension and cardiovascular diseases increases, making potassium especially important. This mineral aids in the regulation of blood pressure by counteracting the effects of sodium, thus helping to reduce the tension in blood vessel walls. Additionally, adequate potassium intake is associated with a lower risk of stroke and heart disease, which are common health concerns in geriatric populations.

The other options do not accurately reflect potassium's primary role or benefits. While calcium absorption is important for bone health, it is not a direct function of potassium. Weight loss is more influenced by overall dietary patterns and calorie balance rather than a single nutrient like potassium. Finally, while potassium is essential for overall health and energy utilization, it is not the primary energy source for seniors. Instead, carbohydrates are typically considered the body’s main source of energy.