Final answer:
Decreased blood pressure is a laboratory finding indicating a patient has reached one of the DASH diet's goals, which is known for its potential to lower blood pressure and reduce cardiovascular risks.
Step-by-step explanation:
The question pertains to the effects of the Dietary Approaches to Stop Hypertension (DASH) diet on a patient's health. The DASH diet is known for its potential to lower blood pressure among other cardiovascular risk factors. This is achieved through nutrient-rich foods that are low in sodium and saturated fats while being high in potassium, calcium, and magnesium.
Among the laboratory findings provided, a decreased blood pressure is a clear indicator that a patient has reached one of the primary goals of the DASH diet. Lowering blood pressure can help in reducing the risk of hypertension and its related complications, such as stroke and heart disease. As such, Option C (Decreased blood pressure) is the correct answer.
Other effects associated with a successful adherence to the DASH diet could potentially include decreased Na+ levels (sodium), but these are not offered as an option in the original question.