Final answer:
The primary factor in reducing stroke mortality in the U.S. is the treatment of hypertension, which entails both lifestyle modifications and medications to manage high blood pressure.
Step-by-step explanation:
The reduction in stroke mortality in the United States has primarily been attributed to the treatment of hypertension. Hypertension, or persistently elevated blood pressure, is the main risk factor for stroke. Effective management of hypertension involves a combination of lifestyle changes, such as reduced salt intake and healthier diets, and in many cases, necessitates the use of medications. Keeping blood pressure within the normal range, whether through lifestyle adjustments or medication, is essential in reducing the risk of stroke. The health effects of excessive sodium intake on blood pressure have been acknowledged by authoritative sources such as the US Department of Agriculture, reinforcing the idea that maintaining healthy blood pressure is crucial for preventing strokes.
Moreover, the control of hypertension is intertwined with the control of other cardiovascular disease risk factors such as atherosclerosis, obesity, and diabetes. A comprehensive approach to stroke prevention includes addressing these factors through dietary and lifestyle choices, ensuring an intake of the right nutrients and enabling overall efficient body functioning and protection from disease.