When your blood pressure rises, your heart is working harder to pump blood to the rest of your body. This may lead to heart failure or a heart attack, especially in people with heart disease. Furthermore, the extra force exerted by blood may cause blood vessels to burst, resulting in bleeding. Blood vessels in the brain are especially likely to rupture, which can lead to a stroke.
Several Indian studies over the last few years have shown that Arjuna, in animals and in humans, reduces total cholesterol and increases HDL (“good” cholesterol). One study showed that this herb was as effective an antioxidant as vitamin E and that it reduced cholesterol in the human subjects quite substantially. Considering its benefit for cholesterol, it is not surprising that it lowers blood pressure; many cases of high blood pressure in the United States are caused by cholesterol accumulation in the arteries.