Researchers found that patients who were assigned to the highest dose of the new medication saw the top blood pressure number drop by a full 20 points. Some patients with high blood pressure can't get it under control with standard medications, but a new study shows an experimental drug is up to the task of treating these tough-to-treat cases. Why do some folks struggle more with managing their high blood pressure than others? When the hypertension is caused by the hormone aldosterone, which is responsible for how much salt the body retains, it is much harder to control, researchers explained....