Like plumbing, pressure can cause a weak section to break and cause major problems. Aging arteries and high blood pressure can rupture a vessel in the brain and cause a hemorrhagic stroke. A Maryland study of 393 deaths from cerebral hemorrhage found that the average age of black patients was 49 years of age and the average for whites was 61 years of age. Hypertension is a dangerous and sneaky risk factor for African Americans. Some don't know they have high blood pressure while others know but don't follow their doctor's instructions.
Black males are the worst.
The smoking gun hasn't been found but there are a number of bullets lying around. Stress can raise your blood pressure. Studies have found that hypertension is more prevalent in blacks with darker skins than those with lighter skins. Some researchers feel that slaves who reached our borders were those whose bodies needed little sodium to survive that trek and sea voyage. In large doses sodium is a poison.