Atherosclerosis is a potential killer which can be exacerbated by drinking a lot of alcohol. The University of Maryland Medical Center notes that atherosclerosis is the underlying cause of most cases of heart attack, stroke, and vascular dementia. You can prevent atherosclerosis. by lowering your blood pressure and LDL ("bad") cholesterol levels, eating a healthy diet with lots of fruits and vegetables, quitting smoking, losing weight, and exercising more often. Science Daily reported on Oct. 21, 2013, "Excessive Alcohol Consumption Increases Progression of Atherosclerosis, Risk of Stroke."
A Finnish population-based study has showed that binge drinking was associated with an increase in atherosclerotic progression in an 11-year follow-up of middle-aged men. This progression of atherosclerosis was found to be increased among men who consumed 6 drinks or more on one single occasion. Furthemore, the risk of stroke increased among men who suffered from at least one hangover per year. The risk of stroke was further increased by hypertension and being overweight. The risk of stroke mortality in men was found to be increased by drinking large quantities of alcohol more than twice a week.
Excessive alcohol consumption has been found to be associated with a wide range of medical conditions. Interestingly, moderate alcohol consumption has been linked to a lower risk of stroke than abstinence, whereas heavy alcohol consumption has been found to be associated with an increased risk of stroke and stroke mortality. The most important risk factors for stroke aside from alcohol consumption, are hypertension, smoking, overweight, coronary artery disease, cardiac insufficiency, atrial fibrillation, type 2 diabetes, asymptomatic carotid artery stenosis and elevated levels of cholesterol. So if you drink alcohol you should be very careful not to drink too much.