Cardiomyopathy is caused by heavy drinking, and is marked by weakened heart muscle, along with atrial and ventricular fibrillation, fibrillation is the chaotic twitching of the heart chambers. Another disease called Cirrhosis, is when the liver can no longer function due to severe scarring of the liver tissue. It is very unpredictable to detect how will get the disease, noted by the fact heavy drinkers may never get it, but another person drinks a few times and gets the disease.