High levels of alcohol in your body can result in headaches, severe dehydration, nausea, vomiting, diarrhea, and indigestion. Drinking excessively, even on a single occasion, increases a person's risk of detrimental heart effects.
Long-Term Health Risks. Over time, excessive alcohol use can lead to the development of chronic diseases and other serious problems including: High blood pressure, heart disease, stroke, liver disease, and digestive problems. Cancer of the breast, mouth, throat, esophagus, voice box, liver, colon, and rectum.