A standard glass of wine contains about one-half ounce of pure alcohol. The liver can only process less than a quarter of an ounce of alcohol an hour. It takes about 6 hours to eliminate all the alcohol in 3 glasses of wine. That’s 6 hours of continuous exposure to acetaldehyde, possibly longer. Unmetabolized acetaldehyde overloads the liver and floods the body via the blood stream, causing hangover symptoms, and worse. Numerous studies have linked acetaldehyde to liver disease, breast cancer, Alzheimer’s, and even dependency.