When experts talk about one drink, they are talking about one 12-ounce bottle of beer, one glass of wine (5 ounces), or one shot (1.5 ounces) of "hard liquor."
Having more than three drinks in a day (or more than seven per week) for women, and more than four drinks in a day (or more than 14 per week) for men, is considered "heavy" drinking. The kidneys of heavy drinkers have to work harder. Heavy drinking on a regular basis has been found to double the risk for kidney disease.
Binge drinking (usually more than four to five drinks within two hours) can raise a person's blood alcohol to dangerous levels. This can cause a sudden drop in kidney function known as "acute kidney injury." When this happens, dialysis is needed until a person's kidney function returns to normal. Acute kidney injury usually goes away in time, but in some cases, it can lead to lasting kidney damage.
Some people should not drink at all. Ask your healthcare provider if it is safe for you to drink, especially if you have a medical condition or take medicines that might be affected by using alcohol. Women, older people, and those with smaller bodies should be especially careful. Of course, pregnant women are advised not to drink alcohol.