Usually, though not always, this has a pleasant effect. Your body canât store alcohol, so it breaks it down - your liver's job. The liver firstly changes alcohol into acetaldehyde (this is toxic), then into acetate (harmless), which is finally broken down into carbon dioxide and water.
Each one-cup serving of grapes contains 62 calories, 0.6 grams of protein, 0.3 grams of fat and 15.8 grams of carbohydrate, including 0.8 grams of fiber. (See Reference 1) This is about three percent of the daily 25-gram value for fiber for people who eat a 2,000-calorie diet.
Grapes are rich in carbohydrate and sugar. If you are following a modified carbohydrate diet, keep in mind that one grape contains about one gram of carbohydrate. When eating grapes, aim to keep your portion to about 12 to 15 medium grapes, equivalent to a half cup serving. Nutrition differences between varieties aren't large. Each half-cup serving acts as a good source of vitamin K, C , thiamine, and vitamin B6. Vitamin K is important for strong bones and blood clotting.