For many people, a meal is not complete without a glass of wine. If white wine is your favorite -- whether a bottle of something special or a restaurant's house wine -- you can include it in your diet without worry. A glass of white wine is relatively low in calories, has no fat and offers small amounts of vitamins and minerals. The key is to drink it in moderation.
Calories and Fat
A 100-g, or approximately 3.5 oz., serving of white wine contains 82 calories, although this amount will vary slightly, based on the type of wine you choose. White wine contains zero g of fat. Eat a meal or a snack with white wine to slow the absorption of alcohol into your bloodstream.
Carbohydrates and Protein
White wine does not provide much in the way of carbohydrates and protein, two nutrients your body uses for energy. One serving of white wine contains 2.6 g of carbohydrates; you need 225 to 325 g per day. The few carbohydrates in a serving of white wine also serve to keep your kidneys and brain functioning as they should. A serving of white wine has only 0.1 g of protein, so it doesn't put but a tiny dent in the 46 to 56 g you should consume per day.
Drink a serving of white wine, and you consume 3 percent of the magnesium you should take in each day, based on a 2,000-calorie diet. Although there are healthier ways to get magnesium in your diet, the magnesium in wine nonetheless contributes to the function of the enzymes your body produces. You will also get smaller amounts of calcium, iron, zinc, potassium and phosphorus.
White wine serves as a source of vitamin B-6; one serving contains 3 percent of the daily recommended intake. One serving also provides you with 1 percent of the riboflavin, also called vitamin B-2, and niacin, known as vitamin B-3, you should take in each day. All three B vitamins present in wine help you extract energy from the foods you eat.
Drink in moderation to avoid consuming too many calories. Regularly drinking white wine to excess may also negatively impact your immune system, and cause memory loss, liver disease and anxiety. Consult your physician if you think you may drink too much white wine, or any alcohol.