Your lighter period is a coincidence. By the time alcohol hits your bloodstream it's not alcohol anymore, but a bunch of toxic metabolites that whiz around and give you the drunk feeling. It can't thin out your blood. Drinking *heavily* is a bad idea if you want to get pregnant (or at all, but that's another story). But an occasional cocktail is fine.
Nutrition. Pistachios contain fewer calories and more potassium and vitamin K per serving than other nuts. A 1-ounce serving of dry-roasted pistachios contains 160 calories, 6 grams of protein, 3 grams of fiber and 15 grams of fat, including only 2 grams of saturated fat.
Nutritional Value. Pistachios are a rich source of energy that comes mainly from fats. One cup of raw pistachios provides 685 calories in a caloric ratio of 67 percent fat, 20 percent carbohydrates and 13 percent protein. About 33 percent of the fat is saturated, whereas the remainder includes unsaturated varieties such as omega-3 and omega-6 essential fatty acids.