HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong immune system, the body has trouble fighting off disease. Both the virus and the infection it causes are called HIV. White blood cells are an important part of the immune system.
One recommended serving of peanut butter is 2 tablespoons, which is about the size of a ping-pong ball. That serving contains about 188 calories, 145 of which come from fat. Thus, peanut butter is more than 75 percent fat; the 2010 Dietary Guidelines for Americans recommends limiting fat to just 20 to 35 percent of total calorie intake.
The calories in one tablespoon of peanut butter vary by variety and brand. Creamy and crunchy varieties are the common types of unflavored peanut butter. One tablespoon of creamy or crunchy peanut butter ranges from 70 to 100 calories. Keep in mind that the nutrition label for peanut butter declares one serving of peanut butter to be two tablespoons, so you must divide the nutrition label numbers by two to calculate the nutrition of one tablespoon.