Most people, at some time, have a strong desire for some particular food, such as ice cream or pizza. Such a desire for a particular food, even when one is not hungry, is called a craving. There are a number of theories as to why people crave certain foods, including:

  • Self-imposed food restriction.
  • A psychological desire for a "comfort" food.
  • Hormonal changes.
  • Gender differences.
  • Response to stress.

Food Restriction. The theory of food restriction holds that people desire those foods that they feel should be avoided. According to the dietitian Debra Waterhouse, food cravings do not cause weight gain, but denying the cravings does. This creates a vicious cycle. For example, a person may feel guilty for wanting a giant cinnamon roll that he or she smells upon entering a shopping mall. The urge is avoided, but a couple of hours later, the person may want the cinnamon roll more than ever, give in to the craving, and quickly eat the entire cinnamon roll. This leads to even stronger feelings of guilt, along with the resolve not to eat anything remotely similar for some period of time. Soon, however, the craving strikes again. The cycle becomes one of denial leading to deprivation, then to overindulgence, and then back to denial. This denial-deprivation-overindulgence pattern confirms the negative view of all food as either good or bad. It would be better, however, to imagine a world where foods are not designated as bad and not allowed, but where reasonable portions of any food can be part of a healthful diet. Portion control is the key.

Comfort Foods. Certain foods are usually served during holidays or special occasions. These foods become associated with comfort and happy times, eliciting feelings of relaxation and reduced stress, and are thus called "comfort foods." Some common comfort foods are ice cream, macaroni and cheese, meatloaf, pudding, cookies, and chicken. One's cultural background plays a large part in comfort-food choices. Mood also plays a roll in cravings for comfort food. Women are more likely to eat when they are sad, mad, or anxious, while men look to food when bored or lonely.

Those who find themselves reaching for comfort foods frequently should ask themselves if they are truly hungry, or whether they are using food to soothe their mood. For those who are feeding emotions with food, it is helpful to begin to replace the food with healthier activities, such as taking a walk, participating in a favorite form of exercise, or reading a good book.

Hormones and Cravings. How do hormone changes affect food cravings? For women, these cravings can be more intense than for men. Hormonal changes tied to the menstrual cycle are often a cause of cravings. Immediately prior to the menstrual period, the body's estrogen level drops, as does the serotonin level in the brain.

Serotonin is a neurotransmitter, or brain chemical, that plays a role in maintaining a relaxed feeling. When the level decreases, irritability and mood swings increase as does the craving for carbohydrate- and fat-rich foods such as chocolate, cookies, cake, potato chips, and roasted nuts. There is nothing wrong with eating a piece of chocolate, of course, but when chocolate and other craved foods become the mainstay of the diet and healthier choices get overlooked, then the cravings have gotten out of control and health may be compromised.

Gender Differences. Is there a difference between the sexes when it comes to food cravings? According to Waterhouse, the foods most frequently craved or preferred by men include hot dogs, eggs, and meat, which are all protein foods, while women reach for chocolate, ice cream, and bread. She attributes these differences to sex hormones and body composition. Men have larger amounts of the hormone testosterone and about forty pounds

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