Where does all that gas come from, anyway? Often, it comes from swallowing air. It's also generated by intestinal bacteria that produce carbon dioxide and hydrogen (both odorless, by the way) in the course of breaking down carbohydrates and proteins in the food you eat. The problem is minute quantities of other, more pungent gases that gives flatus its characteristic odor. Eating certain foods, like peas, beans, and certain grains produces noticeably more gas than eating other foods.

Common sense says eliminating foods that are considered notorious gas-producers (or eating them in small quantities) can go a long way to ward reducing excess flatulence.

Well-known offenders include:

Apples
Apricots
Beans (dried, cooked)
Bran
Broccoli
Brussels sprouts
Cabbage
Carrots
Cauliflower
Eggplant
Nuts
Onions
Peaches
Pears
Popcorn
Prunes
Raisins
Soybeans

The medication simethicone may help reduce flatulence by dispersing gas pockets (and preventing more from forming). It has no known side effects. Simethicone is available by prescription as well as over the counter under the brand name Mylicon.

Gas may signal a variety of other problems worth looking into:

Lactose intolerance (inability to properly digest milk, cheese, and other dairy products). (See Tip
113 in chapter 4, Eating for Better Health.)
Bacterial overgrowth in the intestines (often caused by certain antibiotics).
Abnormal muscle contraction in the colon.