Intestinal gas, or flatus, comes from normal bacteria in the gut and from swallowing air. The amount produced varies from person to person. The foul odor of some gas comes from trace gases that are natural products from the breakdown of foods. Foods that promote gas tend to be high in fiber or carbohydrates that are hard to digest such as:
* beans,
* peas,
* whole grains,
* cabbage and related vegetables,
* corn, and
* onions.

Patients with intolerances to wheat or milk may also make excess gas. This may happen in people who do not eat these foods. Others who eat them regularly seem to adjust to them.

Swallowing air can come from eating too fast. Chewing gum also seems to contribute. When a person is anxious they may sigh and breathe deeply leading to air swallowing. Swallowed air will increase belching and flatus production, but may not smell foul.

If excessive belching, bloating, or flatus troubles you, consult a healthcare provider. He or she will examine you to rule out any serious causes. An initial trial of avoiding milk products may be helpful. Keep track of what you eat and experiment with removing suspected items. Products claiming to fight gas (like Beano) that contain a natural enzyme may help some people tolerate beans and other legumes.

Choose a Health Topic Category Aging Alcohol Problems Allergies Arthritis Back & Neck Problems Blood & Circulatory Problems Bones, Joints & Muscles Brain & Nervous System Cancer Cardiovascular Health Child Health & Development Common Illnesses Cosmetic & Reconstructive Surg Dental Health Diabetes Digestive System Drug Abuse Ear, Nose & Throat Eating Disorders Exercise & Fitness Eyes & Vision Family Planning Foot Care General Health Genetic Disorders & Birth Defects Headaches Health Quizzes Hearing HIV Infections / AIDS Hormonal Disorders Infectious Diseases Medications Men's Health Mental & Emotional Health Nervous System Newborn Care Nutrition Parenting & Family Life Personal Safety Pregnancy & Childbirth Preparing for Emergencies Respiratory Problems Sexually Transmitted Diseases Skin Health Smoking Sports Medicine Stress & How to cope Surgery Symptoms Teenage Concerns Test & Examinations Urinary and Genital Systems Weight Control Women's Health   Go