Gas/ Flatulence Excess gas in the stomach is definitely not a good condition, it is also considered bad manners, and many types of physical problems also arise due to excess gas formation in an average amount.If a sour after-taste in the mouth follows a belch, It is a symptom of indigestion and it also means we are expelling gases formed in the stomach. Cause of Gas, Acidity and Flatulence Excessive hot, spicy, fried food. Intake of fats, sweets, adulterated food. Intake of Alcohol. Excessive intake of chocolate, tea, coffee, garlic, onions and excessive smoking. Stress-related conditions like anger, fear, worrying. Excessive exposure to sun and heat. Treatment of Gas/Flatulence Avoid heavy smoking and pan eating. Cut down drastically on your daily number of cold drinks and cups of tea. Cut off intake of milk and sweets, if these increase gas. Eat less than appetite demands. Eat slowly, fully concentrating on the food, do not indulge in thinking while eating. Avoid onions, tomatoes, p