What Can Cause Heartburn?

Foods rich in fat and oil tend to slow down digestion, keeping the food in your stomach longer. This increases pressure in the stomach, allowing reflux of stomach contents.

Tomatoes and tomato-based products
These foods relax the lower esophageal sphincter (LES),causing reflux.

Alcohol
Alcohol relaxes the lower esophageal sphincter, allowing the reflux of stomach contents into the esophagus. It also increases the production of stomach acid.

Tobacco
The chemicals in cigarette smoke weaken the LES as they pass from the lungs into the blood.
Large meals
A full stomach can put extra pressure on the lower esophageal sphincter (LES), which will increase the chance that some of this food will reflux into the esophagus.

I agree with you Poonam.. These are the commonest causes of a heart burn. You can get relief from heart burn by the following tips-
1. Reduce the quantity of each meal. The bigger the meal, the more the stress on the digestive system, the more the level of stomach acidity and the greater the risk of compounding an existing acid reflux condition. 5-6 smaller meals per day is better than 2-3 big meals.

2. Chew and eat your food in a leisurely way. This prevents air from being ingested at the same time as the food, and avoids pressure in the stomach and bloating which all put extra pressure on the esophageal sphincter, with the resulting splash back of stomach acid.
3. Lessen coffee intake and drink herbal tea instead, as well as reducing intake of peppermint, soda and alcohol, high-fat or spicy meals, citrus juices, coffee and caffeine, chocolate and foods based largely on tomatoes. Don’t eat food that irritates your intestines, because this in turn can cause your esophageal sphincter to open at the wrong time.
4.The acid reflux danger can be reduced by 50% by adopting a high fiber diet and that high-fiber diets are effective for optimizing digestion and sweeping away toxic matter.
5. Dairy produce, especially milk, should be cut down. It causes for more acid, mucus and allergies, all conditions that stimulate Candida overgrowth and bring on further digestive problems contributing to GERD.
6. Because obesity and excess weight also act to lever open the lower esophageal sphincter, reduce calorie intake as well.