Not all foods affect people in the same way; however, foods that commonly increase or aggravate symptoms of gastritis include spicy foods and foods that are high in fat, according to Drugs.com. Individuals should gauge for themselves which foods cause symptoms and avoid anything that increases acidity in the stomach.
Spices, including chili powder, garlic powder, and black and red pepper, increase levels of acidity in the gut, as do hot chilies, fresh garlic, peppers and onion, states Drugs.com. Chocolate, alcohol and caffeine are common triggers. Certain beverages, including carbonated sodas, regular and decaffeinated coffee, tea, whole milk, and citrus fruit juices, may make symptoms worse. Other foods to avoid include tomatoes and tomato-based products, fatty meats, and strong cheeses.
Gastritis is caused by irritation or inflammation in the lining of the stomach, according to the San Francisco Chronicle. Acid reflux occurs when acidity rises through the opening at the top of the stomach and into the esophagus. Symptoms include heartburn, nausea, indigestion, loss of appetite and abdominal pain. Individuals suffering from gastritis can benefit from planning meals that emphasize whole grains, nuts, beans and vegetables. Additionally, glutamine, an amino acid found in beef, poultry, spinach, cabbage and yogurt, is a natural treatment for gastritis. It can also be taken as a supplement in the form of powder, tablet or capsule.