Which foods worsen heartburn (foods to avoid with heartburn)?
1. Spicy foods

Spicy foods cause heartburn and worsen its symptoms. Many spicy foods, like chili peppers, contain capsaicin. Capsaicin delays gastric emptying and slows down digestion, which promotes acid reflux. Also, these foods may irritate the already irritated esophagus and worsen heartburn.
Also, spicy foods usually contain high fats that trigger heartburn. If you notice that spicy foods cause or worsen your heartburn, avoid them in your diet.