Patients with rheumatic heart disease should not consume spicy foods, including chili peppers. Chili peppers are considered heat-inducing foods that can cause an increase in heart rate, thereby exacerbating the burden on the heart. They can also irritate the gastrointestinal tract and worsen the clinical symptoms of rheumatic heart disease. Patients with rheumatic heart disease should focus on a diet that is bland, easy to digest, and high in vitamins, fiber, and quality protein. They should avoid spicy and greasy foods, consume fewer nuts, and eat more vegetables, which can help alleviate symptoms and reduce the burden on the heart.