Hyperacidity and GERD (gastroesophageal reflux disease) usually happen when stomach acid moves back into the food pipe. This can cause a burning feeling in the chest, sour taste in the mouth, bloating, burping, throat irritation, or discomfort after meals. It is often triggered by spicy or oily foods, overeating, irregular meal timings, stress, smoking, alcohol, obesity, or lying down soon after eating. Too much tea, coffee, or soft drinks can also worsen the symptoms. Some painkillers and medicines may increase acidity in certain people. Treatment usually includes simple lifestyle and diet changes, along with medicines when needed. Eating smaller meals at regular times, avoiding late-night meals, and not lying down for at least 2 to 3 hours after eating can help reduce symptoms. Limiting spicy, fried, and acidic foods is also important. Maintaining a healthy weight and reducing stress may improve digestion and prevent frequent acidity. Doctors may advise antacids or acid-reducing medicines for relief. If symptoms are severe, long-lasting, or associated with vomiting, unexplained weight loss, or difficulty swallowing, seek medical advice promptly.