Hi Santosh, Thanks for writing to HCM. Junk food is a pejorative term for food containing high levels of calories from sugar or fat with little protein, vitamins or minerals. Their nutritive value is poor. The excess fat, carbohydrates, and processed sugar found in junk food contributes to an increased risk of cardiovascular disease, diabetes, weight gain, and many other chronic health conditions. The reason why you could be not be tolerating well is mainly because of food induced gastritis. Since they cause health hazard, it is better you avoid it. This is not a serious issue. Better to eat healthy food to stay healthy. Hope the information provided is clear. All the best.