Diet and Heart Attack Risk: The risk of heart attack may be hidden in both vegetarian and non-vegetarian diets. The real difference is how balanced the food is, less oily and less processed. According to experts, factors like cholesterol, lifestyle and exercise play a more important role. Dr. Vishal Rastogi, Director of Cardiology Department, Fortis Escorts Hospital, Delhi, has shared many important things in this regard in a conversation with Kadak.