Processed meats (bacon, sausages, hot dogs), sugar-sweetened drinks, ultra-processed snacks and chips, fried foods, ice cream and sweet dairy desserts, sugary breakfast cereals, high-sodium convenience foods (instant noodles, canned soups), industrial trans-fat products, candy/sweets, and excess refined carbs.
Large studies link habitual high intake of these mainly to heart disease, diabetes, and some cancers.