When you’re eating lean protein, healthy fats, and fiber-rich foods, you’ll have an easier time maintaining your weight and your cholesterol. A healthy diet should not only be high in nutrient-rich foods but also low in high-calorie foods that lack nutrients. Avoid foods that are high in sugar, sodium, cholesterol, trans fat, and saturated fats. Limit refined carbohydrates. Make a habit of reading nutrition facts on your foods, so you’re educated about what you’re putting into your body.