6. Good fats should not be avoided
Not all fats are unhealthy. The fatty acids that are found in olive oil, fatty fish, seeds and nuts cannot ruin your diet. On the contrary, if consumed in moderation, they keep your body working properly. Low-fat foods are sometimes too high in added sugars which are far more dangerous for your waistline than fats and oils. The only fats that you should avoid are those found in junk food.