Low calorie foods and snacks may seem like a lifesaver when you're dieting, but if you aren't careful, you may do more harm than good. As Dr. Oz points out, sugar free and low calorie foods aren't necessarily low in fat, so watch out for these diet pitfalls.

• Sugar-Free Cookies - They may be delicious and sound like a great diet snack, but some sugar-free cookie varieties have the same fat as the real thing. If you think you're making a smart diet decision, remember that calories aren't the only important part of the nutrition label. Dr. Oz suggests trying graham crackers for your sweet fix instead. They typically have less sugar than other cookies and pack only 1 gram of fat.
  
  
• Veggie Chips - If you want a salty snack but don't want to dive into a bag of Lays, these veggie chips sound like a good option. In reality though, a small bag will often have the same amount of calories and fat as a small bag of regular potato chips. Next time, reach for some baked tortilla chips and salsa for a healthier option.
  
  
• Fat-Free Dressing - While it's true that using a regular full fat dressing can make your healthy salad a nutritional nightmare, fat free dressings may make you miss out on some nutrients. Fat is necessary for the body to absorb certain nutrients from vegetables so try a low fat oil based dressing instead.
  
  
• Fruit Snacks - The packaging may say that they're made with real fruit juice and have all the vitamin C you need for the day, but the preservatives and artificial ingredients outweigh any nutrients. Instead of fruit snacks, pick up a piece of fresh fruit for vitamins without preservatives.