10 Common Cooking Mistakes to Avoid while Dieting

2. Using soy, canola and other vegetable oils

While vegetable oils are inexpensive, using them comes with a hefty price tag – they are acidic in nature and readily contribute to weight gain when they are heated to high temperatures. No matter what the advertising may say, vegetable oils are not good to use in foods whose preparation involves heating. Coconut oil and olive oil are far better, if used in moderation.