Small amounts of certain root vegetables may be OK, but be careful as the carbs can quickly add up. Finally, be aware that regularly snacking on cheese when you’re not hungry is a common mistake that can slow weight loss. Instead, stick to all-natural peanut butters without all of the unnecessary trans fats, hydrogenated oils, and sugars. You can even make your own all-natural peanut butter to ensure you’re consuming strictly healthy ingredients. "Start with healthy balanced meals and snacks," she said.