Some people believe certain foods, like celery, are “calorie negative,” i.e. they burn up more calories that they create, leading to the kind of weight loss that is crucial for many of us with PCOS.
Unfortunately, “negative calorie food” is nothing more than wishful thinking. The thermic effect of food does cause your body to burn up calories as it processes meals, snacks and beverages. But this process only accounts for up to 30% of the calories you eat – protein, for example, takes more calories to digest than fat or carbohydrates.
It’s true that a medium-size rib of celery has only about 6 calories. But it’s thermic effect is approximately half a calorie. However, that doesn’t mean you shouldn’t use celery as a low-calorie but filling addition to salads, stir fries and soups.
While you can’t depend on it to magically melt away your weight, celery is healthy food, especially as it has phthalides – compounds that can help reduce blood pressure, which is a classic, heart-damaging symptom of PCOS.