NEW YORK (WLNY) – You’re trying so hard — but you can’t lose weight.

If you’re watching what you eat and still not shedding those pounds, it’s possible the “healthy” foods you are eating are to blame.

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Nutrition and fitness expert JJ Virgin is the author of The Virgin Diet. According to her, avoiding seven problem foods for seven days can lead to dropping seven pounds.

Virgin says even foods that are good for you — egg whites, soy, peanuts and artificial sweeteners — can be detrimental to your diet.