Absolutely ...
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Celery (one 110g serving) contains 3 grams of carbohydrate and almost no fat.
Much of that carbohydrate (1.5g) is fiber which means that celery has pretty much no fat and little to no carbs.
It has 1 gram of protein in a whole serving and tons of nutrients. If there was ever a food to lose weight with, it would be this one!
It's almost like eating celery is eating nothing but fiber and water, both of which have no calories so it's a food that delivers pure nutrition with no effect on weight.
You would need to eat about 120 cups per day to maintain your body weight so technically I guess it's possible to gain weight with celery if you were to eat 180+ cups/day, everyday, but good luck with that feat.
Eat and be healthy.
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