Celery comes from the same family of vegetables like carrots, parsnips, parsley, and celeriac. This is a very popular low-calorie snack with a high content of fiber. The nutritional value of Celery is however very low. The main beneficial ingredient is just the high fiber content. Due to this aspect, Celery is considered a good option for dieting since its filling while not adding a lot of calorie to your diet and the high content of naturally occurring fiber is good for the digestive system.