Is celery really a negative calorie food?

PHIL O’FARRELL, HEBDEN BRIDGE

A stick of celery contains about six calories; chewing and digesting it will only take half a calorie. However, the rest of your metabolism doesn’t stop just because you are eating celery and a 2016 study found that a stick of celery provides 19 fewer calories than you normally burn during the time you are eating it. So you’ll still starve on a diet of celery, just more slowly than not eating at all.