Is celery a toothbrush for your colon?

Celery is often criticised as being nothing but water with hair in the middle. But perhaps that's because your not supposed to actually eat it according to this old advertising campaign.

Let's be honest, no one likes celery. You but it because you feel you should be eating more salad but it goes limp long before you've eaten the whole head. No one likes limp head.

So why do you actually buy it?

Updates
+1 y
Just curious, do you insert the leafy end or the other cut side. Asking for a friend.
Is celery a toothbrush for your colon?
Post Opinion