Celery juice rapidly speeds up digestion.It does this by prompting the liver to increase bile production, and instantly strengthening the stomach’s hydrochloric acid production. This then begins to break down old undigested rotting protein, old rancid fats trapped at the bottom of the stomach, and in the small intestinal tract—that have been there for decades in everyone. Once these fats and proteins dissolve, a feeling of bloating occurs that can sometimes be mild to severe, depending on how toxic someone’s digestive tract has become. Along with how much old rotten undigested debris is in their digestive tract.