In the We Bare Bears episode " Bear Cleanse ," a doctor forces the bears to adopt a strict, natural diet after a check-up reveals their poor health from consuming human food. The episode follows their difficult, often humorous, 21-day journey to adjust to these new, restrictive eating habits.

Bear Cleanse – We Bare Bears (Season 2, Episode 3) - ‎Apple TV

The full transcript for this We Bare Bears episode can be found on the We Bare Bears Wiki .