Chuck gets an MRI and finds out he has torn his meniscus.

Ayanna meets with fitness guru and fellow little person Allison Warrell for her first weigh-in.

Meet Allison Warrell, who specializes in helping little people with their health and fitness goals.

Chuck is a morbidly obese little person—he's 3’6” and weighs 164lbs.

Catch a sneak peek at the new TLC special Big & Little.

Ayanna meets with fitness guru and fellow little person Allison Warrell for her first weigh-in.

Family By The Ton premieires, January 10 at 10/9c only on TLC.

Drew, who wears an 18x t-shirt, describes his weight problems and how it affects his lifestyle.

Naomi feels guilty after her mother begins to experience complications post-surgery.

Drew goes to see Dr. Procter for the first time and is disappointed to find that he is too heavy for their scale.

Dr. Procter visits Chitoka at her home to see what changes she needs to make in order to qualify for surgery.

Naomi visits Dr. Procter's office to see if she has lost enough weight to be approved for surgery.

Chitoka works with a fitness trainer to try to lose some weight and walk for the first time in a long time.

Chitoka invites family and friends to witness her walk outside for the first time in years.

Chitoka finally makes it into a car and is on her way to Dr Procter.

Naomi's boyfriend is unsettled by her physical and emotional changes since having surgery.

Chitoka is on her way to Dr. Procter's for the surgery, and her family is right there to support her.

Naomi opens up to her friends about her recent breakup and the setbacks it caused in her weight loss progress.

At 685-lbs, Justin is the largest teenager in America. See some of the daily struggles he faces at his size, and what is driving him to lead a healthier life.

Despite the simplicity of Amish and Mennonite clothes, there are many standards behind pants, shirts and dresses.

What makes the Amish so different from the English -- and from the Mennonites? Find out in this exclusive video.