1000-lb Sisters - Season 3 (2021)

When Amy tries to get her house in order, she must confront some demons from her past. Tammy admits to a few cheat days just before her first doctor's appointment since rehab. Chris steps on the scale that could change his life.

After Tammy's bad doctor's appointment, Chris comes down on Amy for enabling her sister; the family worries that Tammy's new boyfriend is leading her down the wrong path; Amy's idea of having a meet-and-greet to help Tammy has its own set of problems.

Tammy must see a new therapist, but things don't go the way she'd hoped; Amy wants to lose her excess skin, but she gets bad news at the plastic surgeon's office; Chris faces the scale: if he's below 400 pounds, his surgery is on.

Amy's dreams have come true, but now she must face the demands of motherhood and still try to lose weight. Tammy goes to rehab for food addiction, and her brother Chris must move on with his weight-loss surgery without her.

While Chris makes progress after his surgery, Tammy gets discouraging news. Amy plans a unique bash for Tammy's 35th birthday. The family excitedly plans their first vacation together with all five siblings, but concerns rise about Tammy's mobility.

After a rift on the family vacation, Amy returns home and drops a bomb on Tammy; while Amy focuses on her new life, Tammy makes a decision that takes her even further away from her weight-loss goals.

After a rift on the family vacation, Amy returns home and drops a bomb on Tammy; while Amy focuses on her new life, Tammy makes a decision that takes her even further away from her weight-loss goals.

Amy and Michael finally move out of the duplex, while Tammy's partying phase takes a turn for the worse. Amanda tries to get through to her sister before it's too late, and Amy's in for a rude awakening at her annual check up with Dr. Procter.

Amy sees a pediatric dietitian and faces some difficult truths about Gage's diet. Dr. Smith makes a house call and confronts Tammy about her partying lifestyle. While on the road with Chris, Tammy's health hits a dangerous low point.