A close-up of Tammy Slaton from

TLC’s 1000-Lb. Sisters Season 4 continues to show the lives of Tammy and Amy Slaton. Tammy is finally approved for weight-loss surgery, and her family can’t believe her progress in rehab. Here’s what Amy said about Tammy potentially losing more weight than she did once Tammy undergoes gastric bypass.

How much weight has Tammy Slaton lost in ‘1000-Lb. Sisters’ Season 4?

A close-up of Tammy Slaton from '1000-Lb. Sisters' Season 4
Tammy Slaton from ‘1000-Lb. Sisters’ Season 4 | TLC via YouTube

The beginning of 1000-Lb. Sisters Season 4 shows Tammy Slaton being admitted to the emergency room after she couldn’t breathe. She was at her highest weight to date — 717 pounds — when she entered rehab. She had to get to 550 pounds for weight-loss surgery approval, and her time at rehab had many ups and downs.

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