Tammy Slaton "Weighed the Most I've Ever Weighed" During '1000-lb Sisters' Season 4

Spoiler alert: This article contains spoilers for 1000-lb Sisters Season 4.

Season 3 of 1000-lb Sisters showed Tammy Slaton leave home to treat her food addiction at an in-patient rehabilitation center. But now that Season 4 is airing, fans are curious about Tammy's weight now. Her sister, Amy Slaton, famously underwent bariatric surgery in order to get down to a healthy weight and have a baby.

The goal seems to be for Tammy to eventually follow in her footsteps with her weight, but what's going on?

Tammy experienced a setback in Season 2 when it was revealed her boyfriend at the time, Jerry Sykes, was secretly feeding her unhealthy food. Tammy and Amy's brother, Chris Combs, accused Jerry of having a fetish for overweight women. Tammy finally ended the relationship, and her initial Season 3 rehab stay made it seem like she was serious about losing weight for her health.

So, how much does Tammy weigh now?

During the 1000-lb Sisters Season 4 premiere, Tammy offered an update on her weight. "Two months ago I decided to go back to rehab. I weighed the most I've ever weighed," she explained.

The scene cut to Amy being weighed, revealing that she was at 717 pounds. "I just don't feel good," an emotional Amy said

Indeed, this number is much higher than viewers have seen in the past.

In the Nov. 15, 2021, episode of 1000-lb Sisters, she had a weigh-in at rehab. According to the scale, she was 631 pounds at that time. She lost 60 pounds during her stay, which was 40 shy of her 100-pound goal. But, because she was tired of being away from home, she chose to leave rehab early.

Although Tammy has not shared a weight update on social media, she gained back some weight.

In the Dec. 6, 2021, episode, she was weighed during a doctor appointment. She found out her weight was at 639 pounds, meaning she gained weight since she left rehab.

In the Season 3 finale released on Discovery Plus, Tammy agreed to go to rehab again after she went off the rails with dieting.

Toward the end of the episode, Chris revealed that Tammy lost a total of 115 pounds over the course of 30 days. That means she could have been around 534 pounds.

Between Seasons 3 and 4, Tammy didn't share any weight updates on social media. Tammy's Instagram posts have made it seem like she's still in some kind of rehab facility, though, which bodes well for her future weight loss goals for bariatric surgery.

According to Mayo Clinic, candidates for weight-loss surgery have to meet a handful of guidelines. The conditions include showing an effort to lose weight six months prior to surgery, a BMI of 35 or higher, and at least one obesity-related medical condition.

It's possible that Tammy would have lost more weight if she didn't date Jerry. They aren't together anymore (she's now married to a man she met in rehab) but Jerry's apparent fetish with feeding Tammy and keeping her at an unhealthy weight may have slowed down any progress she might have made.

Hopefully, Tammy's latest stint in rehab is able to set her up for long-term success.

Watch 1000-lb Sisters on Mondays at 9 p.m. EST on TLC.