After overcoming a dependence on drugs & alcohol, sneaking food is 660-lb Doug's last remaining vice. Can this husband, and father of 3 overcome his addictive personality and take control of his eating habits in order to save his life & his marriage?

A devoted girlfriend and loving aunt, Alicia is all smiles and laughter on the outside, but on the inside she is terrified that her addiction to food will kill her before she can marry her long-time love or watch her nieces grow up.

Nikki's life and career are threatened by her 650-pound weight. Determined to make a change, she undergoes weight-loss surgery.

Nothing means more to Chris than his relationship with his daughter, Zoey, but now he feels he is failing her as his weight gain begins to limit his mobility. Chris turns to his mother, whom he hasn't seen in seven years, to help get his life on track.

In the fourth year of his weight-loss journey, Sean struggles to get past the loss of his mother and live on his own; Dr. Now intervenes to control Sean's eating for a time.

A college graduate with a once-promising career, Justin has eaten his life away to the point of never leaving the house for anything but food; only the help of Dr. Now's weight-loss program can restore his hopes of living a happy, productive life.

Battling severe depression in the wake of a suicide attempt, 46-year old Olivia hasn't left her Chicago basement in two years. With one last chance at a new life, Olivia will travel to Houston with the hope of having a life-changing surgery.

With her weight spiraling, Stephanie needs her mom's help to care for her three kids. Now, she's at the point where she'll have to lose weight or risk not having the chance to see her kids grow up.

650-lb Melissa begins her seven-year weight loss journey.

650-lb Melissa struggles to get to her ideal weight.

750-lb Henry begins his weight loss journey in the hopes of transforming himself in time to attend his high school reunion.

Weighing over 600 lbs. each, Vianey and Allen are locked in a codependent relationship based on a shared love of food. As they head to Houston, they will soon find out if their relationship can handle the strain of growing healthy together.

As Steven heals from his weight loss surgery, his brother Justin finally decides to come to Texas to get the same procedure, but his feelings toward Steven immediately begin to sabotage his hopes of surgery.

Lee's anger issues continue to jeopardize his relationship with Rena and threatens to derail both of their weight loss journeys; a major life event sends Sarah into a depression that she must pull herself out of if she wants to keep losing weight.

As an Italian American, Geno was raised with lots of love, family and food. Now, he's still living with his mom and eating himself to death, and it's time to make a change. Geno's cousin, Nico, joins the cause, and they pledge to lose weight together.

Latonya found the man she wants to marry. The only problem is that, at almost 700 pounds, she can't walk down the aisle. Latonya doesn't want to give up the food that she's used to, but will she do it for love?

At 42 years old, Angel is staring death in the face. She is struggling to make a positive change and be an active part of her partner and son's lives. With so much at stake, can she turn her life around?

Kelly is on the verge of immobility when she decided to make the trip to Houston to visit Dr. Now; Her journey gets off to a painful start when a long travel day grows longer as Kelly gets stuck in a cab on her way from the clinic to the hospital.

Cillas' food addiction is getting in the way of his ability to be there for his fiancée, Jessica, and her three daughters; if he doesn't lose weight soon, he knows he'll lose either his girls or his life.

J.T. is almost 900lbs with a 100-lb lymphedema mass on his leg and a food addiction that is bound to kill him if he doesn't change. His girlfriend takes him to Houston, but when his behavior drives her away, J.T. is left with only Dr. Now to help.

Zsaylnn, once known as the "Fat Girl Rock Star" - married a man who loves large women. Now weighing over 600lbs, she urgently needs to lose weight to be the mother her daughter deserves. Can Zsalynn succeed with a husband who doesn’t support her goals?

Chuck weighs almost 700lbs and it has hindered every aspect of his life. He's had to downsize his business and his wife feels like a single-parent, who is ready to leave him. Can Chuck take control and reclaim the life that's slipping through his fingers?

At 670 pounds Ashley must live in her parents' home with her husband. Desperate to save her life and her marriage, she decides it's time for a drastic change. Can weight loss surgery save her life?

At 661 lbs, Erica regrets not keeping a promise to her mom. She hopes her siblings will help but they are reluctant based on past failures. Each meal threatens Erica's worst fear coming true; dying the same way she lives, alone & surrounded by food.

Brandon is a talented musician with a beautiful voice and a run-away weight problem; he wants to lose weight and embark on a career; he also wants to take the next step with his girlfriend, Taylor, whom he risks losing if he can't make a change.