The first line of defense is diet and exercise, according to Dr. Oz. But he says gastric bypass surgery is an option when everything else fails.
"If you're 50 pounds overweight and you have a medical problem or 30 pounds overweight with a medical problem, the FDA, which regulates these issues, and Medicare and Medicaid, the groups that pay for this are now saying it's OK as long as you have a medical problem."
When the scenario is played out again, this time the mom is the one who wants the gastric bypass for her daughter's chronic weight problem.
"You're going to look beautiful -- you'll be skinnier," the mom says.
"Mom, why are you ashamed of me?" the daughter replies.
"You are my daughter and a reflection of who I am," says the mom.
A couple listening nearby can't stand to hear what should be a private conversation and complains to the manager. Another woman, Samantha, breaks out in tears and when our emotionally distraught teen actor leaves the table, Samantha follows her to give her a hug and to comfort her:
"How old are you?" Samantha asks.
"I'm going to be 18 in November," the actor replies.
"You're too young to have a surgery such as that," Samantha says. "I struggle with it sometimes. I love my mom to death. But of course, that's your mother. But sometimes, especially with what I just witnessed with your mom, they're not the most positive influences in your life."
Then, Samantha is confronted by her mother, who defends herself.
"But you understand what I'm trying to do: I'm trying to help her," the mother says.
"I understand the main idea of trying to help her, but what I don't understand is the way of doing it," Samantha responds.
Quinones and Dr. Oz introduce themselves to Samantha, who is relieved to know this is only a scenario, but is still in tears.
"Why were you so involved?" Quinones asks.
"I just got so upset, overhearing what I did. Oh my God, I really can't talk right now," Samantha replies.
"What was it that upset you?" Quinones asks.
"Just, such negativity," she says. "I don't know. People go through stuff all the time. But it's different when you witness it and see it first-hand. ... I had to say something."
For our teen actress, who in reality struggles with her weight problem, Samantha turned out to be a real hero -- someone brave enough to be willing to take action and do what she felt was the right thing to do.
Watch the scenario unfold on "What Would You Do?" on Friday at 9 p.m. ET.