"Part of the process of rehab is to completely disconnect from experiences, from triggers, that took you to where you already were," Oz said in an interview with The Canadian Press.
"So if being grandiose or joking around or being playful is going to put you back in a place where you maybe prone to the same types of mistakes again, then it's going to delay the healing process."
The host of "The Dr. Oz Show" was commenting on the mayor's statements to the Toronto Sun this week in which he called rehab "amazing" and compared it to football camp. Oz, a cardiothoracic surgeon who often speaks about addiction and mental health on his show, said the mayor should not be making work-related calls while in treatment.
"I want to applaud the mayor for being in rehab. Some people get the message later than others, but if you get the message at all, you're still better off," he said.
"I pray that he will be thoughtful and be guided by people around him who are knowledgeable in this area, so that he'll get better as fast as possible."
There was speculation Friday that Coun. Doug Ford would provide "proof" his brother was in treatment, Oz said that as a public figure the mayor should show evidence he is in rehab while protecting the privacy of others in the facility.
The CBC reported Friday that it spoke to the doctor at a clinic that provides treatment programs for people with substance abuse who confirmed Ford is a patient at the facility. Ford's lawyer Dennis Morris told The Canadian Press the CBC report was likely the proof.
Asked if he thought Ford should step down or drop out of the campaign, Oz said that he didn't know all the details of the mayor's situation, but abandoning the race could send the wrong message to addicts.
"I would leave those decisions to him and his team, but I would think that an addict should not think that their life would be destroyed if they come out, acknowledge there's a problem and then move into treatment," he said.
"If someone like Rob Ford can go through therapy, change what he's been doing, and return to be a great mayor of Toronto, that would be a wonderful, and I think a great stimulant to a lot of people struggling."
Ford indicated last week that he would seek "immediate'' help for alcohol abuse.
Oz was in Toronto this week to promote his show, which airs weekday afternoons on CTV, and his recently launched magazine "The Good Life." After five years on the air, he said the most important thing he's learned is that the key to personal change — whether it's beating obesity, addiction or any other hurdle — is self-esteem.
"The irony of the human condition, the reason I have a show, is that even though people know exactly what to do, they still don't do it, because we haven't communicated it the right way," he said. "Convincing you that you have an appropriate opportunity, but also should have the passion, to change your life ... is something that when you hear it and you get it, you actually have to do it."
The television host best known for his "cleanses" and healthy eating tips got his start in regular appearances on "The Oprah Winfrey Show." Oz said Winfrey — whose company Harpo Productions co-produces his show — continues to be his mentor and he joked that he went to "Oprah Winfrey University."
"The most important tip she ever told me is that people don't change based on what they know. They change based on how they feel," he said. "So if you can get people to connect emotionally with what you're talking about, instead of just drilling their brains with information, they'll change."
The 53-year-old recently became a grandfather — a "terribly spoiling" one, he said with a laugh — when his daughter Daphne Oz, host of "The Chew," gave birth to a baby girl. He said that helped him recognize the importance of self-esteem in personal growth.
"I realize how sacred and unique life is and I'm reminded of it when I look at her. Many of us forget that beauty of how people felt when we were born," Oz said.
"If you rekindle that passion for being the best you can be, you move from being the 30th percentile of being who you could be to the 90th percentile of who you could be, no matter what age you are."
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