Oz told the panel that he does use "flowery language" to describe certain products on his show but added he believes in them so much he has given them to his family.
"My job, I feel, on the show is to be a cheerleader for the audience, and when they don't think they have hope, when they don't think they can make it happen, I want to look, and I do look everywhere, including in alternative healing traditions, for any evidence that might be supportive to them," Oz said.
"Thanks to brand new scientific research, I can tell you about a revolutionary fat buster," Oz said on his show in November 2012with the words "No Exercise. No Diet. No Effort" on the screen behind him. "It's called Garcinia cambogia."
A 1998 study of 135 participants found Garcinia cambogia did not significantly help people lose weight any more than a placebo. But a2013 meta-analysis of Garcinia cambogia studies hedged on the supplement's ineffectiveness, saying its weight loss benefits "remain to be proven in larger-scale and longer-term clinical trials." Whether it helps people lose weight or not, the Garcinia cambogia does not seem to be unsafe to use, some other studies say.
Oz testified Tuesday that he could not be held responsible for what certain companies say online about the products. He said he's toned down some of his language and will publish a list of products he thinks really can help people lose weight.