Dr. Oz says it's important to get patients comfortable enough to ask their physicians these embarrassing, awkward questions. "I'm very proud that you were honest enough to ask me these questions," he says.

Sometimes, a simple question or second opinion can lead to a lifesaving diagnosis. Over the years, Dr. Oz has offered advice on everything from heart disease to colon cancer . Little does he know, some of these segments helped save lives.

Hundreds of viewers have written in to say that something Dr. Oz said changed the course of their lives.


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