I wonder how much of most doctors' advice is equally wrong, outdated, etc. And how many studies are flawed; the studies that are the basis for what is right.
Dr Oz's incentives are different. He's a day-time television talk show pundit. Fad diets that inspire false hope and supporting big time health/vitamin company brands directly translate into him making tons of money. I don't think most doctors are compensated for this type of behavior.
True, this is similar to the classic question as to why does a top-of-their-game baseball players make millions of dollars while top-of-their-field-<doctors/engineers/etc> don't make a similar amount.
The reason is because their skill set reaches hundreds of thousands of people while a doctor/engineer can only reach maybe a thousand. The rationalization is they can reach a massive amount of people and their effect on the world is much broader (regardless of having a higher impact).
I honest have never seen a Dr Oz show but I know he has a broad audience therefore he should have a much much higher level of scrutiny than any other doctor.
Regardless the OP's question is still valid, if only the goal is to improve upon the output of the science.
No, their motivations are far more varied and far less clear.
While I certainly don't subscribe to anything so foolish as wholesale dismissal of the entire establishment, it's not as if every medical professional came out of a factory with no bias, flaws, or even fully developed critical thinking skills.
The domain of Dr Oz's advice is also going to be different from a lot of general practitioners. While most doctors will spend most of their time giving out standard advice for routine conditions, Dr Oz will jump on a new fad each week, because he is producing entertainment and routine is not entertaining. Dr Oz will launch a campaign about how apple juice is poison, while most doctors will be giving out advice like "Your blood pressure is too high. You should try X, Y, Z to lower it."
I wouldn't say he's a quack -- that implies incompetency. Dr. Oz is actually one of the best heart surgeons in the country, it's rather just that he sold himself for money.
"This knee arthroscopy will help your osteoarthritis of the knee"
"I don't have to count my tools before and after surgery"
"Try these antibiotics for your mild ear infection"
"Stomach ulcer cannot possibly be caused by bacteria"
There are plenty of doctors who were against the MMR jab - some of them wanted to give single immunisations while others were okay with no immunisation.
There are homeopathic hospitals.
Doctors are just human and are subject to the same biases as everyone else. That's why organisations like CDC or NOCE exist - to make sure people follow evidence based guidance. It's why we need well run trials - or preferably meta analysis of several well run trials.
Or that many doctors aren't up to date on the latest research and also have a tendency to give in to the same misconceived notions about health as some of their patients do. Especially in non academic settings.
Most of his recommendations are probably binary (eat red meat / don't eat red meat). Given that, 50% is what you'd expect from a random medical advice generator.
Duh. I have parents that've been watching his show for years and I can almost guarantee they're not anywhere close to where they need to be in terms of health goals.
People who watch this show are the same people who drink diet soda and eat sugar-free cookies, brownies, and let's not forget, low sodium bacon. In other words, people who don't understand that those things aren't bad for you in moderation...
Nothing says fucked like eating a crate of gluten-free cookies.
There's one great American doctor, David Perlmutter whose advices are remarkable and in his book Brain Grain it's stated that Dr. Perlmutter serves on the Medical Advisory Board for The Dr. Oz Show and that he appeared on those shows several times. That's an important reference because Perlmutter is one of my most favourite doctors.
I personally don't watch Oz's TV programs often, but in Washington Post's article, it's underlined that "OZ's advices are not backed up by medical science" But wait, is the medical science itself 100% reliable? Oz at least presents the medicine in an entertaining manner and many of his viewers take his advices with that in mind, for instance me I take his shows lightly just as I take the unshowy doctors advices lightly. Just one video by an undoctor called "Lemon Juice & Apple Cider Vinegar - YouTube" is more beneficial than "medical science" to me and the quick scientific proof included.
Is this surprising? There is lots more money to be made if you push snake oil for the snake oil manufacturers. And hey the placebo effect will give you some 'success' either way right?
We live in a world where doctors get kick backs from pharmaceutical companies for prescribing their drugs, what did we expect?
Professional organizations and licensing boards need to stand up for the integrity of their professions. Revoke his medical license and start to clean up this system.