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David Katz, M.D.

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Chewing on the Best Diets

Posted: 01/10/2012 7:43 am

As you likely know, U.S. News and World Report released a list of "best diets" to coincide with the annual bumper crop of weight loss resolutions as the new year begins. I was privileged to be one of the 22 judges.

We worked in isolation of one another, so none of us knew what the others were thinking. This is good in some ways, because our opinions were unbiased by one another's passions or pet peeves. But it is bad for the same reasons. Anyone who has seen any version of 12 Angry Men knows how potent, and valuable, an exchange of ideas can be.

Be that as it may, we submitted our reports independently. Each of us based our judgments of each of 25 diets in seven different categories on published papers, online materials, and personal clinical experience. U.S. News and World Report submitted very helpful summaries to us, including links to recent and important studies -- but we were encouraged to go beyond this material, and I am confident all of us did.

I get the sense we agreed more than we disagreed, and am fairly comfortable with most of the outcomes. That said, the results represent the panel's consensus and don't correspond perfectly with my worldview -- nor, I suspect, with that of any of my colleagues.

Overall, the rankings were a ringing endorsement of balanced, sensible approaches to weight control. No diet based on a gimmick or on wild distortions of a healthful dietary pattern scored well. Those diets that did score well were generally conducive both to losing weight and finding health. Big winners included Weight Watchers, which came in first for both weight loss and ease, and DASH, a diet developed at the NIH for blood pressure control and has since shown to confer other health benefits. The Mediterranean diet and the low-fat, plant-based diet developed by my friend Dean Ornish placed highly as well.

However, different diets did come in first for health, weight loss, diabetes and heart disease -- and personally, I find that a bit silly. Weight loss by healthy means is among the most important ways of reducing risk for diabetes and heart disease. A diet that reduces diabetes risk reduces heart disease risk. A diet that reduces risk of heart disease and/or diabetes, two of the leading public health perils of our time, is obviously good for health. A diet cannot be good for health unless it reduces the risk of heart disease and diabetes. Diets that help prevent inflammation fight heart disease, diabetes and cancer.

I trust you see where this logic leads. A good diet is a good diet, period. A good diet is conducive to health promotion, the prevention of chronic disease and the control of weight. A good diet is sensible, balanced, pleasurable and sustainable. And a good diet is suitable for the whole family so that while you are losing weight on the "____" diet, you don't have to wonder: What the heck are my kids eating?

This same logic extends from the level of diet, to foods, to nutrients. What's good for us is good for us, and what isn't... isn't. Unfortunately, physicians -- who historically are not well-trained in nutrition -- have confounded this issue pretty badly. Cardiologists have cautioned hypertensive patients against sodium intake, often overlooking the fact that an excess of sugar, starches and calories leading to weight gain would cause blood pressure to go up. Diabetics have been cautioned against sugar, but they are prone to hypertension and need to be mindful of sodium intake as well. Patients with high cholesterol have been counseled to avoid trans fat, saturated fat, and dietary cholesterol -- but excesses of sugar and salt can propagate vascular injury as well.

Health cannot be achieved, and with the exception of deficiency syndromes, disease cannot be avoided- one nutrient at a time. The overall nutritional quality of a food is what truly matters. Broccoli is not highly nutritious because it is free of trans fat; broccoli is highly nutritious... because it is broccoli!

And, of course, a diet is made up of foods. A high quality diet is made up of high quality foods -- and we do, indeed, have evidence -- in 100,000 people -- that such dietary patterns are associated with both weight control and better health overall: less cardiovascular disease, less diabetes and less risk of dying prematurely of any cause.

So we can, and should, establish some logical parameters for gauging the quality of a diet. We can, and have, devised metrics specific to that mission -- with newer and better ones in the works. But can we actually say what diet is "best"?

I have weighed in on that topic before, and basically said -- no. We have abundant evidence to support a basic theme of healthful eating, and almost none to say which of the several reasonable contenders (Asian, vegan, Mediterranean, etc.) is truly best. The logistics of a decisive trial to tell us which diet is truly best, if indeed one is, are sufficiently daunting that we may confidently anticipate doing without such evidence for the long term. Would you be willing to be randomly assigned to a vegan diet, a Mediterranean diet or a Paleolithic diet for the next 30 years? Unless a whole lot of people answer "yes," the trial we need cannot be done.

In some ways, that's good, because it means that while we do have a very well-substantiated, evidence-based theme of healthful eating -- conducive to weight control, chronic disease prevention and vitality -- we are left with considerable room for variations on that theme. There is benefit in such doubt, because it allows for customization and the indulgence of your personal preferences and priorities. You are, as you should be, the boss.

But let's be clear, there IS a theme -- and though you are the boss, you abandon the theme at your likely peril, at least in the long term. The fundamentals of the theme have been captured by Michael Pollan as well as by anyone: "Eat food, not too much, mostly plants."

Eating food means real food. Pronounceable food. If it glows in the dark, you probably shouldn't eat it. The longer the shelf life of the product, the shorter the shelf life of the person eating the product. Out just today (Jan. 9, 2012) is a paper suggesting that eating real food reduces the risk of ADHD in our kids, while highly-adulterated foods have the opposite effect. Science, meet intuition!

"Not too much" might seem like hard advice to take, but quality control provides for quantity control. Many processed foods are of the "betcha' can't eat just one" variety -- and specifically engineered to be so. Wholesome foods -- an apple, for instance -- are of the "betcha' won't eat more than one" variety. In fact, I've recently learned of a mom who lost 115 lbs. due almost entirely to use of the NuVal system in her supermarket, and simply trading up to more nutritious choices in each aisle. By addressing quality, quantity and weight mostly took care of themselves.

"Mostly plants" is pretty straight-forward. An emphasis on plant foods is evident in almost all diets associated with both weight control and health, and is, into the bargain, important for the health of the planet. Ultimately, being thin and healthy won't count for much if we don't still have a viable planet to call our own.

As noted, Weight Watchers won the laurels in several of U.S. News and World Report's categories: best for weight loss, best commercial program and easiest/most convenient. I am a proponent of Weight Watchers because their programming clearly works for weight loss (on the U.S. News site, each diet now has statistics attached to it, and those reporting Weight Watchers worked for them outnumber those who say it didn't by two to one; the ratio is just about the converse for every other diet on the site!), is sensibly aligned with healthful eating and provides the structural support many people need.

I believe, however, we can do even better -- building skill power systematically and comprehensively to facilitate lifelong health and weight control, while addressing the needs of all family members at once. A program I have helped develop, Weigh Forward, is an example. I also see opportunities for customizing variations on the theme of weight control based on genetic testing, especially for those who find they are unusually weight loss resistant -- an idea that is just now ripening into real utility.

As we size up best diets at the start of a new year, we can celebrate the winners -- but note that too many of us are still losing. A majority of adults in the U.S. are overweight or obese -- as our far too many of our kids. Our best efforts to date are not good enough.

What would truly be best is modifying the world -- so that eating well and being active simply prevailed. While waiting for that change -- or better, while working for it -- the best diet is bounded by considerations of not just losing weight, but finding health; not just you, but your family; not just now, but lifelong. Within the bounds of that theme, there is plenty of latitude for you to be the boss, and choose the best way forward for yourself and your family. Out of those bounds is a whole world of hucksterism and potential hurt. So I, and 21 other judges, encourage you to play inside the lines.

-fin

For more by David Katz, click here.

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Dr. David L. Katz; www.davidkatzmd.com
www.turnthetidefoundation.org

 

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11:24 PM on 01/16/2012
You recommend weight watchers and the diet from your "good friend" Ornish? What a shock! Instead of just beating around the bush, you could just tell folks to eat real food! If you eat a diet that is high in quality and gets you all the nutrition you need to support your body, you will not crave food in excess. Pretty darned simple! The only one of those diets you rated that does that is the paleo diet. Care to tell everyone where you placed that one on the list? So you can't make any money recommending that diet! So what! Every person on that panel has zero credibility with me because they truly believe they know better than nature what is better for a human to eat. Good luck with that! Why don't we start with the basics? Three words: "fat soluble nutrients".
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IndyvoterRob
Proud NRA Member
03:57 PM on 01/15/2012
Where do sliders fit into all of this?
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DavidMG
OWS Senior
02:22 PM on 01/14/2012
Take a look at nutritionist authored "The Healthiest Diet in the World." The popular press didn't relate to it because there are no gimmicks just good ideas backed up by science (50 pages of journal articles.) Dr. Andy Weil liked it.
09:46 AM on 01/12/2012
Eat more possum and get off the sofa. Go for a walk, ride a bike, do something other than watch TV stuff your face.
08:48 AM on 01/11/2012
I appreciate this article for the behind-the-scenes look at the way the diets were rated in the US News and World Report article, which I read when it came out. Also, I completely agree that a balanced, healthy diet is best-once you are at a healthy weight.

I had to lose a good bit of weight and I did so successfully using Dukan. Now that I am at a healthy weight I eat a balanced diet and maintain it-per the program. I have had friends that have lost weight on Weight Watchers, however they have spent a ton of money in the process, some on South Beach, others by Atkins.

Bottom line is that you need to find the program that works for you, which will be different for each person, and stick to it. Once you are at your goal, maintain it with a balanced eating plan. No one should be on a diet forever.
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Yvonne Serocki
wellness is inspired
11:17 PM on 01/10/2012
Go inside, place your hand over the middle of your chest, breathe in and out of your heart center. Rest in the place where you are connected to all. Ask what your body needs to be ultimately healthy. Be present to your body wisdom. Pay attention to how you feel before and after eating certain foods. Be conscious and awake; make space for your intuition to guide you towards the best foods for your individual needs and lifestyle. Be free, enjoy life, stop dieting, and start listening to your inner wisdom! First of all love yourself, be kind, gentle, compassionate, and nurturing to yourself. Ask your body what it needs and then pay attention to the answer! www.newheavenonearth.wordpress.com
07:03 PM on 01/10/2012
an all plant diet with a b12 supplement is hard to beat. The only reason I've ever heard to eat meat was "it tastes good." Besides the b12 there is nothing that meat gives other than clogged arteries and colon cancer.
02:54 PM on 01/12/2012
Iron too. Plus, some people cannot absorb B12/iron from supplements. I had a veg friend get soo sick. She started the injections for B12/ iron, and even they didn't work.
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DavidMG
OWS Senior
02:27 PM on 01/14/2012
Sorry folks the vegan diet is not a natural diet. There is no society that has ever naturally developed a vegan diet.Somebody just made it up. Much more sensible is an organic, humane, vegetarian wholefoods diet which people have been practicing for thousands of years..
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DrP
08:31 PM on 01/16/2012
Since many of us are insulin-resistant and can't utilize glucose as a source of fuel, we must eat fat and a moderate amount of protein to survive. The only thing that works is an animal-based diet. I don't eat meat because "it tastes good," (although it does), but because I need it to stay healthy. My family members and I have tried various ways to follow a plant-based diet, and we simply can't do it because the carbohydrate-load is too high. The only sources of protein are also very high in glucose-producing starches.
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William Anderson LMHC
Licensed Psychotherapist, Weight Control Expert
06:06 PM on 01/10/2012
As you point out, the reason for the diet focus at this time of year is the intense interest in weight loss. For us who had developed a chronic weight problem, talking about which is the best diet is like talking about which is the best exercise, which is silly. Our problem was not in picking a diet or exercise, but in being able to stick to any diet or exercise. The problem was in self-control, exercise of will, motivation, habit --- it's psychological and behavioral. Instead of talking about which diet is best, we need to talk about how to get ourselves to control our habits instead of letting them control us.

I finally lost 140 pounds and my 25-year weight problem when I discovered the behavioral techniques I call Therapeutic Psychogenics as a behavioral therapist and addictions counselor. Please share with your readers my article about Behavioral Medicine: http://theandersonmethod.com/category/what-is-behavioral-medicine-and-behavioral-healthcare/

Best wishes for a successful, healthy and happy new year for all of us!

William Anderson, LMHC
Author of 'The Anderson Method - Secrets of Permanent Weight Loss'
www.TheAndersonMethod.com
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Konnie
GOP = GOLDEN CALF OLD PARTY
05:40 PM on 01/10/2012
address the issue please: there is no single best diet for everyone. there is no magic for everyone. we all have individual issues that should be addressed. diabetics and pre-diabetics aren't going to do well on some, gluten sensitive aren't going to win on others. low fat doesn't work for everyone. everyone is
different. we need to get over the idea of a "best for all".
05:52 PM on 01/10/2012
yeah that is tru everon is different pycnogenol benefits
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HerrMonk
Fighter, Trainer, Nat.Sec.Consultant, Libertine
07:01 PM on 01/10/2012
Yes, we're all unique magical snowflakes.
Bianca S
You can't go trick-or-treating. Ever. For a week
03:27 PM on 01/10/2012
I guess I follow a combination of the Mediterranean/Asian/French diet-tons of veggies, healthy oils, fish, clear broth soup and lean protein and I allow myselt to indulge in rich food in small portions-otherwise known as the eating healthy foods and not gorging on crap diet. I also try to eat every 3-4 hours and I make sure my dinners are lower in carbs. What I don't buy into is the American idea of 'diet food'- "healthier", packaged versions of "bad" food. Not only do these foods never taste as good as the real thing, they aren't even healthy because they are loaded with chemicals, sodium and aspertame-no thanks.
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Parkite
Still haven't found what I'm looking for
09:09 AM on 01/15/2012
F&F. Exactly. Processed food-like substances are not healthy, diet or otherwise.
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pthompson13
03:09 PM on 01/10/2012
Here is my problem, my dear hubby has put on a couple of pounds (and thinks he is fat but he isn't) and wants to eat healthier and workout. Great! Right? But he doesn't like mushrooms, green peppers (or red, yellow or any color for that matter), tomatoes or broccoli. So what kind of dishes can one make that is rich in flavor but is made without these ingredients? He does like lettuce and cucumbers but salad gets old.
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flowereater
Proceed, Governor . . .
04:08 PM on 01/10/2012
Maybe he needs to retrain his taste buds and he can only do that with practice. It might be a good time to point that out to him since he is at a point where he wants to do something.
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pthompson13
04:27 PM on 01/10/2012
He is trying to do that and has actually said, for instance, I like the taste of onions produce but does not like consistently. It is probably a sensory issue. He likes raw spinach on a salad but would not put a piece of sautéed spinach in his mouth. Do you think any of the health benefits rub off on foods like chicken if they are cooked with some of these foods LOL :)
08:41 PM on 01/10/2012
tell him to watch the documentary "Sick, Fat and Nearly Dead" on netflix to get an idea of what a juicing cleanse is.....prehaps he'll wanna give it a try.....and, regardless, it is a good movie.
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jgarma
01:29 PM on 01/10/2012
Is this really so complicated?

Don't we either know what to do to eat healthily or can quickly find out. The problem is doing it. The industrialized world is awash in manufactured, crap food and it's addictive given the fat/sugar/salt trifecta.

Eating like our forefathers, who were mostly lean, takes being attentive and committed.

How 'bout this for guidance:

1. Eat mostly foods that have high water content... if you put them in a blender, they'd make juice. (Try that with bread.)

2. Eat colorful foods. This would be in the veggie and fruit realm. Foods with color are nutrient dense.

3. Eat breakfast and make sure it has a good portion of protein. In fact, try to have every meal contain protein, complex carbs (beans, legumes, whole grains) and healthy fat (avocado, omega-3 like flax seed/flax seed oil, fish oil).

4. Plan your snacks, so that in between meals you don't scarf garbage.

5. Drink as much pure water as you can, and if you need to reduce calories consumed, drink at least 8 oz of water within 15 minutes of your meal.

6. Stop eating before you're full. Don't worry... there's more food right around the corner.

Well, I could go on, but if interested check out this link http://wp.me/pA04z-CG for some food tip resources, such as "A Blueprint for Eating Right". and "10 Unusual (Need to Know) Tips About Losing Weight" (an entertaining, insightful British documentary).
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01:25 PM on 01/10/2012
Best Diet?? Follow the MONEY. I learned some years ago that the best diet for ME (I can't speak for anyone else) is based on a Hunter/Gatherer diet: Fruit/Vegetables/Meat/Game/Eggs/Nuts and Seeds. When I stay away from Grains/Beans/Dairy...inflammation goes down and accompanying symptoms: Asthma, Obesity, Fatigue, Aches and Pains, go away as well. Don't listen to the hype! Find what is best for YOUR body.
12:41 PM on 01/10/2012
I agree with the Asian and Mediterranean working the best. I have made myself into a guinea pig over the last year and have lost 60 lbs using various diets. I spent 2 months on both Asian and Mediterranean diets and lost 25 lbs. What I love about those diets is there is no calorie counting whatsoever and they aren't restrictive. I'm never hungry. I can't say the same about Weight Watchers. When I was on it, I was hungry all of the time and only lost 5 lbs over the course of 3 months. The Asian/Mediterranean diets are so fantastic because the food is so delicious. This has turned entirely into a lifestyle change. My wok is my new best friend. I am in love with all of the exotic spices and ingredients- lemon grass, red thai curry, fresh ginger root, tumeric, coriander, etc. The food is so rich with nutrients that you get full so fast and end up eating less. It stays in your stomach longer and keeps you fuller longer. I have been on an off diets for 10 years and this is the only thing that has ever worked and stuck with me. This doesn't even feel like a diet anymore. After doing this for 2 months, I actually crave shrimp and stir fried veggies now over ice cream. Another plus is that it's really fast to cook a recipe. Most recipes only take 15-20 minutes with prep and cook time.
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Parkite
Still haven't found what I'm looking for
09:41 AM on 01/15/2012
I have long felt that one of the primary causes of obesity is eating food that doesn't contain sufficient nutrients. That you body is craving the nutrients that your food is lacking. Most people think that that craving can be filled by just more "food". Your body wants nutrients/building blocks not junk. It's just simply calories in, calories out. Scientists are finally learning that the quality of the calories is what counts. Also, the Asian, Mediterranean, and even French diets, are made up of foods that satisfy b/c of all the herbs & spices which conventional science is just beginning to understand contain vital nutrients. Their food tastes authentically good, not "forced" to trick our taste buds with salt, sugar, artificial fats, etc.
12:37 PM on 01/10/2012
I think the preoccupation with calorie counting is doing the most harm, because it obscures and exonerates the differences with processed food, i.e. "I can eat whatever as long as I watch the quantity". But from the evidence I've seen, 1000 calories of wheat and sugar will do a lot more damage than 2000 calories of protein and veggies. Framing diet advice as "insulin management" might be wiser.