Informed Comment

Thoughts on the Middle East, History, and Religion

Juan Cole is President of the Global Americana Institute

Saturday, August 15, 2009

Epic Fail: Time Magazine on Uselessness of Exercise for Weight Loss

I am sure they are smart people, but every once in a while the journalists working for the mainstream media deliver themselves of the opinion that exercise does not help you lose weight, or that, indeed, there is no way to lose weight.

This article in Time says that the reporter's friends removed the benefit of the exercise they had done by going to Starbucks afterward and having a muffin. But he implies that they are doomed to do so. No blame is laid on corporate food for America's weight problems, even though that is among the main culprits.

Losing weight is hard, but can be done. The trick is to keep it off. In one study published just last year, a group of women dropped 10 percent of their body weight. But only about a quarter kept the weight off for the succeeding two years. What was special about that 25 percent?

They exercised vigorously about 5 hours a week, and they were careful about their diet, especially about eating very much fat.

Likewise of 3,000 weight loss subjects registered at the National Weight Loss Registry who have lost at least 30 pounds and kept it off at least 3 years, 90% of them report exercising an hour a day.

In other words: Time exercise article Epic Fail.

Look, exercise and calories are not that complicated. If a man gets on a treadmill for a little over an hour at a brisk pace, he should be using 600 calories. If he also eats sensibly, and if he does the exercise at least five times a week, he should lose a pound a week. Regular exercise and eating sensibly should allow him to take off 4 pounds in a month. That may seem a pittance for someone who has put on a lot of weight, but it is 48 pounds a year, which should suffice for most people.

It is true that aerobic exercise causes you to lose muscle as well as fat, and such exercise should be combined with weight lifting to replace the lost muscle. Muscle tissue uses more calories than other kinds, and so having more of it also helps keep the weight off.

Of course, diet is also key. When you're trying to lose weight, you can't be eating muffins at Starbucks. You may crave them more, as the article asserts, if you exercise vigorously. But you aren't doomed to give in to the craving. And, there are other things that would satisfy the craving. A Starbucks blueberry muffin is on the order of 400 calories, and many of the drinks are 200 to 400. So obviously eating and drinking there carelessly would more than wipe out an hour's hard exercise. But instead, you could have a tall non-fat capuccino for 100 calories and a biscotti for 160, coming in at 240 total, and preserving 360 of the exercise savings. If you were hard core about losing weight, you could just have the coffee of the day or a cafe Americano, which have hardly any calories at all, and some fruit. Or you could stop at a soup and sandwich place instead of Starbucks, and have a cup of lentil soup for 200 calories; that dish is high in protein, which is what your body is really craving after hard exercise, not muffins.

What the Time article neglects to note is that how many calories you take in at Starbucks only matters in the context of your total intake for the day. If you eat a lighter than usual lunch, then the 240 calories picked up at Starbucks might not matter very much. Especially if you are exercising about an hour a day.

Most people aren't good at translating their pangs into wise choices because they haven't educated themselves about processed foods served them by corporations and restaurants. The body also plays tricks. Sometimes you feel hungry when you are really just thirsty, and drinking some water would be enough.

When you talk about avoiding too much fat, it sounds puritanical and as though we are stuck with celery and raw broccoli. But avoiding fat is mostly a matter of reading the labels of the things we buy in the grocery store. The main problem facing Americans in particular with regard to the obesity epidemic is that our processed food sold to us by our corporations is typically unhealthy. I had my gall bladder out a few years ago and before the operation was put on a nonfat or very low fat diet. I thought, well I'll make myself some spaghetti with tomato sauce. So I went to the grocery store and checked the spaghetti noodles, and they were loaded with fat. Then I checked the pre-made tomato sauce and it was floating in fat. Now, I don't think wheat and tomatoes have a lot of fat in them naturally. It is being added by the corporations, just as high fructose corn syrup is being added, because fat, sugar and salt make food addictive for consumers, and they want to sell us as much food as they can.

I personally think that the Atkins low-carb diet works for a lot of people mainly because it makes them avoid processed carbohydrates like cereal and pasta that have had fat and sugar poured into them at some factory. It would certainly make them avoid the Starbucks muffins and (worse) scones.

Exercise also has many health and cognitive benefits, including in fighting cancer and Alzheimer's, quite apart from the weight issue. And, most people don't realize that if you don't do resistance training such as working with weights, after age 45 your muscles will turn to jelly. I was outraged when I discovered this datum at age 47, because no health care provider had ever warned me about it. Luckily, the deterioration of the muscles can be reversed with weight training. Running or playing tennis won't help with this loss of muscle mass, it has to be doing curls. Otherwise, muscles deteriorate and fat increases, which is easy since muscle tissue uses more calories than other kinds, and you have less of it as you age unless you work out.

The science on all this is perfectly clear. Vigorous exercise (both aerobic and resistance training) combined with a low-fat diet is what allows people to take weight off and keep it off. Time is shockingly wrong.


End/ (Not Continued)

30 Comments:

At 4:41 AM, Anonymous Anonymous said...

I haven't read the article, nor do I intend to, but I sympathize with it.

The energy in food is immense, and light exercise needs little. This is physics.

For example, lifting 100kg (220lb) 2 meters (above your head and arms strethed) is worth 2kJ: a mere 1/2 kCal (aka as Calorie in food circles.) A small bag of nuts supplies enough energy for 1000 such lifts. I do not know where you get 600 kcal per hour on a treadmill but it is unlikely.

However, exercising is absolutely essential for good health, and if one builds muscles then that is healthy weight.

Metabolism, the activities to keep us alive, is the biggest consumer of energy for most people, and light exercising is dwarfed by it.

People can burn a lot of energy by non-stop fidgeting, but that is many hours every day.

Another big consumer of energy is heat generation. Feeling a little cold, but not dangerously so, can burn a lot of extra energy. Also drinking copious quantities of cold water.

 
At 5:55 AM, Blogger jeppen said...

I agree on most of this, but low-fat diets are not necessary, neither are aerobics. A high-protein diet, muscle-training and a calorie deficit are the important components of a successful weight-loss program. Anything else is icing on the cake, which you may do if you have time.

 
At 6:12 AM, Anonymous Bob Spencer said...

You said something about how it is hard to keep the weight off after you lose it. Well, if you exercise, you just keep it up. Do something you like. When I am not sitting at the computer, I am working in a bike shop or riding my bike or doing something. The other guys that work in the bike shop race. They actually have problems eating enough. Pro racers burn as much as 7,000 calories a day. They tell me that glazed donuts are a health food.

Bob Spencer

 
At 6:19 AM, Anonymous Anonymous said...

Dr. Cole,

At Starbucks, keep away from the nonfat drinks and baked goods entirely. Instead, try the Breve Latte, with no sweetener - and they sell pretty tasty nuts.

You are right about sugar. But fat can give you the energy you need to exercise - if you stay away from the carbs. Sorry, but it is the nutrition "science" establishment that has made the epic fail on this one. Read the Gary Taubes book on this (not his pop science articles).

That said, I'll do my best to follow your good advice on the curls. :(

 
At 7:58 AM, Blogger InplainviewMonitor said...

Failed exercise does not work, neither failed reading, writing or anything. The fact that Time does not realize this, is quite sad.

If Time don't make sense on an simple issue like this, how can one trust their judgment on more advanced issues?!

 
At 8:20 AM, Blogger Judith Weingarten said...

Good stuff and important, but where did you get this factoid: Running or playing tennis won't help with this loss of muscle mass, it has to be doing curls. I'm 69 and wouldn't lift a weight if it fell on me, but have been playing tennis forever; my muscles are just dandy, thank you.

 
At 9:55 AM, Anonymous Anonymous said...

David Kessler's The End of Overeating has a nice summary of the science of the corporate selling of food addiction and what to do about it. He calls the current form of food addiction "hypereating" and once you understand the details of the science behind it, many things get clear.

 
At 9:59 AM, Anonymous Jerry Elsea said...

Juan is right on target here -- especially in regard to weight-resistance training. Muscle-specific exercise will grow the muscle no matter how old the muscle.
I convinced my father of that fact when he was 97. He enjoyed the last year and a half of his life working out with light hand weights. Notice, please, the word "light." Adopt a tough regimen and you could end up injured, thus unable to work out at all. Embrace a relatively light routine and you can move gradually into heavier weights.

As for the Time article, I haven't read it. But, as Juan advises, just do the math: Burn more calories than you ingest and you lose weight. Where most suddenly health-conscious people go wrong is in not realizing the fat content of many foods.

It isn't easy keeping your weight under control, especially if your body type doesn't lend itself to quick success (a topic for another day). But think how much easier it is now than 50 years ago, when I was entering manhood and Juan Cole was in knee-pants. Imprecise food labeling led many conscientious exerciser astray.

Incidentally, for a relatively low-cost exercise apparatus I recommend the Total Gym, as advertised on TV by Chuck Norris. You needn't agree with his politics to benefit from his sensible workout recommendations.

 
At 10:04 AM, Blogger ~aew said...

The mainstream media is owned by whom? Their goals are to continue myth making and generating many $$$ for the mother ship company.

Thanks the interesting morsel, professor (pun intended)

 
At 11:28 AM, Anonymous Dermot M (no too obvious) Dmoloney (much better) said...

I also thought the TIME article was ridiculus, I remember glancing through it shocked at the idea that exercise was pointless in terms of losing weight but only a few paragraphs down it said it was only pointless if you eat a ton of junk food afterwards, talk about stating the bleeding obvious, ive been on the dole for a while since I finished college and developed a bit of a gut from doing nothing all day,two months of exercise and careful eating and the gut is now history.

 
At 11:44 AM, Blogger Katy said...

For a more sophisticated understanding of the endocrinology involved check out Dr. Diana Schwarzbein's books (the principle, the program, the transition). For the most part you are right, but fat is not the problem.

The problem with exercise for weight loss is that exercise makes people hungry. Of course, exercise is good for it's own sake and as you say building muscle mass.

As one of those who did lose a lot of weight and didn't keep it off and who is stuggling to start over it's good to know about exercise and continued vigilance as being keys to keeping it off. For one thing when you are working out you aren't eating or even thinking about it. But there are other important factors as well, generally speaking stress reduction or mitigation.

 
At 12:10 PM, Blogger Walking Wounded said...

Moderation in the good things (water, natural electrolytes, slow food, fun, exercise) and near abstinance from the worst corporate junk food- aspartame/HFCS sugar drinks, industrial deep fry, chips. Just don't buy them.

Bonus question 1: Which 2-time SecDef made his first fortune gaining FDA approval for Aspartame?

Bonus question 2: How does pandemic levels of type-2 diabetes and associated medical cost relate (epidemilogicaly) to high fructose corn syrup (HFCS) and chips as American food staples?

Bonus question 3: What do Turkeys, beef cattle and American-style diet have in common?

Muscle mass is useful, attractive, burns calories just by existing. Stretching slowly and patiently (yoga) is a form of weight training that maintains flexibility, reduces sports injury.

The very best exercise is working a veg garden. A window-box herbs or patio micro-garden will start to get the mental pathways oriented. Lay off the chemicals.

 
At 1:58 PM, Anonymous Anonymous said...

I am glad to see such an article here.

Protein vs. Carb issues, I have found that many people choose a vegetarian diet for good health and weight loss. Your body actually needs carbs, they play a role in the metabolic function. As well as the proteins, that are more difficult to add for vegetarians. The best diets are those that are balanced and included proper portions.

I loved your mention of pre made tomato sauce. It is often too sweet. I was shocked by how many things include high-fructose corn syrup.

I think more could be said here about school policies. Including the financial policies that impact children's eating. For example, pop is now available in the schools often as fundraisers for the school. Kindergarten and preschool classes are supplying children with Sprite instead of Juice, and legitimizing it because sprite does not have caffeine. If you don't allow your children pop, because health care providers and dentists advise it for their health, you have no recourse. But, that is typical of any complaint parents have about public school because of the nature of the contract. Unlike private schools, parents are powerless to advocate for their children.

There is so much food targeting, and corporate money funds issues. Most schools are now using "Box tops" for fundraising, they get kids begging for the food in the grocery aisles so their class can win a "Box Tops" party. Trying pickup the boxes that have "Box Tops" and reading their ingredients.

 
At 2:05 PM, Anonymous Anonymous said...

When I lived in Europe and the Middle East, I found that not only did I seem to remain 10 lbs lighter, but one rarely saw people that were grossly obese. I always attributed that to the more pedestrian lifestyle. I think it was just having to walk in so many areas shows the importance of regular exercise.

 
At 2:27 PM, Blogger James-Speaks said...

Most of the comments agree on a few basics, eat fewer fat calories, exercise more. But there are so many possible variables in a person's condition that must be considered before embarking on a weight management program that there is no such thing as one "program fits all."

There some ideas, however, that apply for all.
(1) Avoid rapid changes in diet.
(2) Select a diet that reflects where you want to be rather than one that will cause a change from your current flabby status to one of overall svelteness.
(3) Use behavior changes to cause weight loss. Park on the other side of the parking lot and walk an extra 1,000 feet per day. Make five trips to the garbage can instead of one. Drink lots of water. Walk your dog. If you don’t have a dog, borrow one.
(4) Stretch. Stretching exercise make you want to exercise. Really.


For the young and slightly overfat,

DO NOT RESTRICT CALORIES.

This will only train your body to store more fat later in life. The best plan for the young (under 40) group is to eat healthy but increase caloric demand slowly. Walking - then jogging, rowing and biking all work. Combine with moderate weight training to increase muscle mass. They'll need it later in life.

For the middle aged:

Same general advice except get real serious about weight training for the reason Prof. Cole mentioned.

For the seriously obese:

Danger here, because insulin resistance has started to appear. The cravings after exercise are best met with water, lots and lots of water. Keep drinking water until the cravings abate. Then and only then, after a few hours, eat an adequate, well balanced meal. (See above – eat for the future, not for the change.) Satisfying the cravings with food is counter productive and will lead to weight gain and diabetes.

On days without exercise, lentils are the best food, augment with chicken livers, Brussels sprouts and apples. Really. Lentils are a diet food.

James Speaks’ bargain diet drink: Iced tea with Kool-Aid (cheap) conc. for lemon flavor. Correct dose of equal or generic. There is something in that combination that releases endorphins. Really.

About exercise for the obese: NEVER OVER EXERCISE. Always under exercise, and allow plenty of time, years, for weight loss. If it is necessary to measure progress, use a tape measure. I’ll repeat because this is also crucial:

IF IT IS NECESSARY TO MEASURE PROGRESS, USE A TAPE MEASURE.

For all groups, it is rapid weight loss that makes it hard to keep it off. Slow weight loss without drastic changes in diet (there is one exception) allows for stable weight afterwards. And remember, it is fat you are trying to measure, not weight. Use a tape measure to check daily progress.

The exception: If fast food is in the diet (McD, BK, W, KFC, TB etc etc) cease immediately. Jared and Co.’s low fat sandwiches are ok.

For all the advanced getbackintoshapboomers out there,

[brand name deleted] 2 rowing machines work magic for your aerobic conditioning. It also causes unbelievable improvements in your overall body shape.

Leg strength training causes more upper body muscle strength increase than upper body strength training.

The proper way to do strength training is from large muscles to small muscles at a resistance level that causes total failure at 10-12 reps, only one set per exercise per day, and for a really really good time, sprint 1/4 mile after.

The more fit you are, the less you can workout. Three times per week for starters, twice per week after your muscles reach 50% of their maximum potential.

You will never look like Arnie. Arnie is a freak. A politically astute, well educated, and very wise (he has regular ‘access’ to Maria Shriver, duh) genetic freak, but a genetic anomaly nonetheless. Try to look like your basic quarterback instead. It's much healthier.

Floss. Really. Gum disease is a risk factor for heart disease and type 2 diabetes.

 
At 2:28 PM, Blogger James-Speaks said...

Thank you Prof. Cole. Perhaps IC could transform into the blog for the most serious issue of the day or week. Our murderous programs in Iraq and Afghanistan require daily attention, but there is a balance that could be reached in your decision as to which topics you cover

 
At 4:03 PM, Blogger Jawad said...

I think that Prof Cole is mostly on target. The tennis vs curls thing may be true for some people. Not for me. I am 44, and I have been playing squash for 10 years now, and I have loads of new hard muscles in my lower body. I dont think I would have had the discipline to add this much muscle with weights. Curls only hit the relatively tiny biceps. Squash (and tennis and running) hit the big glutes, quads and hamstrings.

Recently I gave up traditional wights (curls etc) for Olympic style power lifting. Its been great so far, but too early to tell if I can sustain it long term.

I also enjoyed reading this book recently http://www.youngernextyear.com/

 
At 7:10 PM, Anonymous Anonymous said...

Juan, you should make an addendum after you watch this....

http://video.google.com/videoplay?docid=4362041487661765149&q=source:012674449754406386752&hl=en

 
At 8:09 PM, Blogger /greg said...

I've done this. Lost 75lbs. Gained it back. Lost it again, and then started exercising. I now workout (train) about 15 hours a week.

It does NOT keep the weight off.

What does keep the weight off is the fact that I am doing something other than eating.

 
At 9:04 PM, Blogger RLL said...

Curls really aren't a great exercise for most of us. The best single book for an intro to weightlifting is New Rules of Lifting, there is also a followup directed at some specific issues for women.

 
At 9:19 PM, Anonymous Anonymous said...

"No blame is laid on corporate food for America's weight problems, even though that is among the main culprits."

I was always sure it was the person's fault for eating that stuff. Thanks for educating me. It's good to know these people are not responsible for their own actions.

 
At 11:03 PM, Anonymous Anonymous said...

I second the motion that you read "Good Carbs, Bad Carbs" by Gary Taubes. Also endocrinologist Diana Schwarzbein's books ("The Schwarzbein Principle" and its sequels).

Some exercise is good for you, but if you exercise, you will be hungrier, and over time, it is very hard to resist hunger. Almost nobody can, in the presence of food. So, over time and on average, you will eat more to compensate for the extra calories you burn by exercising.

Even if you don't exactly match the calories you burn exercising with additional food, instead of losing weight, the net result will be that your metabolism will slow down. Just because the constraint that calories in = calories out +- calorie excess/deficit is true does not mean it is the "lever" by which to control body weight. Instead you need to "reprogram" your metabolism by what you eat, not just by how much you eat. If you eat less carbs, lower glycemic carbs, and only in combination with other foods, that will change your metabolism and you will start to eliminate your stored fat.

Dietary carbs turn into glucose and triglycerides, and increase insulin which helps your adipose tissue absorb fat (i.e., those triglycerides). Dietary fats are used for structural purposes -- our cell membranes are made of fat. You have to eat enough fat of various types!

You can lose weight without feeling hungry all the time. If you feel hungry all the time you'll eventually fall off the wagon. You have to learn to eat differently, which means eating more protein and fat, less carbs, and lean towards low glycemic index carbs in combination with other food types. Trying to lose weight by restricting calories or exercising more rarely works -- you have to eat better instead, which largely means cutting down on (not eliminating...) carbs, especially the high glycemic ones, and substituting protein and fat instead. (And eat your veggies - they have fiber, vitamins and micronutrients, and are pretty low in carbs).

 
At 12:07 AM, Anonymous Anonymous said...

Atkins works, or worked, for people mostly because you have to avoid pre-packaged food altogether. That's changed some with the agri-squidbat now churning out low carb this and that. But just about any restrictive diet that makes you shop around the far aisles of the supermarket and avoid the s*&% in between will make you lose weight. Stay on the far walls of the store, cook your own food, and you lose weight.

The other thing is, most people are basically starving from low-grade nutrient deficiencies, so they cram full of empty calories to satisfy the cravings that are never satisfied. Sadly, mainstream diet advice says "a calorie is a calorie is a calorie"...which is true, but if you're short on all kinds of micronutrients you'll start ingesting a ton of calories to compensate.

 
At 12:41 AM, Blogger Juan Cole said...

Katie, it is simply not true that exercising *causes* you to eat more calories than you burn off. You get to decide how many calories you eat.

There are ways of fooling your body so as to make it satiated with fewer calories. Small snacks through the day (those Laughing Cow cheese triangles are good because the lowfat ones are only 30 calories and on a rye cracker can be filling. Unsalted almonds also work for me. Celery with lowfat dip. Small portions of fruit. And drink lots of water and things like green tea. I am not a nutritionist but I took off 40 pounds 6 years ago and kept it off, which puts me in 2 percent of the population. I know whereof I speak.

 
At 2:17 AM, Anonymous Anonymous said...

Great article, I just wanted to say that there are 52 weeks in a year rather than the 48 weeks stated (or insinuated). Seriously though, it's not important. You wrote a excellent article, very interesting and informative. Thank you.

Also, please forgive my impetuous-self. It's a horrible flaw I possess.

 
At 1:35 PM, Anonymous Alex_no said...

As far as I understood, it is widely accepted that exercising does not take off weight, though it is good for you otherwise. Only reducing consumption does.

I was interested though by the theory I read in Levitt and Dubner's Freakonomics, that Seth Roberts (www.sethroberts.net) found that sipping oil, such as olive oil, or sugar water, between meals, provided some calories without stimulating appetite. That is, you can exercise, consume that, and not feel hungry at or before the next meal.

It's an interesting idea. No idea whether it works. Could be that it has been disproved.

 
At 1:52 PM, Anonymous Anonymous said...

Oops, I said: I second the motion that you read "Good Carbs, Bad Carbs"

The full book title is actually: "Good Calories, Bad Calories: Fats, Carbs, and the Controversial Science of Diet and Health".

 
At 3:26 PM, Blogger dr2chase said...

I think there's plenty of person-to-person variation in how much your stable weight moves when you add exercise, but at least for some of us, the change in blood chemistry is just as important as the change in weight. With 4 hours/week of exercise (biking 50+ miles), the thing that changed least was my weight (5%). Good cholesterol, bad cholesterol, triglycerides, everything else moved by larger amounts, and in the right directions.

"Mindless Eating" by Brian Wansink is a good place to learn about how to reduce your food intake without "suffering" -- undo the tricks that help you eat more, add some tricks to help you eat less.

 
At 1:08 PM, Anonymous Anonymous said...

I feel like the Time article will be an excuse for those who are overweight and unhealthy. The article will encourage sitting on the couch vs. getting up and exercising. Ridiculous piece of journalism!

 
At 5:48 PM, Anonymous Anonymous said...

Jumping into this late... but to each their own.

If you have small children, the activity of picking them up 20 times a day will be a workout. Doing a push up with them on your back is a workout. Walking the stairs at work is a workout.

The key to any of this weightloss and keeping it off is breaking the habit.

Whatever the habit might be that slows you down, for instance not taking the bus because you have to walk 4 or 5 blocks is enough for me to start my car, but if I take the bus twice a week, I just put in some exercise.

Basically, DO NOT LET THE MACHINE WIN!

You can create strong muscles with just resistance training. Either with your own arms/legs, or hire your local big dog to tug on a rope for a few minutes every night. Just don't use a lot of ranch dressing on the salad/cheese fries at dinner.

Oh yeah, also, do not eat at regular meals. Eat when hungry, and eat small filling portions. Even if you eat 8 times a day, but only a half a sandwich, or part of a salad, your body will burn that a lot faster, then tap into the reserves (fat) for a little pick me up.

Thanks for the discussion.

 

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