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Most of these studies only manage to get people to add about half an hour. It’s very hard to get anybody to add an extra hour a day. One hour a day of exercise, that’s about the absolute most you can get anybody to do in an exercise intervention study, and that’s a huge thing. There have been about 50 exercise intervention studies that have looked at how much body fat changes when you introduce exercise for the long term, and this line here is the slope of the relation between exercise and body fat, the same slope for women and men. So energy expenditure – the trouble with increasing energy expenditure (exercise) is it doesn’t work. We can increase our energy expenditure – there has been a lot of government advice on increasing energy expenditure (exercise) – or we can reduce energy intake. If we want to lose weight, there are a few ways we can classically consider it. If we expend an average 2200-2300 calories - as long as what we eat equals what we expend, we maintain weight and everything is good.
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I’m going to talk about the theory of weight control and then talk about where we need to go from here. We haven’t been going out eating and indulging in wonderful food to do this to ourselves. This is high fructose corn syrup and oil. This isn’t high living that’s made us fat. Ice cream and frozen dessert consumption actually decreased 13 percent. What didn’t increase was all the good stuff: Beef, seafood, candy, chocolate, chips and cream have all been flat. Four more things contribute a bit more: flour, cheese, shortening and edible beef tallow. Two foods account for most of this increase. What have we eaten? This information is from the USDA. And I’ll go back to the underlying reasons for that. And you don’t have to go much further than to see why are we fat. Today our estimated food supply is 464 calories per day more than it was in 1975. The USDA has a per capita food consumption corrected for waste – back in 1975 our food supply was 2100-2200 calories per person/day.
#Eating healthy and lose weight no gimmicks how to#
How did we get here? We’re going to talk about how to deal with it, but let’s just start off with food. This is big money that we’re talking about. If we were to solve the obesity problem, you could significantly change our country’s economics. Consumers spend an additional $35 billion. The cost of Medicare and Medicaid and estimated lost productivity from obesity comes in at about $90 billion or so a year - and those are actually the figures from a few years ago. People are suffering from this and it’s a very expensive problem. They would rather be deaf, they would rather be blind, they would rather have diabetes. If you ask an extremely obese person whether they would rather be obese or blind or deaf or have diabetes, predictably they would have anything rather than be obese. Americans are very unhappy with their weight. In any one year, 51 percent of adults attempt to lose weight. And the rate of childhood obesity continues at horrible proportions. Two thirds of us in America are overweight.
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The emotional and economic cost of obesity Roberts takes the podium at 1:40 in the video. Roberts brings scientific rigor and common sense to the weight loss conversation.ĭon’t worry, the sound improves dramatically once Dr. Roberts gave in Boston at the Human Nutrition Center on Aging, Tufts University. This is an enhanced transcript of the talk that Dr. Obesity today is a problem that’s completely out of our control. Weight loss without gimmicks, or Weight loss that works!