Journalist Gary Taubes created a stir in 2007 with his impressive but daunting 640-page tome Good Calories, Bad Calories. Now he has written a shorter, more accessible book Why We Get Fat: And What to Do About It to take his message to a wider audience. His basic thesis is that:
– The calories-in/calories-out model is wrong.
– Carbohydrates are the cause of obesity and are also important causes of heart disease, type 2 diabetes, cancer, Alzheimer’s, and most of the so-called diseases of civilization.
– A low-fat diet is not healthy.
– A low-carb diet is essential both for weight loss and for health.
– Dieters can satisfy their hunger pangs and eat as much as they want and still lose weight as long as they restrict carbohydrates.
He supports his thesis with data from the scientific literature and with persuasive theoretical arguments about insulin, blood sugar levels, glycemic index, insulin resistance, fat storage, inflammation, the metabolic syndrome, and other details of metabolism. Many readers will come away convinced that all we need to do to eliminate obesity, heart disease and many other diseases is to get people to limit carbohydrates in their diet. I’m not convinced, because I can see some flaws in his reasoning. Read more »
“Domestic winter indoor temperatures” appear to be rising, the researchers wrote, as is obesity. They focused on a causal link, focusing on acute and long-term effects of being comfortable in the winter.
They write: “Reduced exposure to seasonal cold may have a dual effect on energy expenditure, both minimizing the need for physiological thermogenesis and reducing thermogenic capacity. Experimental studies show a graded association between acute mild cold and human energy expenditure over the range of temperatures relevant to indoor heating trends.”
They also look at brown adipose tissue (BAT), aka “brown fat,” the type of fat that actually consumes energy instead of stores it. We all have this fat as infants, to help us regulate our body temperatures until our bodies learn to do it on their own. The researchers suggest that “increased time spent in conditions of thermal comfort can lead to a loss of BAT and reduced thermogenic capacity.”
Determining a link “may raise possibilities for novel public health strategies to address obesity,” although I shiver to think what those strategies might entail.
*This blog post was originally published at ACP Internist*
Haven’t we all learned that breakfast should be our biggest meal? “Start the day with ‘fuel’ and you can burn it off as the day goes on.” “Eat a big breakfast and you’ll eat fewer calories all day long.”
This advice is probably not true, and in fact a new study published in the January 17th issue Nutrition Journal shows that people ate the same at lunch and dinner regardless of what they had at breakfast. If a person ate 1,000 calories at breakfast (which is easy to do with bacon, eggs, toast, hashbrowns, and juice), he or she had a total increase in calories eaten throughout the day by 1,000 calories.
This doesn’t mean we should be skipping breakfast. The problem may be what we historically think of as an “American” breakfast. It might have worked for the farmer in the past or the laborer hauling lumber, but it’s just too many calories for our current level of activity. Read more »
Emerging economies must act immediately to halt rising obesity rates before the epidemic becomes as severe as it is in first-world countries, according to new report by the Organization for Economic Cooperation and Development (OECD).
The OECD report was published in the Lancet. It characterizes the prevalence of obesity in Brazil, China, India, Mexico, Russia and South Africa. Obesity rates were found to vary dramatically across these six countries. In Mexico, a stunning 70 percent of adults were reported to be overweight or obese. Nearly half of all Brazilians, Russians and South Africans fell into these categories. China and India had a lower prevalence of overweight and obesity, but were moving rapidly in the wrong direction, according to the OECD.
Developing nations don’t have enough resources to handle the health consequences of obesity, which include an increased risk of cardiac disease, stroke, cancer, diabetes, arthritis, and disability from all causes.
The first week of January was full of news reports of giving advice on your new diet and exercise program to help you lose the weight you’ve always wanted to. In a previous post and video I talk about some do’s and don’ts when planning for your weight loss New Year’s resolution.
In the video below, I talk about some medical issues to keep in mind before starting your program. For example, do you have a family history of medical problems like high blood pressure or diabetes? If so, you may want to schedule an appointment with your personal physician before jumping on the diet and exercise bandwagon.
If you find this video helpful, I invite you to check out other TV interviews at MikeSevilla.TV. Enjoy!
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Journalist Gary Taubes created a stir in 2007 with his impressive but daunting 640-page tome Good Calories, Bad Calories. Now he has written a shorter, more accessible book Why We Get Fat: And What to Do About It to take his message to a wider audience. His basic thesis is that:
