Gut Bacteria Tied To Obesity May Vary With Geography

Why do obese and overweight people underestimate their food intake?

"Our gut microbes today might be influenced by our ancestors." The study appeared online this month in the journal Biology Letters. One theory is that obesity-associated gut bacteria can extract more energy from food, said Suzuki, who added that the findings suggest that what is considered healthy gut bacteria might vary according to geographic region. Study author Michael Worobey, an evolutionary biologist at the University of Arizona, said the finding is "pretty cool, but it is not clear why we are seeing the relationship we do with latitude." "Maybe changes to your gut community of bacteria are important for allowing populations to adapt to different environmental conditions in lots of animals, including humans," Worobey said in the news release. More information The U.S. National Heart, Lung, and Blood Institute has more about overweight and obesity .

Tweet Brian Wansink from Cornell University, in his book, Mindless Eating has written that even people of normal weight underestimate their food intake by about 20 per cent. He said that people, who are overweight, can underestimate what they eat by more than 50 per cent, reported. Wasink has conducted many experiments showing that people can easily be fooled into consuming more than they believe they have eaten. He said that there are many factors at play which conspire against us, asserting that portion creep is one of them. Portion creep is a term that describes the upsizing of portion sizes of food over the years.