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BBC News – Bacteria find key to treating obesity without surgery

 

In the latest study, researchers compared three groups of obese mice on a high-calorie diet.

  • One group was given a gastric bypass
  • One was given a sham operation, and the high-calorie diet continued
  • One was given the same fake operation but then fed a low-calorie diet to promote weight loss

A week later the mice who had undergone the real obesity surgery had different bacteria in their guts, with an increase in types usually seen in lean individuals and a drop in types associated with obesity.

Three weeks after surgery they had lost about 30% of their bodyweight, the researchers reported in Science Translational Medicine.

There was little change in micro-organisms present in the mice who had had sham operations, even though the group on the low-calorie diet lost just as much weight as the mice who had had the bypass surgery.

Metabolism impact

Researchers then transferred samples from the guts of the three groups of mice into other germ-free mice.

Those who received bacteria from the bypass mice, lost a significant amount of weight in two weeks but the others saw no change.

It is not yet clear how the microbes influence weight loss, but one theory is that they have an impact on metabolism.

via BBC News – Bacteria find key to treating obesity without surgery.

Brain Neurons and Diet Influence Onset of Obesity and Diabetes in Mice | Neuroscience News

The absence of a specific type of neuron in the brain can lead to obesity and diabetes in mice report researchers in The EMBO Journal. The outcome, however, depends on the type of diet that the animals are fed.

via Brain Neurons and Diet Influence Onset of Obesity and Diabetes in Mice | Neuroscience News.

The Hidden Truths About Calories

How Many Calories in a Food? You Might Be Surprised

One in three Americans are obese. Processed foods, microbes, one’s immune system, and cooking methods all play a role in how many calories are derived from our food. 

One study found tha

t humans who ate 600 or 800 calorie portions of whole wheat bread (with nuts and seeds on it) and cheddar cheese actually expended twice as much energy, yes two times, in digesting that food as did individuals who consumed the same quantity of white bread and a “processed cheese product.” The end result? The net number of calories the whole food eaters received was ten percent less than the number received by the processed food eaters (because they spent some of their calories during digestion).

via The Hidden Truths About Calories.

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