Put your money where your mouth is

Breath Test Might Predict Obesity Risk

It works by measuring bacteria balance in the gut, researchers say.
According to the findings, results from a standard breath test used to assess bacterial overgrowth in the gut can also tell doctors if you have a high percentage of body fat.
The microbiome, or the trillions of good and bad bugs that line your gut, can get out of balance. When bad bacteria overwhelm good bacteria, symptoms such as bloating, constipation and diarrhea may occur. The new study, appearing in the April issue of the Journal of Clinical Endocrinology & Metabolism, suggests that this scenario may also set someone up for obesity.

I'm not sure they have the microbes or mechanism right, but this is good news for fat people.   Maybe now they will stop cutting up our stomachs.  They've been doing variations on that for a century-  they used to cut out the colon or small intestine instead.   Apparently, it also didn't help.