This is a dangerous type of fat because it surrounds abdominal organs and is metabolically active.

CNN: When you're losing weight, where does the fat go?

It wasn't so metabolically demanding that it constituted an accomplishment in its own right.

WSJ: Plumbing the Juice Mentality

The lean patients looked metabolically similar to those who were obese, with the exception of their weight, the researchers found.

CNN: Obesity paradox: Why being thin with diabetes is dangerous

The researchers detected "abundant cellular life" which was "metabolically active", according to Alison Murray of the Desert Research Institute in Nevada.

BBC: New age of exploration in the hunt for extreme life

The large doses of fructose from both sucrose (table sugar) and high fructose corn syrup may be particularly detrimental to your health as they can cause the accumulation of metabolically toxic belly fat, cholesterol abnormalities -- including high triglycerides and reduced levels of HDL (good cholesterol) -- and nonalcoholic associated fatty liver disease.

CNN: Is drinking soda really that bad for you?