This weekend on "Sanjay Gupta MD," Dr. Gupta takes a critical look at sugar and the impact it has on our bodies. Don't miss the in-depth investigation Saturday at 4:30 p.m. ET, and Sunday at 7:30 a.m. ET on CNN.
Pushing her meal cart into the hospital room, a research assistant hands out tall glasses of reddish-pink liquid, along with a gentle warning: "Remember, you guys have to finish all your Kool-Aid."
The participants are part of an ongoing study run by Kimber Stanhope, a nutritional biologist at the University of California, Davis. Volunteers agree to spend several weeks as lab rats: their food carefully measured, their bodies subjected to a steady dose of scans and blood tests. At first, each volunteer receives meals with no added sugars. But then, the sweetened drinks start showing up.
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