Each morning after breakfast, Scott Broadbent takes a plastic bottle from the refrigerator in his home in Alameda, Calif., pops the top, and drinks the contents, 2.5 ounces of milky liquid. “It has sort of a pineapple creamy flavor,” he says. “It’s really not bad.”
The bottle might contain ketone ester, a supplement meant to help the body burn fat instead of carbohydrates. Researchers are now testing whether it might also slow the aging process. Or Broadbent might instead be getting a placebo. He is part of a clinical trial at the nearby Buck Institute for Research on Aging to assess the supplement’s safety and side effects in older adults.
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