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Tom Crann and Dr. Jon Hallberg
ST. PAUL, Minn.

Ask Dr. Hallberg: Problems with DMAA use

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Dr. Jon Hallberg
Dr. Jon Hallberg is assistant professor in family medicine at the University of Minnesota, and medical director at Mill City Clinic. He is a regular medical analyst on MPR's All Things Considered.
Photo courtesy of Dr. Jon Hallberg

DMAA is a popular supplement with athletes, or people looking for a edge in their workout. But some side effects have the U.S. Food and Drug Administration looking into it.

Dr. Jon Hallberg is MPR's regular medical analyst for All Things Considered, with host Tom Crann. Hallberg is a physician in family medicine at the University of Minnesota and medical director of the Mill City Clinic.

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Dr. Jon Hallberg
Dr. Jon Hallberg is assistant professor in family medicine at the University of Minnesota, and medical director at Mill City Clinic. He is a regular medical analyst on MPR's All Things Considered.
Photo courtesy of Dr. Jon Hallberg