Dr. John Byun

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Dr. Byun's Latest Work

PHOTO: People workout at a gym. — STOCK/Getty Images

Even short bursts of exercise can reduce Americans' risk of disease and death, study says

PHOTO: A woman eats a blackberry in an undated stock photo. — STOCK/Getty Images

Could tooth-mounted trackers be the next fitness wearables?

PHOTO: An undated stock photo of a doctor taking a patient's pulse. — STOCK/Getty Images

Racial gap in heart health down due to declining health of white Americans: Study

PHOTO: Family members of loved ones who died in the opioid/heroin epidemic take part in a "Fed Up!" rally at Capitol Hill on September 18, 2016 in Washington, DC. — John Moore/Getty Images

Drug-related deaths are up more than 600 percent over 35 years, study shows

PHOTO: Mammographer Toborcia Bedgood prepares a screen-film mammography test for a patient at the Elizabeth Center for Cancer Detection in Los Angeles, May 6, 2010. — Damian Dovarganes/AP, FILE

Breast cancer testing may need to be tailored by race: Study

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