Dr. Jonathan Chan

Dr. Jonathan Chan is on ABC News. Get Dr. Jonathan Chan's latest news stories and articles, connect with millions of users and join the conversation at ABC News.

Dr. Chan's Latest Work

PHOTO: Heart rate and patient condition control monitor during surgery. — Andrii Biletskyi/Adobe Stock

Climate extremes may quietly be pushing heart disease rates higher: Study

PHOTO: President Donald Trump listens in the Oval Office of the White House, Saturday, April 18, 2026, in Washington. — Julia Demaree Nikhinson/AP

Trump tells ABC News peace agreement for Iran 'will happen one way or another'

PHOTO: President Donald Trump holds up a signed executive order in the Oval Office of the White House, on April 18, 2026, in Washington, D.C. — Julia Demaree Nikhinson/AP

Trump signs executive order accelerating research into psychedelic drug therapies

PHOTO: President Donald Trump speaks to the media before boarding Marine One on the South Lawn of the White House, April 16, 2026 in Washington. — Jen Golbeck/AP

Trump tells ABC News he thinks he can trust the Iranians

PHOTO: Stock photo of people commuting on e-bikes and scooters. — Maskot/STOCK PHOTO/Getty Images

Growing number of trauma, brain injuries linked to e-bikes and e-scooters at 1 hospital: Study

PHOTO: A person fills a glass with tap water. — Towfiqu Barbhuiya/Adobe Stock

Fluoride in drinking water has no negative effect on IQ or cognitive function, study says

PHOTO: Gynecologic Cancer Awareness with peach color ribbon — STOCK IMAGE/Getty Images

A new test could transform endometrial cancer diagnosis

PHOTO: President Donald Trump talks to members of the media aboard Air Force One en route to Joint Base Andrews, Maryland, March 29, 2026. — Mark Schiefelbein/AP

Trump touts Iran talks with hardline leader Mohammad Ghalibaf, but says 'we know where he lives'

PHOTO: Stock photo of a person smoking a cigarette. — Catherine Falls Commercial/STOCK PHOTO/Getty Images

Smoking rate among US adults drops to record low as vape use rises: CDC

PHOTO: Food for healthy brain — STOCK IMAGE/Getty Images

Healthy eating may help keep the brain younger, study suggests

PHOTO: Stock photo of a pregnant woman embraced by a man. — Abraham Gonzalez Fernandez/STOCK PHOTO/Getty Images

Pregnancy outcomes could be significantly impacted by men's health, study suggests

PHOTO: A woman with allergies in an undated stock photo. — STOCK PHOTO/Adobe

Is allergy season worse this year? What to know, how to get relief

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