Dr. Jonathan Chan

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PHOTO: A person collects rubbish on a beach. — Stock Photo/Getty Images

Coastal areas with high microplastic levels linked to higher rates of diabetes, heart disease, stroke

PHOTO: Israeli Prime Minister Benjamin Netanyahu speaks with ABC News, June 16, 2025.

Netanyahu tells ABC he's not ruling out taking out Iran's Supreme Leader Ali Khamenei

PHOTO: Ananda Lewis visits Hallmark's "Home & Family" at Universal Studios Hollywood on March 21, 2019 in Universal City, California. — Paul Archuleta/Getty Images

Ananda Lewis chose 'natural' cancer care over conventional treatment. Many others do too -- and it's risky

PHOTO: President Donald Trump attends the Congressional Picnic at the White House in Washington, D.C., June 12, 2025. — Nathan Howard/Reuters

Trump tells ABC Israel strikes on Iran 'excellent' and warns 'more to come'

PHOTO: A person's blood pressure appears to be taken in this undated stock photo. — STOCK PHOTO/Getty Images

Exposure to 'forever chemicals' before birth linked to higher blood pressure in kids

PHOTO: Fay Brake co-owner of EJB's Gun Shop shows a pistol to customers at the store in Capitol Heights, Maryland, March 14, 2023. — Andrew Caballero-reynolds/AFP via Getty Images

Gun deaths among children surge after states loosen firearm laws, new study finds

PHOTO: President Donald Trump attends a meeting with the Fraternal Order of Police in the State Dinning Room of the White House, June 5, 2025, in Washington. — Alex Brandon/AP

Trump tells ABC Musk 'lost his mind,' as CEO's dad says 'make sure this fizzles out'

PHOTO: A vial of the measles, mumps and rubella vaccine is on display at the Lubbock Health Department, on Feb. 26, 2025, in Lubbock, Texas. — Mary Conlon/AP

Most US counties saw decline in childhood MMR vaccination rates: Report

PHOTO: A 3-D rendering shows the Covid-19 virus omicron variant strain. — STOCK IMAGE/Getty Images

Another COVID-19 variant is rising abroad. Doctors say there's no need to panic

Only 25% of moms in US report 'excellent' mental health, marking an alarming decline

PHOTO: In this Feb. 27, 2025, file photo, signs point the way to measles testing in the parking lot of the Seminole Hospital District across from Wigwam Stadium, in Seminole, Texas. — Jan Sonnenmair/Getty Images, FILE

Measles cases reach 1,046 in US as infections confirmed in 30 states: CDC

Cancer deaths tied to alcohol are rising fast, study finds

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