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Dr. Jonathan Chan

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PHOTO: Stock photo of a pregnant woman standing by a window.
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Homicide is leading cause of death for pregnant women in US, data shows

PHOTO: A high school student walks down a dark hallway in a public high school in this undated stock photo.
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1 in 3 teens reported poor mental health during pandemic, study finds

PHOTO: A Black woman with black straightened hair in an undated stock photo.
STOCK PHOTO/Getty Images

Hair-straightening chemicals may be linked to uterine cancer risk, study finds

PHOTO: Center for Disease Control and Prevention signage stands outside the CDC headquarters in Atlanta, Dec. 10, 2020.
Los Angeles Times via Getty Images, FILE

CDC warns a rare condition in kids could be on the rise this fall

PHOTO: A group of teenagers are pictured texting on their phones in this undated stock photo.
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Dear parents: Here are 5 things we teens want you to know about our mental health

PHOTO: A father feeds a baby.
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Introducing your baby to food allergens, according to an expert

PHOTO: Various brands of sugar substitute packets.
STOCK PHOTO/Getty Images

Low-calorie sugar alternatives could negatively affect gut health, study finds

PHOTO: Leo Simon, age 2, covers his eyes as registered nurse Reisa Lancaster, left, administers a dose of a Pfizer COVID-19 vaccine at Children's National Hospital's research campus, June 21, 2022, in Washington, D.C.
Patrick Semansky/AP

COVID-19 vaccines for kids under 5: Pediatricians answer parents' questions

PHOTO: Justin Bieber attends the 64th Annual GRAMMY Awards at MGM Grand Garden Arena on April 03, 2022 in Las Vegas, Nevada.
Axelle/bauer-griffin/FilmMagic/Getty Images, FILE

Justin Bieber shares Ramsay Hunt diagnosis: What to know

PHOTO: Stephanie Schmidt, 30, is pictured with her son Wesley shortly after his birth.
Stephanie Schmidt

Mom of 2 battles breast cancer while pregnant