Marie McCullough covers health and medicine, with a special focus on cancer and women's health issues.

Latest Stories

As more pregnant women use marijuana, a new study finds risk to babies

Marijuana is increasingly socially acceptable and legal. Experts say that doesn’t make it safe for use in pregnancy.

FDA warns about a dietary supplement that can be dangerous for pregnant women

Vinpocetine is the latest dietary supplement to raise safety concerns.

How conquering a rare leukemia in children revolutionized cancer care for millions

Behind the high cure rates for pediatric leukemia is an amazing story that transformed the whole field of cancer treatment and research.

Health officials warn of hepatitis A exposure at a Dunkin’ Donuts in South Jersey

The best way to prevent hepatitis A is to get vaccinated.

Antiabortion activist sues to get Pennsylvania providers’ identities

Abortion providers are subject to harassment and even violence. A Pennsylvania Commonwealth Court panel has to decide whether that troubling reality means state public records should keep providers’ identities confidential.

After Trump administration’s restrictions on fetal tissue research, consider these important scientific advances

Fetal tissue research has yielded advances — particularly vaccines — that have saved lives and helped decipher biological mysteries.

White infants in rural Pennsylvania especially hard hit by opioid crisis, data suggest

After steady increases for 17 years, the annual rate of newborns suffering from drug withdrawal in Pennsylvania seems to have leveled off. But it remains alarmingly high.

Did legalized abortion cut U.S. crime rates? Decades-old debate gets a reboot.

Those who doubt the abortion-crime theory acknowledge that other explanations — including better policing, more imprisonment, the war on drugs, a strong economy, gentrification, immigration — also have weaknesses.

Nick Foles’ wife, Tori, reveals she had a miscarriage. What you need to know about pneumonia during pregnancy.

Pneumonia is of special concern in pregnancy because the woman’s immune system is tamped down to protect the fetus, explained Adeeb Khalifeh, a maternal-fetal medicine specialist at Einstein Medical Center in Philadelphia.

New treatment guidelines for children with a once-fatal type of leukemia

Cure rates for a form of pediatric leukemia have risen from zero to 90 percent. New guidelines will help ensure optimal treatment.