Coronavirus Was Already Spreading in U.S. in January: Study

More evidence has surfaced that the COVID-19 coronavirus was circulating in the United States as much as a month prior to the first confirmed local case in February, the U.S. Centers for Disease Control and Prevention reported Friday.

Genetic analysis of early cases suggests a single line of coronavirus imported from China began circul...

Protect Yourself From Sun to Prevent Skin Cancer

Headed to the beach or park for a little fresh air? Don't forget your sun protection, the American Academy of Dermatology (AAD) advises.

Skin cancer is the most common cancer in the United States, affecting one in five Americans, but many don't protect themselves from harmful UV rays.

Sixty percent of respondents to an AAD ...

Placenta's Hidden Mysteries Revealed in MRI Study

MRI imaging has uncovered key differences in blood flow to the placenta in pregnant women who are healthy and those with preeclampsia.

That could help explain why babies born to mothers with preeclampsia -- dangerously high blood pressure during pregnancy -- are often smaller and premature, according to researchers at the University o...

Very Early-Stage Breast Cancer Ups Long-Term Odds for Invasive Tumors: Study

Women with cancerous cells in their milk ducts -- also known as DCIS -- are at a high risk for developing fatal breast cancer, British researchers report.

DCIS is short for ductal carcinoma in situ, an early form of breast cancer. With stepped-up breast screening, it has become an increasingly common diagnosis.

Though it's no...

Prostate Cancer Drug Could Be 'Game Changing,' Researchers Say

For men with advanced prostate cancer, a new hormone therapy pill works better than standard injections -- and carries a much lower risk of heart attack or stroke, a clinical trial has found.

The drug, called relugolix, is not yet approved by the U.S. Food and Drug Administration. If it gets the green light, however, it would be "game-...

High-Potency Pot Tied to Big Rise in Psychiatric Issues

Marijuana has long been linked to a host of mental health risks, but the potent strains sold today may amplify those dangers, new research suggests.

"We know that people who use cannabis are more likely to report mental health problems than those who don't use cannabis, but we don't fully understand how recent increases in the strength...