Articles by

Tina Hesman Saey

Biological sex is not as simple as male or female

Sex is messy. It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many...

Toxic dangers lurk in LA, even in homes that didn’t burn

Even as firefighters douse the deadly LA wildfires, a more insidious danger remains. Chemicals from the ashy...

The spread of breast cancer may be inherited

A gene involved in setting cholesterol levels may also determine whether breast cancer spreads to other parts...

Stage 0 breast cancer patients may not need to rush to surgery

Watch and wait may be an alternative to surgery for some women with a very early form...

Cancer screening and quitting smoking have saved nearly 6 million lives

Nearly 6 million deaths from five common cancers were avoided through prevention, early detection and better...