Putting a price on longevity or well-being is tricky, but not impossible.

Enabling couples who cannot conceive naturally to have babies via artificial fertilisation is altering human evolution, a leading fertility researcher has claimed.

In its decision to approve two drugs for orange and grapefruit trees, the E.P.A. largely ignored objections from the C.D.C. and the F.D.A., which fear that expanding their use in cash crops could fuel antibiotic resistance in humans.

A video about female runners losing their pay and health insurance if they are pregnant sends ripples through the running world.

The rise of the more potent fentanyl in its place has put a generation of older users, who had managed their addiction, at far greater risk of overdose.

A common dietary supplement may help overcome mutations in the Pten gene. Should patients take it?

Phages have not been approved by the Food and Drug Administration, but there is growing interest in the treatment for cystic fibrosis.

Rates are increasing faster among girls

The birthrate hit a 32-year low and the fertility rate reached a record low in 2018, bringing the United States more in line with other wealthy countries.

For the 16 years that Dr. Brian Westerberg, a Canadian surgeon, worked volunteer missions at the Mulago National Referral Hospital in Kampala, Uganda, scarcity was the norm. The patients usually exceeded the 1,500 allotted beds. Running water was...