The Endocrine System

A new technique reprograms people's fat to become mature pancreatic beta cells, the cells that regulate how sugar from food is turned into fuel for cells.

Can an enzyme flip the switch on fullness?

Parabens, which are chemicals found in personal care products, may not be as safe as once thought.

It's a tough trade-off for male howler monkeys: a deeper voice, or more sperm?

Children's hormone treatments may have spread a protein linked with Alzheimer's disease, according to a small new study.

A woman has given birth to a healthy baby boy who she conceived naturally after her ovarian tissue was extracted from her during her childhood, and frozen.

Chemicals called phthalates may disrupt brain development, researchers say.