hormones

Two microorganisms seem to be responsible for that pregnancy glow.

Dopamine is not just a happy hormone -- it is also heavily involved in learning and memory. Recent studies are showing that dopamine plays a key role in auditory learning in songbirds.

by Melanie Basnak figures by Aparna Nathan Emily gave birth to a healthy baby boy. But, soon after the delivery, she started to feel sad and constantly overwhelmed. She could easily get irritated and was often angry. She worried that something would…