1. Health
Send to a Friend via Email
You can opt-out at any time. Please refer to our privacy policy for contact information.



Updated November 25, 2007

Definition: Naturally occurring substances released by the brain that resemble opiates, and are theorized to be the brain chemicals that make you feel happy and content.
Pronunciation: en-DOR-fins
Common Misspellings: endorfins, indorphins, indorfins, endorfans, indorfans
She found that running released endorphins and made her feel better all day.

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.