Study reveals how the brain's opioid system is linked to mood changes associated with depression and anxiety. Neuroimaging revealed, in those with depression, there is a decreased number of opioid receptors in specific areas of the brain. Read More
After 12 days of sugar intake, researchers noted major changes in both the dopamine and opioid systems of pigs' brains. Alterations in the opioid system were seen following the very first intake of sugar. Read More
Short-term opioid use increases positive emotional experiences by intensifying feelings of pleasure and weakening negative emotions. This, researchers say, could be a contributing factor for later opioid addiction. However, the long term use of opioids alters the reward system, diminishing the initial sensitivity and blunting emotions. Read More
Researchers report ketamine's antidepressive effects require activation of opioid receptors in the brain. The study highlights the interaction between depression, pain and opioid addiction. Read More
Researchers uncover how laughter releases endorphins in the brain. Read More
Using a drug used to help treat addiction, researcher report exposing people to their favorite songs no longer elicit feelings of pleasure. Read More
Researchers find the opioid system responds to social rejection, not just physical pain. Read More
A new study provides evidence that the central amygdala, an area of the brain associated with emotion, plays a major role in sustaining cocaine addiction. Read More
