Delta opioid receptors are a type of protein found in the brain and other parts of the body. They belong to the opioid receptor family, which also includes mu opioid receptors and kappa opioid receptors. These receptors play a crucial role in modulating pain, mood, and emotional responses by interacting with natural and synthetic opioids. When activated by specific molecules, delta opioid receptors can help reduce pain and promote feelings of well-being. They are also involved in various physiological processes, including stress response and addiction. Research into delta opioid receptors may lead to new treatments for pain management and mental health disorders.