Can heat exposure increase endorphins?

Yes, heat exposure can indeed increase endorphins. Rhonda Patrick explains that heat stress leads to the release of endorphins, also known as beta-endorphins, which are part of the body's natural opioid painkiller system. This is similar to what happens during vigorous exercise as both activities increase core body temperature, contributing to the endorphin response 1.

Moreover, exposure to heat, such as in a sauna or a hot bath, significantly boosts endorphin levels. This effect is not just immediate but can also potentially have lasting benefits, including improved mood and stress resilience. Rhonda Patrick personally experienced enhanced mood and reduced stress from regular sauna use during her graduate school years, attributing these effects to the release of endorphins and other mechanisms 2 3.

Additionally, it’s noted that heat exposure causes the release of dinorphine, a counterpart that makes mu opioid receptors more sensitive to endorphins, enhancing their positive effects 4.