A recent study in mice and rats found that “restoring certain signals in a brain region that processes smells countered depression.” Interestingly, this region of brain that manages the sense of smell is also tied to emotions. The study’s author, Antal Berényi, MD, PhD, explains: “Our experiments revealed a mechanistic link between deficient gamma activity and behavioral decline in mice and rat models of depression, with the signal changes in the olfactory and connected limbic systems similar to those seen in depressed patients. This work demonstrates the power of gamma enhancement as a potential approach for countering depression and anxiety in cases where available medications are not effective.”