Scientists discover brain cells that may drive alcohol cravings in mice

A new study has uncovered a unique group of brain cells linked to alcohol consumption in mice. These neurons, found in the central amygdala, become highly active when animals drink alcohol. The discovery could offer fresh insights into treating alcohol dependence, a chronic condition affecting millions.

Researchers led by Christina L. Lebonville examined the brains of genetically modified mice. Using fibre photometry, they tracked the activity of dynorphin-expressing neurons—dubbed CeADyn neurons—while the animals consumed different liquids. The results showed a marked spike in activity when the mice drank alcohol, but not when they consumed water or sucrose.

The study, published in Nature Neuroscience in 2023, identified Frederique Yow as a key contributor. The team found that CeADyn neurons responded uniquely to alcohol, suggesting a specialised role in driving consumption. This heightened activity points to a potential neural circuit involved in excessive drinking.

Alcohol dependence remains a major health issue, with around 30 million people affected in the U.S. alone. Despite existing treatments, relapse rates stay high, highlighting the need for new approaches.

The findings open doors for future research into human alcohol dependence. By targeting CeADyn neurons, scientists may develop therapies that reduce cravings or prevent relapse. However, further studies are required to confirm whether these results apply to people.