A report into alcohol-related brain damage (ARBD) should serve as a “wake-up call”, Alcohol Concern Cymru said.
It highlights the condition, known as ARBD, which it says is poorly understood by the public and the health service leading to under-diagnosis.
Symptoms include confusion, memory loss and difficulty reasoning as a result of heavy drinking.
The charity is using the report to raise awareness to help develop improvements in prevention and help.