Loses the head on drink and goes into Alcoholics Anonymous - will the cardiologist be able to handle it? (5)
I believe the answer is:
aorta
If this is the answer, I'm afraid I cannot explain it.
Can you help me to learn more?
(Other definitions for aorta that I've seen before include "Major artery at left of heart" , "Bloody channel" , "Main artery of body" , "Large artery of the heart" , "claret supplier" .)