my doctor says this has something to do with the phrenic nerve. I was looking it up when I came across this blog. By the way, I DO NOT overindulge in alcohol and think the person who turned the question into a diatribe about alcohol poisening is way over the line. The hiccups happen to me with 1 (ONE) SIP of wine!!!! It also happens to me with carbonated drinks (pepsi, coke, etc). Thanks