I bring it up because I went out drinking last night and didn’t wake up craving a sweet beverage (usually it’s orange juice). Then I realized that last night I did something I never do: I ate a couple of donuts before I went to bed. Is there a connection here? If so, what is the connection between consupmtion of sweets and boozing it up.
I thought drinking usually led to low blood sugar, hence why, in my college days, a big Sunday brunch was always so important for recovery from hangovers.
(Note that the page is directed specifically at diabetics; I don’t have a cite for exactly how pronounced the effect is in non-diabetics.)
This is a semi-informed guess, but if you normally crave OJ after drinking, I bet it’s more for the vitamin C than the sugar. I believe the body needs extra vitamin C to deal with the alcohol.
Of course, if it is a sweet beverage with Vitamin C that you crave, a tasty strawberry dacquiri is alway sin order. 
But what if the human mind didn’t know that orange juice contained vitamin C?
All these ‘theories’ that taking vitamins cures hangovers, or that alcohol depletes certain vitamins, strike me as complete bullshit. I’ve heard no actual evidence for them, but they seem to have become something akin to common knowledge. Vitamin C doesn’t last very long in the body as is; you probably are pretty much out of it by morning anyway, and what’s the evidence that the body (a) requires more vitamin C than usual when drinking. (b) that people have a particular, general craving for foods high in vitamin C the morning after, and © the donuts I always crave when I’m hungover have vitamin C in them?
I think I crave orange juice because I got into the habit of drinking it. It can be a can of coke , but I don’t keep that stuff around the house.