Nice write up. Though, there was no mention to sugar - I've always thought (or been told) to avoid sugary drinks, meaning added sugars like cola, to prevent a hangover.
A quick Google search produced this:
"The body is efficient at dealing with glucose, unless you have a medical condition like diabetes, so sugar itself does not play a role in hangovers. However, sugary alcoholic drinks don't provide hydration so you may end up more dehydrated, which can worsen hangover symptoms."