I think smoking is more prevalent in the rest of Europe than the UK, although many people smoke. The diet in the Uk is probably some of the worst in Europe. In the north (but also nationwide) people live on stuff like meat pies, chips (French Fries), Crisps (Potato Chips), Beer and coffee. No exaggeration, I know guys who live on Burger King, Kebabs, Fish and Chips and Carling lager.
Whilst there are some right munters as far as women go, there are some totally foxy ladies all over the place. It think its the same in msot countries.
I don't really think the US has any more good looking people than the UK per population. In the states there are certainly more obese people, and you have a damn good share of ugly people.
If people look a little haggard over here (UK) its probably just tiredness from when we ran the world and had a lot of stress being one hard bastard nation ruling lots of countries.