Hey, I've done paleo about 9 months (in London). Unless you have medical reasons not to (like kidney disease) anyone starting out would benefit from eating decent amounts of fat (so you're not starving), some added salt and magnesium supplements. Arguably potassium too, but eat your greens and avocado and you'll get it. As you lower your fasting insulin through lower carb intake and use up glycogen stores more you lose fluid (hence the rapid weight loss) and electrolytes with it. If you take care of the things above it's so much easier, as a lot of the crappy feeling at the start is down to that shift. After a few weeks you're back in equilibrium and ready to kick arse! (magnesium citrate is a cheap and effective type on amazon, magnesium oxide like in holland and barrett isn't absorbed well).
Very dark chocolate like Lindt 90% was good for carb cravings for me.
The trouble with the rat race is that even if you win, you're still a rat.
I take life easier than almost anyone I know, but when I exercise I do it as though my life depends on it (which it does).
(Arthur De Vany)