I would say so - men drop out of our group every week or 2.
How long have you being doing it? If it's a while, it'd be best to have some sort of gradual return to food.
When I first did LL I couldn't afford it (I barely can now) - I ended up selling half my dvd collection for about £700 (at work - would have got far less elsewhere). Maybe you can car boot, or something? Enough to keep you going a little longer while you introduce food.
There are cheaper plans too - I believe Exante is £25 a week if bought in the right quantity but I couldn't say what the packs are like.
Sorry for the OH too - I've been through 3 rounds of redundancy where I work, and while I have escaped each, there will be at least 2 more and depending on who buys us (I work for Northern Rock's IT dept), I'll be out on my ear (pretty much have to hope it's Virgin who buy us). It's horrible to go through.