Charlotte, 38

Charlotte: "I stopped smoking a year ago. I'd smoked since I was 16 and I'd started to get yellow teeth, bad skin and wrinkles. I looked ten years older than I was. At first it was really tough - all I wanted to do was eat, and however hard I tried I kept snacking on chocolate and sweet things. I ended up putting on 4 kilos, I was really down and I really wanted to start again. A friend of mine could see I was ready to give in and start again and she suggested going to a specialist. He gave me nicotine substitutes that helped with the cravings and stopped me eating so much. I lost 3 kilos gradually, I've given up completely and I'm really happy to have my old body back."