We had a similar thing happen to us when both Steve and I were getting our hair cut some time ago. He got his cut and then decided to go for a walk while he waited for me. No sooner was he out of the shop than my hairdresser couldn't help but ask why he was so thin and had he been ill. He hovers around 56kg at a height of 5'11 so not much different to Alex I imagine. How on earth can you ask a complete stranger these things. She quickly learnt to mind her own business when I told her he was recovering from oral cancer and had actually put on 5kg. She didn't quite no what to say and I've got to say my haircut sped up a great deal. You really have to worry as to where people's manners are these days.