I am the mother of two young children, and extremely grateful to my own parents for looking after them for a few hours now and then. My problem is that they stuff the kids with chocolates, crisps and ice cream. This is not good for the children, their behaviour and my own efforts to feed them something nutritious. Why do the grandparents have such a different philosophy, and can I do anything to change their thinking?
F.M., Cumbria

Dear F.M.,