Biting of the nails can be related to generalised anxiety and nervous conditions, or even OCD (obsessive compulsive disorder), says Megan Sheppard.

My grandfather had a heart attack last year. He has switched to low-fat dairy and cut out red meats. What other dietary changes does he need to make to stay healthy?

* Two children in my daughter’s crèche have been diagnosed with scarlet fever in the last week.