Dr Bernadette Carr answers your questions on food poisoning and sciatica

I am going on holidays in three weeks and am wondering what I can do to prevent food poisoning. Last year I had a three-day bout of vomiting and diarrhoea which almost ruined my entire holiday.
Food poisoning and gastroenteritis can be very distressing and unpleasant. In many cases it may be self-limiting, however, some serious cases may result in hospitalisation due to dehydration.