Frequent consumption of sugary snacks is the principal cause of tooth decay, which can cause a great deal of pain and discomfort."Although this research is still in the early stages there is no doubt that sugar-free yoghurts provide a much healthier alternative to sweets and chocolate, and we would encourage snackers to incorporate them into their diet."One in four people suffer from bad breath regularly, while 19 in 20 are affected by gum disease at some point in their lives.However, Dr Carter stressed that the best way to beat bad breath was by adopting a good oral health routine.This involves brushing twice-a-day with fluoride toothpaste, cutting down on the frequency of sugary snacks and drinks, flossing daily and visiting a dentist regularly.