The single most important cause of dental caries is the frequency with which sugar-containing foods and drinks are consumed. The nutritional advice offered in relation to oral health should be based on the reduction of between-meal snacking of sugary foods and drinks.
The 1995 World Health Organization recommend that frequent consumption throughout the day of foods containing sugar should be avoided, especially by children. These guidelines further recommend that while a high energy intake is required for growth by adolescents, and this increases meal frequency, this should not be associated with frequent consumption of foods anddrinks high in sugar throughout the day.
The WHO recommendation is that the intake of “free sugars” – this term does not include sugars naturally present in whole fruits, vegetables and milk – should be less than 10% of total energy intake which equates to 15 or20 kg per year and that frequency of intake be limited to four times or less a day.