Abstract
In 2015, the World Health Organisation (WHO) published recommendations on sugar intake that refer to the proportion of sugar in total daily energy intake. For a significant caries reduction, a sugar intake of less than 5% of the total daily calorie intake was set as a limit for all age groups. However, this limit value was formulated as "conditional" due to an insufficient study basis. A systematic literature review is now available in which clinical studies could be identified to verify this limit. These studies support and reinforce the previous WHO recommendations for a reduction in sugar intake with the aim of reducing caries. Thus, the recommendation can now be made without reservation. If the energy intake from sugar is limited to less than 5% of the total energy intake, significantly less caries occurs. Based on this knowledge, dental dietary recommendations should be communicated more emphasised. Even with a limit of 10 %, the caries burden is still significantly lower than in people who exceed this limit. To fall below the 5% limit, a maximum daily sugar intake of about 17.5 g is calculated for young children.
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