The World Health Organization (WHO) recommends that both adults and children reduce their daily intake of free sugars to less than 10% of their total energy intake. For additional health benefits, a further reduction to below 5% is suggested. These recommendations are based on evidence linking high sugar consumption to increased risks of overweight, obesity, and dental caries.

References:

• World Health Organization. "WHO calls on countries to reduce sugars intake among adults and children." March 4, 2015. Link