Many children are rewarded for eating healthy food with a dessert. This causes more problems than parents realize. It isn't necessarily the dessert itself that causes obesity. Obesity is only found in extreme cases. This is where a child consumes all necessary vitamins and minerals and still eats products loaded with sugars.
Sugars have relatively no nutritional value.
These extra calories are stored in body fats for future use. So sugar can cause obesity. Another major catastrophe caused by the excessive intake of sugar is tooth decay. This is why one's dentist always recommends to cut back on the sweets. Sugar can cause tooth decay faster than any other food source.