Children's response to intense sweet taste is related to both a family history of alcoholism and the child's own self-reports of depression, new research from the Monell Center has indicated.
The findings illustrate how liking for sweets differs among children based on underlying familial and biological factors.
"We know that sweet taste is rewarding to all kids and makes them feel good," said study lead author Julie A. Mennella, PhD, a developmental psychobiologist at Monell. "In addition, certain groups of children may be especially attracted to intense sweetness due to their underlying biology."
Because sweet taste and alcohol activate many of the same reward circuits in the brain, the researchers examined the sweet preferences of children with a genetic predisposition to alcoholism. They also studied the influence of depression, hypothesizing that children with depressive symptoms might have a greater affinity for sweets because sweets make them feel better.
In the study, published online in the journal
Addiction, 300 children between 5 and 12 years of age tasted five levels of sucrose (table sugar) in water to determine their most preferred level of sweetness. The children also were asked questions to assess the presence of depressive symptoms, while their mothers reported information on family alcohol use.
Nearly half (49 percent) of the children had a family history of alcoholism, based on having a parent, sibling, grandparent, aunt or uncle who had received a diagnosis of alcohol dependence. Approximately one-quarter were classified as exhibiting depressive symptoms.