Children who eat fish once a week or more sleep better and score higher, on average, on IQ tests than children who never eat fish or do so less than once a week, according to study published last month in-the journal Scientific Reports.
For the new study, more than 500 Chinese children between the ages of 9 and 11 answered how often they'd had fish in the previous month, with options ranging from "never" to "at least once per week." At age 12, the children completed an IQ test that scored their verbal and nonverbal skills.
Children who said they ate fish weekly scored 4.8 points higher on the IQ tests than those who said they "seldom" or "never" ate fish. Because the children were young, the University of Pennsylvania researchers did not ask which fish they ate. "Sometimes" eaters of fish scored 3.3 points higher on IQ exams.
Parents also answered questions about sleep quality. The children who ate more fish had fewer disturbances while sleeping, indicating better overall sleep quality.
The researchers recommend incrementally adding fish to a child's diet.-"Children should be introduced to it early on," said Jennifer Pinto-Martin, a co-author of the study and executive director of Penn's-Center for Public Health Initiatives. As long as the fish has no bones and has been finely chopped, children can begin eating it by around age 2.
"Introducing the taste early makes it more palatable," Pinto-Martin said. "If they're not used to it, they may shy away from it."
Eating fish once or more a week improved sleep in children younger than 12
Frequent fish-eaters scored higher on IQ tests than those who seldom or never ate fish
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