More than 100 neurologists have published a landmark study that suggests one of the most popular textbooks for preschoolers is actually bad for your health.

The study, published in the journal Neurology, looked at brain scans from 7,000 children and found that reading the book was associated with increased risk of developing ADHD and other learning disorders in both children and adults.

The researchers say the findings “provide important data that has important implications for how educators and parents approach preschool education.”

“This study provides evidence that a popular school textbook may have negative effects on the development of the brain and cognition of children and adolescents,” they wrote.

The new study was published in Neurology.

The authors did not say which version of the American Science of Education textbook is more harmful.

“This book is one of those textbooks that I’ve been reading for a while now,” said Dr. Robert Lasky, an associate professor of neurology at Yale University who was not involved in the study.

“I just think that it’s a bad textbook.

It’s bad for kids, and I think it’s bad that it was written.”

The authors of the study, led by Dr. Richard Kriegman, a professor of psychiatry at the University of Michigan Health System, said they had not analyzed the impact of the book on children or their brains in any other way than looking at their brains.

The report did not look at any other specific health risks associated with reading the textbook.

The authors also did not examine whether the book helped kids learn.

Dr. Krieger said that although he believes the results of the current study are compelling, he was not surprised to find that it wasn’t.

“I think that we can draw some inferences from this study that we haven’t been able to draw in other studies,” he said.

The paper also noted that children who read the textbook were more likely to have ADHD and ADHD symptoms, as well as to have more serious and longer-term problems with attention, language, and problem solving.

The American Academy of Pediatrics has called on school districts to review the books.

A number of states are also considering banning or restricting the use of the textbook and the American Psychological Association has issued a statement saying the study’s findings are “very troubling.”

The Associated Press contributed to this report.