Diet high in fat, sugar and processed foods lowers the IQ of children, formula one study. The report said eating habits at the age of three years form the performance of the brain when it becomes old. Diet is a lot of food has been processed at the age of three years directly associated with a lower IQ at age eight and a half years, according to a Bristol-based study of thousands of children British children. The Avon longitudinal Study of Parents and Children has made observations on health and long-term well-being of about 14,000 children. food especially rich in vitamins and nutrients have helped improve the performance of the brain when the child grows, the real report of the Journal of Epidemiology and Community Health . The researchers said the diet of small children may alter levels of IQ in later childhood, even eating habits improved with age. "This suggests that any impact of cognitive / behavior related to eating habits in early childhood may persist up to the age of children, although there are subsequent changes in food intake, "the real writing. During the study, parents answered questionnaires detailing the types and frequency of meals and drinks provided to children their children when they were three, four, seven and eight and a half years. Each increase of one point in the study of dietary pattern scores (a record of processed fat intake) is associated with a 1.67 point decline in IQ. brain grows most rapidly at the first three years of life. "It is possible that good nutrition during this period may encourage optimal brain growth," added the report.director of research The School Food Trust, Michael Nelson, said: "With about 23 percent of children who start school overweight or obese, it is very clear that healthy choices in their early development is to their benefit, not only to maintain a healthy weight as they grow up, but as the evidence suggests, it is also to enhance their ability to achieve good results at school . "These findings also demonstrate the importance of helping all those involved with early childhood development for information and advice they need on good nutrition." The definition of processed food: food that has been specially treated (eg, drying, freezing, canning) to make it last longer, improve appearance or to make it easier to use.