According to a new research ,fast food affects not only children's general health but it also slows down their brain. The researchers found that children who eats most fast food score less in test for, maths, science and reading. Lead researcher Kelly Perter from the Ohio State University in the US ,who conducted the research said ,"Our findings provide evidence that eating fast food is linked to another problem:Poorer academic outcomes." Researchers suggested that lack of iron in the fast food leads to a slowing in development of certain processes in the brain. Another idea is that diet high in fat and added sugar have a negative impact on the learning process. The research used data from a national representative sample of 8,500 school children from US ,whose fast food consumption was measured at the