Is ADHD caused by the behavior of the wrong parents?

Is ADHD under the protection of the question caused by the wrong parents? The answer is not currently proof that ADHD syndrome can only develop due to social factors or from the methods of raising children. Most installed factors are in the field of nerve biology and genetics. Among these factors: Environment: Studies indicate the possibility of a connection between the use of cigarettes and alcohol during pregnancy and the risk of ADHD at birth. Another ecosystem to increase the risk of ADHD may be associated with a high level of lead in preschool bodies. Foods and sugar: A hypothesis is offered that attention disorder is caused by refined sugar or food additives, or that the symptoms of the ADHD are exacerbated by additives and sugar. In 1982, the National Institutes of Health in the United States held a conference to reach a scientific consensus and to discuss scientific opinions on this issue. The diet was found to have helped about 5 % of children with ADHD, mostly young children with allergies to different foods. A recent research on the effect of sugar on children, in which sugar was used in some days and other alternative sugar -synitivity on rotation, without the parents, the medical staff, or the examined children, the quality of the materials used, has no significant effect of sugar on their behavior or their ability to learn.