Another suspected nutritional influence on behavior is a diet high in sugar and carbohydrates. Diets high in sugar and carbohydrate have been linked to violence, high aggression, and associated with attention span deficiencies. Research shows that among adolescent males, iron deficiency is directly associated with aggressive behavior. Furthermore, one study found that iron deficiency was nearly twice as prevalent in a group of incarcerated adolescents as among their non- incarcerated peers ( ). Research has also linked hypoglycemia to outbursts of antisocial behavior and violence (Siegel 140). These biocriminologists, who believe that food and crime are associated, think that if diet can be improved then the frequency or violent behavior would be …show more content…
For example, on a macro-level, when criminologists Paul Stretesky and Michael Lynch examined air led concentrations across countries in the United States, they found that areas with the highest concentrations of lead also reported the highest levels of homicide (Siegel 141).
While some research focus on the biochemical conditions of crime, others may focus on neurophysiologic conditions and crime. Neurophysiology is the study of brain activity, and some believe that neurological and physical abnormalities are acquired as early as the fetal or prenatal stage or through delivery trauma and that they control behavior throughout the life span (Siegel 142). In studying the brain and the areas involved with violent criminals, impairment were found in the; prefrontal lobes, thalamus, hypothalamus, medial temporal lobe, superior parietal and left angular gyrus areas of the