Impulsive people are at greater risks of food and drug addition as impulsivity is a result of cellular activities in the part of the brain involved with reward and not a result of dysfunctional eating behaviour a study indicated. The impulsive models showed increased expression of a transcription factor called Delta-FosB in the nucleus accumbens an area of the brain involved in reward evaluation and impulsive behaviour thus indicating a potential biological component to this behaviour. 'Our results add further evidence to the idea that there are similar mechanisms involved in both drug and food addiction behaviour' said Clara Velazquez-Sancheza