People who cheat at least once may tend to cheat again due to similar chemical changes inside their bodies, revealed a team of researchers.
Researchers have tried to decipher the reason behind cheating and they claim that some chemical in our brain may be responsible for it. Dopamine is a neurotransmitter in the brain that controls pleasure and vasopressin is a hormone similar to that of oxytocin that is released during sexual intercourse.
A study conducted in 2002 analyzed the dopamine D4 receptor gene in 200 volunteers. In the study it was found that 50% of participants who had the long allele variant of the gene cheated atleast once on their partner. Only 22% of participants who had the shorter variant cheated on their partner.