Current evidence suggests that genetic factors interact with environmental variables to affect the risk of a person developing OCD.

Interestingly, different people can have different versions of a given gene, which are sometimes called alleles.

Given this, researchers have been searching for the specific genes that create a risk for developing OCD.

Multi-generation family eating in kitchen

Hero Images/Getty Images

OCD is a very complex illness.

It takes a combination of genetic and environmental factors to develop OCD.

2023;13(1):230.

2018;225:326336. doi:10.1016/j.jad.2017.08.039

Mahjani B, Bey K, Boberg J, Burton C.Genetics of obsessive-compulsive disorder.Psychol Med.

2021;51(13):2247-2259. doi:10.1017/S0033291721001744