Surely you have heard that opposites literally attract to each other. Especially when it applies to those characters who hate each other can not — the writers, for example, love to create films based on this assumption. However, the reality paints a very different picture — according to a study published in the journal JAMA Psychiatry, genetic similarity, can determine who will be your partner, especially if your partner and you have a common mental disorder.
Genetic similarity and mental illness
The study involved 707 263 citizens of Sweden. All subjects attended at least one mental illness: ADHD, schizophrenia, bipolar disorder, anxiety disorder, depression, obsessive-compulsive disorder, autism spectrum disorders, and others. The study also considered those with physical ailments — diabetes, Crohn’s disease, rheumatoid arthritis and so on. As a control group for one person suffering from physical or mental illness, were five healthy subjects.
The scientists then tracked the romantic relationship between the subjects for 18 months. It turned out that people with mental disorders most often chose as a partner of a person with a mental disorder. Slightly more partners shared a similar disease. Meanwhile, the obtained results do not mean that if partners have the same mental disorder, they are compatible. According to the publication Wired, in the past, few studies have investigated the correlation of the partners at the level of diagnoses. Moreover, the methods of the studies were based on small samples of volunteers and their stories about themselves.
Since many Swedish couples live together rather than marry, the study focused on people who were either married or had children. As they say in their paper, the researchers, the birth of the child was almost the only viable way to determine whether or not couples are”compatible”. Given that the study focused on people who have genetically related mental disorders, mental health future of these children is a really interesting topic for future research.