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Long-term, successful marriage depends on individuals' genes

March 13, 2019 - 3:30 am
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KYW Newsradio’s Medical Reports are sponsored by Independence Blue Cross. 

By Dr. Brian McDonough, Medical Editor

PHILADELPHIA (KYW Newsradio) — What is most important as far as contributing to long-term success in a relationship? 
Some would suggest that luck plays the biggest role. 

Of course, scientists don't necessarily believe in luck — they like an explanation for everything. 

According to a new study from the Yale School of Public Health, long-term happiness for a married couple could depend on a person's individual genes or those of their spouse. 

The researchers looked at almost 200 married couples ranging in age from 37 to 90 years old. The scientists studied the participants' saliva — those with the most successful marriages had at least one partner with something known as the GG genotype within the oxytocin gene receptor. 

Oxytocin is a hormone that plays a role in social bonding. 

Don't get caught up with the specific genes — it is just fascinating at the overall concept.