(CNN)A massive genetic study in nearly 200,000 veterans with anxiety is providing new insights into how and why people may be pre-disposed to anxiety issues.
A massive study of 200,000 veterans identifies genetic links to anxiety
The genome-wide association study was the "largest ever study" looking into genes that could be associated with anxiety, according to Daniel Levey, a postdoctorate associate at the Yale School of Medicine and one of the authors of the study.
The study identified six genetic variants linked to anxiety. Some of the variants associated with anxiety had previously been implicated as risk factors for bipolar disorder, post-traumatic stress disorder and schizophrenia.
Levey and his team used data from veterans provided by the Million Veteran Program, a national initiative by the Department of Veterans Affairs researching how genes and lifestyle affect the health of more than 800,000 veterans who've participated.