What Genetic Differences Shape Depression in Females and Males?

Synopsis
Key Takeaways
- Females show a higher genetic vulnerability to depression.
- About 13,000 genetic changes are linked to depression in females.
- Research emphasizes the importance of sex-specific studies in mental health.
- Insights could lead to personalized treatment options.
- Understanding genetic factors is key to addressing depression effectively.
New Delhi, Oct 8 (NationPress) A group of researchers from Australia has uncovered significant genetic distinctions between how females and males experience depression for the first time, marking a breakthrough that could lead to more focused interventions and treatments.
In a study published in Nature Communications, scientists discovered that genetic elements play a larger role in increasing depression risk in females compared to males.
The research team at QIMR Berghofer Medical Research Institute identified approximately twice as many genetic indicators related to depression in the DNA of females than in males.
Dr. Brittany Mitchell, a Senior Researcher at QIMR Berghofer's Genetic Epidemiology Lab, stated, “We know that females are twice as likely to experience depression in their lifetimes compared to males.”
She further explained, “Depression manifests differently across individuals. Until now, there hasn't been substantial research to clarify why depression impacts females and males differently, particularly from a genetic standpoint.”
The researchers pinpointed around 7,000 genetic variations that could lead to depression in both sexes, along with an additional 6,000 changes (totaling 13,000) that are specific to females alone.
According to researcher Dr. Jodi Thomas, the study also highlighted how depression symptoms may vary between females and males.
They found that the genetic factors associated with depression in females overlap significantly with those linked to metabolic traits.
“We identified genetic variations that may clarify why females with depression frequently encounter metabolic issues, such as weight fluctuations or changes in energy levels,” Dr. Thomas said.
As part of the largest global study of its kind, the scientists analyzed DNA from hundreds of thousands of individuals, including about 130,000 females and 65,000 males diagnosed with depression.
The genetic alterations identified are inherent differences present at birth, not changes resulting from life experiences.
Historically, most drug trials and therapies have predominantly involved males, but Drs. Mitchell and Thomas are optimistic that their findings will lead to a deeper clinical understanding of female depression.
“By unraveling the shared and unique genetic factors in females and males, we gain a clearer insight into what triggers depression, paving the way for more personalized treatments,” Dr. Thomas concluded.
The research underscores the necessity of considering sex-specific genetic influences in the study of depression and other health issues.