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A groundbreaking international study has uncovered striking genetic differences in how women and men experience depression, and it could help explain why women are diagnosed with the condition at nearly double the rate of men.
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The research, published in Nature Communications and led by scientists at QIMR Berghofer Medical Research Institute in Australia, found that genetic factors play a larger role in depression risk for women. Researchers discovered nearly twice as many genetic “flags” linked to depression in women compared with men.
The study found about 13,000 DNA changes tied to depression in women. (iStock)
“We already know that females are twice as likely to suffer from depression in their lifetime than males,” said Dr. Brittany Mitchell, senior researcher at QIMR Berghofer’s Genetic Epidemiology Lab.
“And we also know that depression looks very different from one person to another. Until now, there hasn’t been much consistent research to explain why depression affects females and males differently, including the possible role of genetics.”
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The team analyzed genetic data from hundreds of thousands of people, including about 130,000 women and 65,000 men diagnosed with depression. They identified roughly 7,000 DNA changes linked to depression across both sexes, and another 6,000 genetic variations unique to women, for a total of about 13,000 changes.
Scientists found nearly twice as many depression-linked genes in women compared to men. (iStock)
“For me, finding that there are potentially more genetic flags for depression in females than males … was surprising,” Mitchell told Fox News Digital.
“I was expecting that the same genetic flags would influence depression in both sexes.… So finding that this was not really the case, and that females had almost twice as many genetic flags than males was an interesting finding.”
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The study also showed that depression-related genes in women overlap more strongly with those tied to metabolic traits, which may help explain why women with depression often experience symptoms like weight changes or altered energy levels.
The changes in DNA the scientists have identified are genetic differences people are born with, not changes that happen because of life experiences.
The findings could pave the way for more personalized treatments for depression. (iStock)
Traditionally, most drug trials and therapies are tested on males, but those involved in the study hope their work will translate to a greater clinical understanding of female depression.
Mitchell said the key takeaway is that differences in genetics, and therefore biology, contribute to the differences seen in depression between sexes.
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“Our research has shown the importance and value of considering sex in health research,” she added. “We hope that this sets an example for other research to follow.”
While the study focused on participants of European ancestry, the team hopes to expand their work to more diverse populations.
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“It will be really important for future research to also include a wider variety of other populations to determine whether our findings are also applicable to other populations,” Mitchell said.
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“Knowledge is power.… Share this information with your friends and family.… Recognizing those differences is the first step toward more equitable care.”
Khloe Quill is a lifestyle production assistant with Fox News Digital. She and the lifestyle team cover a range of story topics including food and drink, travel, and health.
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