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Physical Activity May Help Reduce The Impact Of Genetic Risk On Depression Severity: Study

Can Physical Activity Reduce Genetic Risk Of Depression?

Having a high genetic risk for <a href="https://www.healthandme.com/health/depression">depression</a> does not mean it is unavoidable.

A large new study suggests that staying physically active can meaningfully dampen that genetic risk’s effect on how severe depression symptoms actually become.

Researchers led by Denver Brown, an assistant professor at Kansas State University’s School of Health Sciences, worked with co-investigators at the University of Texas at San Antonio, the University of Rhode Island, and Vanderbilt Health, according to a Kansas State University press release.

The team drew on the National Institutes of Health’s All of Us Research Program, examining 23,517 adults with an average age of around 56, using whole-genome sequencing combined with long-term Fitbit activity data tracked over an average of 582 days, per the study published in Nature Mental Health.

Rather than relying on self-reported exercise habits, which are prone to inaccurate recall, the researchers used objective daily step counts and minutes of moderate-to-vigorous physical activity recorded directly from participants’ wearables.

The study looked at two separate things: whether someone had a formal <a href="https://www.healthandme.com/health-wellness/seasonal-depression-is-more-than-just-sadness-how-winter-can-affect-pleasure-and-motivation-article-156369258" data-type="tilCustomLink">depression</a> diagnosis, and how severe their symptoms were, based on electronic health records.

For diagnosis alone, genetic risk and physical activity each had their own independent effects, higher genetic risk raised the odds of depression, and higher activity lowered them, but the two didn’t interact with each other.

For symptom severity, the picture was different. Here, physical activity directly weakened the link between genetic risk and how bad symptoms became, a pattern the researchers found held up consistently across every way they measured activity and severity, according to the study.

Also Read: <a href="https://www.healthandme.com/health-wellness/why-a-stroke-can-change-the-way-a-person-eats-speaks-and-even-breathes-article-156425701" data-type="tilCustomLink" target="_blank">Why a Stroke Can Change the Way a Person Eats, Speaks and Even Breathes</a>

“Both measures showed a consistent pattern where genetic risk was less strongly linked to depression severity among adults who were more active,” Brown said. 

In coverage by German outlet T-Online, the study was reported to show that every additional 1,000 daily steps was linked to roughly an 11% lower likelihood of ever having had depression, though that specific figure relates to the diagnosis side of the findings rather than the severity-buffering effect.

“Depression is one of the leading causes of disability worldwide, so understanding how we might reduce its burden is important,” Brown said. 

“As we move toward more personalized medicine, understanding a patient’s genetic risk could help inform conversations about lifestyle, including the potential role of physical activity in helping prevent depression or manage its symptoms.”

Brown also pointed to a gap in older depression research: treating it as simply present or absent misses a lot of real-world variation. “Someone may have some symptoms, but not a formal diagnosis. Some might have moderate symptoms, and others experience substantial symptoms,” he said.

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Brown’s broader work focuses on physical activity in adolescents and young adults, a stage of life that coincides with both peak onset of depression and anxiety and a steep decline in <a href="https://www.healthandme.com/fitness/short-bursts-of-squats-may-build-strength-as-effectively-as-longer-gym-sessions-study-finds-article-156436022" data-type="tilCustomLink">physical activity</a>.

The eventual goal is personalised activity prescriptions, specific step or activity targets tailored to someone’s genetic risk profile, rather than one-size-fits-all exercise advice.

This is an observational study, so it shows a strong statistical association, not direct proof that exercise causes the buffering effect. The researchers themselves describe it as a step toward more personalised care, not a finished treatment protocol.

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Having a high genetic risk for depression does not mean it is unavoidable. A large new study suggests that staying physically active can meaningfully dampen that genetic risk’s effect on how severe depression symptoms actually become.What The Study Looked At?Researchers led by Denver Brown, an assistant professor at Kansas State University’s School of Health Sciences, worked with co-investigators at the University of Texas at San Antonio, the University of Rhode Island, and Vanderbilt Health, according to a Kansas State University press release. The team drew on the National Institutes of Health’s All of Us Research Program, examining 23,517 adults with an average age of around 56, using whole-genome sequencing combined with long-term Fitbit activity data tracked over an average of 582 days, per the study published in Nature Mental Health.Rather than relying on self-reported exercise habits, which are prone to inaccurate recall, the researchers used objective daily step counts and minutes of moderate-to-vigorous physical activity recorded directly from participants’ wearables.What The Researchers Found?The study looked at two separate things: whether someone had a formal depression diagnosis, and how severe their symptoms were, based on electronic health records. For diagnosis alone, genetic risk and physical activity each had their own independent effects, higher genetic risk raised the odds of depression, and higher activity lowered them, but the two didn’t interact with each other.For symptom severity, the picture was different. Here, physical activity directly weakened the link between genetic risk and how bad symptoms became, a pattern the researchers found held up consistently across every way they measured activity and severity, according to the study.Also Read: Why a Stroke Can Change the Way a Person Eats, Speaks and Even Breathes“Both measures showed a consistent pattern where genetic risk was less strongly linked to depression severity among adults who were more active,” Brown said. In coverage by German outlet T-Online, the study was reported to show that every additional 1,000 daily steps was linked to roughly an 11% lower likelihood of ever having had depression, though that specific figure relates to the diagnosis side of the findings rather than the severity-buffering effect.Why This Matters For Treatment?“Depression is one of the leading causes of disability worldwide, so understanding how we might reduce its burden is important,” Brown said. “As we move toward more personalized medicine, understanding a patient’s genetic risk could help inform conversations about lifestyle, including the potential role of physical activity in helping prevent depression or manage its symptoms.”Brown also pointed to a gap in older depression research: treating it as simply present or absent misses a lot of real-world variation. “Someone may have some symptoms, but not a formal diagnosis. Some might have moderate symptoms, and others experience substantial symptoms,” he said.   Where This Research Is Headed?Brown’s broader work focuses on physical activity in adolescents and young adults, a stage of life that coincides with both peak onset of depression and anxiety and a steep decline in physical activity. The eventual goal is personalised activity prescriptions, specific step or activity targets tailored to someone’s genetic risk profile, rather than one-size-fits-all exercise advice.This is an observational study, so it shows a strong statistical association, not direct proof that exercise causes the buffering effect. The researchers themselves describe it as a step toward more personalised care, not a finished treatment protocol.