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Stanford Researchers Find COVID-19 Pandemic Stress Physically Aged Teens’ Brains

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December 4, 2022
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Stanford Researchers Find COVID-19 Pandemic Stress Physically Aged Teens’ Brains
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3D Brain Scan Side View

The brains of adolescents who had been assessed after the pandemic shutdowns ended appeared a number of years older than these of teenagers who had been assessed earlier than the pandemic.

The brains of adolescents who had been assessed after the COVID pandemic shutdowns ended appeared a number of years older than these of teenagers who had been assessed earlier than the pandemic. Till now, such accelerated modifications in “mind age” have solely been seen in youngsters experiencing power adversity, equivalent to neglect and household dysfunction.

Pandemic-related stressors have bodily altered adolescents’ brains, making their mind buildings seem a number of years older than the brains of comparable friends earlier than the pandemic. That is in keeping with a brand new research from Stanford College that was revealed on December 1, 2022, within the journal Organic Psychiatry: World Open Science.

In 2020 alone, studies of hysteria and despair in adults rose by greater than 25 % in comparison with earlier years. The brand new findings point out that the neurological and psychological well being results of the COVID-19 pandemic on adolescents may have been even worse.

“We already know from global research that the pandemic has adversely affected mental health in youth, but we didn’t know what, if anything, it was doing physically to their brains,” said Ian Gotlib, the Marjorie Mhoon Fair Professor of Psychology in the School of Humanities & Sciences, who is the first author on the paper.

Gotlib notes that as we age, changes in brain structure occur naturally. During puberty and early teenage years, kids’ bodies experience increased growth in both the hippocampus and the amygdala, areas of the brain that respectively control access to certain memories and help to modulate emotions. At the same time, tissues in the cortex, an area involved in executive functioning, become thinner.

Brain Glitch Stress Disorder Concept

COVID-19 pandemic-related stressors have physically altered adolescents’ brains, making their brain structures appear several years older, according to new research from Stanford University.

By comparing MRI brain scans from a cohort of 163 children taken before and during the pandemic, Gotlib’s study showed that this developmental process sped up in adolescents as they experienced the COVID-19 lockdowns. Until now, he says, these sorts of accelerated changes in “brain age” have appeared only in children who have experienced chronic adversity, whether from violence, neglect, family dysfunction, or a combination of multiple factors.

Although those experiences are linked to poor mental health outcomes later in life, it’s unclear whether the changes in brain structure that the Stanford team observed are linked to changes in mental health, Gotlib noted.

“It’s also not clear if the changes are permanent,” said Gotlib, who is also the director of the Stanford Neurodevelopment, Affect, and Psychopathology (SNAP) Laboratory at Stanford University. “Will their chronological age eventually catch up to their ‘brain age’? If their brain remains permanently older than their chronological age, it’s unclear what the outcomes will be in the future. For a 70- or 80-year-old, you’d expect some cognitive and memory problems based on changes in the brain, but what does it mean for a 16-year-old if their brains are aging prematurely?”

Originally, Gotlib explained, his study was not designed to look at the impact of COVID-19 on brain structure. Before the pandemic, his lab had recruited a cohort of children and adolescents from around the San Francisco Bay Area to participate in a long-term study on depression during puberty – but when the pandemic hit, he could not conduct regularly-scheduled MRI scans on those youth.

“Then, nine months later, we had a hard restart,” Gotlib said.

Once Gotlib could continue brain scans from his cohort, the study was a year behind schedule. Under normal circumstances, it would be possible to statistically correct for the delay while analyzing the study’s data – but the pandemic was far from a normal event. “That technique only works if you assume the brains of 16-year-olds today are the same as the brains of 16-year-olds before the pandemic with respect to cortical thickness and hippocampal and amygdala volume,” Gotlib said. “After looking at our data, we realized that they’re not. Compared to adolescents assessed before the pandemic, adolescents assessed after the pandemic shutdowns not only had more severe internalizing mental health problems, but also had reduced cortical thickness, larger hippocampal and amygdala volume, and more advanced brain age.”

These findings could have major implications for other longitudinal studies that have spanned the COVID pandemic. If kids who experienced the pandemic show accelerated development in their brains, scientists will have to account for that abnormal rate of growth in any future research involving this generation.

“The pandemic is a global phenomenon – there’s no one who hasn’t experienced it,” said Gotlib. “There’s no real control group.”

These findings might also have serious consequences for an entire generation of adolescents later in life, added co-author Jonas Miller. During the study, he was a postdoctoral fellow in Gotlib’s lab, and he is now an assistant professor of psychological sciences at the University of Connecticut.

“Adolescence is already a period of rapid reorganization in the brain, and it’s already linked to increased rates of mental health problems, depression, and risk-taking behavior,” Miller said. “Now you have this global event that’s happening, where everyone is experiencing some kind of adversity in the form of disruption to their daily routines – so it might be the case that the brains of kids who are 16 or 17 today are not comparable to those of their counterparts just a few years ago.”

In the future, Gotlib plans to continue following the same cohort of kids through later adolescence and young adulthood, tracking whether the COVID pandemic has changed the trajectory of their brain development over the long term. He also plans to track the mental health of these teens and will compare the brain structure of those who were infected with the virus with those who weren’t, with the goal of identifying any subtle differences that may have occurred.

Reference: “Effects of the COVID-19 Pandemic on Mental Health and Brain Maturation in Adolescents: Implications for Analyzing Longitudinal Data” by Ian H. Gotlib, Jonas G. Miller, Lauren R. Borchers, Sache M. Coury, Lauren A. Costello, Jordan M. Garcia and Tiffany C. Ho, 1 December 2022, Biological Psychiatry: Global Open Science.
DOI: 10.1016/j.bpsgos.2022.11.002

The study was supported by funding from the National Institutes of Health (R37MH101495 to Ian Gotlib).

Gotlib is also a member of Bio-X, the Maternal & Child Health Research Institute, the Precision Health and Integrated Diagnostics Center, and the Wu Tsai Neurosciences Institute. He is also a faculty affiliate of the Stanford Center on Longevity.





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Tags: AgedBrainsCovid19FindPandemicPhysicallyResearchersStanfordStressTeens
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