Health experts and urban planners have long believed that planting more trees in residential areas is good for everyone in those neighborhoods.

A new study shows that’s not necessarily so.

Researchers at Michigan State University found that while trees do reduce stress and extend longevity, the benefits vary based on other factors.

Professor Amber Pearson led the study. She and her team examined the relationship between residential tree canopies and allostatic load. That’s the cumulative wear-and-tear that stress has on the human body. Pearson says they confirmed that trees improve human health.

“What we found was that having higher percentage of residential trees was associated with lower allostatic load scores,” she says. “In other words, it’s good for your health.”

But Pearson found something surprising: It wasn’t good for everyone.

Researchers used federal health data on 40,000 people across the country. They also looked at satellite data from tree canopies in about 10 million U.S. census tracts.

Pearson says health benefits varied based on things like education, income, and employment.

“We found a relationship in those that were more socioeconomically advantaged, but not the more vulnerable or disadvantaged participants,” she says.

The study found that Hispanic and non-Hispanic white participants saw significant improvement, while non-Hispanic Black participants did not.

Pearson says social and economic stress may override nature’s health benefits. 

“Trees alone may not be enough to overcome those stressors in those populations,” she says. “We really need to do more to understand those stressors and that’s an area of future research.”

Pearson says the findings could challenge people’s assumptions about trees.

“Trees are not a panacea,” she says.

The study appears in the Lancet Regional Health – Americas.

This story is a part of WDET’s on-going series, The Detroit Tree Canopy Project. 

When relationships get tough, couples can venture into infidelity. While cheating remains as frequent as it has always been, we wanted to better understand why it happens. 

Todd Shackleford is an evolutionary psychologist from Oakland University. He joined the program to discuss how and why infidelity happens.

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There has been a lot of discussion in the recent years about the direction romance is heading. The marriage rate is lower than it was at the turn of the century, technology has shaped the way dating is measured, and people are embracing new forms of the practice.

Jessica Moorman, an associate professor of communication at Wayne State University, joined the show to discuss the state of today’s dating scene, how complicated it can be, and whether coupling should even be the goal.

Listen to The Metro weekdays from 10 a.m. to noon ET on 101.9 FM and streaming on demand.

Subscribe to The Metro on Apple Podcasts, Spotify, NPR.org or wherever you get your podcasts.

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The U.S. Forest Service is shutting down all four of its research centers in Michigan as part of a nationwide reorganization, sparking concerns about the future health of forests in the Great Lakes.

According to environmental advocates, the closure could increase problems like invasive pests and diseases, as well as harm wildlife, outdoor recreation, and forest biomes. 

Emma Shedd is with the Sierra Club’s Michigan Chapter. She says the importance of these research centers cannot be ignored.

“It is a big deal….there are a lot of impacts that we can expect to see [like layoffs and loss of skilled research staff]…we can [also] expect to see a much weaker agency, and that trickles down to a lack of regional research to support our forests here [in Michigan].” 

Researchers with the U.S. Forest Service study forest health, monitor invasive species, and collect long-term data that help both federal and state agencies make decisions. Shedd says this includes a nationwide program which guides actions about logging, wildlife habitats, water quality, and outdoor activities.

Without these facilities, she says, a lot of that work could be reduced or lost. 

Shedd says, “Forest management is a long term game…we’ve got rotations of 60 to 80 to 100 years going on in our forest, and so having a lack of management now…has effects that span whole lifetimes.” 

She says Michigan residents who oppose the drastic cuts to the U.S. Forest Service should call their representatives. “This is something that we really need to push back on for… the health of our forests in the long term,” Shedd says.

This story is a part of WDET’s ongoing series, the Detroit Tree Canopy Project.