For many people, grit – the perseverance and passion for long-term goals – is a virtue. It is also a key ingredient in overcoming challenges, achieving success and maintaining resilience.

Studies have linked grit with success in goal attainment , improved psychological well-being and increased life satisfaction .

But despite conventional narratives equating this type of psychological persistence with well-being, brain research is beginning to show that mustering grit in the face of adversity may also have some unexpected detrimental effects – particularly for communities that are already under chronic stress.

As a behavioral scientist studying Alzheimer’s disease and brain health in Black communities , I use techniques such as brain activity monitoring to examine risk factors and early signs of cognitive decline. My research along with other work is beginning to uncover that pushing through can create a level of stress that actually taxes brain health .

The paradox of grit, active coping and brain health

Grit has become a central idea in psychology. Researchers have mainly focused on its positive features, describing it as a quality that helps people work hard, stay strong during tough times and keep trying even when things are difficult. Active coping is a similar concept defined as addressing problems directly and actively seeking solutions. Studies have linked it to lower stress , better health and feeling more in control .

Traits such as grit and active coping are strategies used to manage stress, and they are traditionally seen as protective factors for well-being.

But perseverance may also come with risks that can contribute to poor brain health outcomes. Consider the concept of John Henryism , developed by an epidemiologist named Sherman James in the 1970s.

John Henryism is a coping strategy characterized by persistent, high-effort striving in response to chronic stressors, particularly among marginalized groups. It is named after the legendary African American folk hero John Henry , who worked himself to death in a contest against a steam-powered drill. In the folk tale, John Henry exemplifies how people may engage in prolonged, high-effort coping, often at the expense of their health. James used the folklore to symbolize the relentless effort to overcome structural and systemic barriers.

For example, imagine someone in their early 40s who works two physically demanding jobs to support their family and prevent homelessness. They believe relentless effort is the only path to stability, despite experiencing chronic fatigue and pain. Over time, this sustained strain may lead to high blood pressure, stroke and depression – all of which have been linked to cognitive decline.

A statue of a man holding a hammer, depicting African American folk hero John Henry