Working Long Hours Could Change Structure of Brain: Study
Are you guilty of putting in long hours at the office, sacrificing your personal time and well-being for the sake of your career? If so, you’re not alone. Many of us are accustomed to working long hours, often exceeding 40 hours a week. However, a recent study suggests that this habit could have a significant impact on our brain structure and mental health.
A study published in the journal Occupational and Environmental Medicine found that working long hours (52 hours or more per week) can change the structure of a person’s brain. The study, conducted by South Korean researchers, reveals that being “overworked” could affect parts of the brain linked to problem-solving and memory, and may also negatively impact mental health.
The study analyzed the brain scans of 1,000 workers, with an average age of 44, who were employed in various industries. The researchers used magnetic resonance imaging (MRI) to examine the structure of the participants’ brains, specifically focusing on the hippocampus, amygdala, and prefrontal cortex. These areas are responsible for tasks such as memory consolidation, emotional processing, and decision-making.
The findings showed that workers who put in long hours had a significantly smaller hippocampus compared to those who worked standard hours (35-40 hours a week). The hippocampus is a critical region for learning and memory, and a smaller hippocampus can lead to difficulties in forming new memories and recalling past events.
Moreover, the study discovered that long-working hours were associated with a larger amygdala, which is responsible for processing emotions. A larger amygdala can lead to increased stress levels, anxiety, and depression. Additionally, the research found that long-working hours were linked to a thicker prefrontal cortex, which is involved in decision-making and problem-solving. However, this thickening may not be a positive adaptation, as it could also indicate increased stress and cognitive load.
The study’s lead author, Dr. Sung-Il Cho from the Seoul National University College of Medicine, explained that “long working hours may lead to chronic stress, which can alter the brain’s structure and function.” He added that “this can have long-term consequences for mental and physical health, making it essential to implement policies that promote work-life balance and reduce the risk of overwork.”
The implications of this study are far-reaching, highlighting the need for employers and governments to prioritize employee well-being and work-life balance. With the increasing demands of modern work life, it’s crucial that we recognize the potential consequences of overwork on our brain health.
So, what can you do to mitigate the effects of long working hours on your brain?
- Set boundaries: Establish a clear distinction between your work and personal life. Set realistic goals and prioritize your tasks to avoid burnout.
- Take breaks: Make time for regular breaks and engage in activities that bring you joy and relaxation.
- Practice self-care: Prioritize your physical and mental health by getting enough sleep, exercising regularly, and eating a balanced diet.
- Communicate with your employer: If you’re feeling overwhelmed, don’t hesitate to speak with your employer about your workload and work-life balance.
In conclusion, the study’s findings serve as a wake-up call for all of us who are accustomed to working long hours. It’s essential to recognize the impact of overwork on our brain health and take proactive steps to maintain a healthy work-life balance. By doing so, we can reduce the risk of chronic stress, anxiety, and depression, and cultivate a more resilient and productive workforce.
Source:
https://oem.bmj.com/content/early/2025/05/08/oemed-2025-110057
