A recent study has examined the link between light exposure and mental health. The findings suggest that individuals exposed to high levels of light at night have a 30% higher risk of developing depression and other psychiatric conditions like psychosis, bipolar disorder, anxiety, PTSD, and self-harm. On the other hand, those exposed to more light during the day have a 20% lower risk of depression and are less likely to develop other mental health issues.
The impact of light on mental health may be due to its effect on the body’s circadian rhythm. When our internal clock is misaligned, it can have negative consequences on our mental well-being. Clinical Psychologist John Burns suggests some simple tips that can help improve light exposure and support our mental health. These include taking a walk outside in the morning, setting up your workspace near a window for natural light, and reducing screen time before bed.
A 2022 analysis found that in 33% of the studies reviewed, people experienced reduced sleep after exposure to blue light. To help realign circadian rhythms and improve mental health, individuals can try using a bright light box at home during fall and winter when sunlight is limited. By understanding the impact of light on our mental health and making small adjustments to our daily routines, we can better support our well-being.
