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uclahealth.org
news
https://www.uclahealth.org/news/article/being-in-natural-light-improves-mood-…
Dear Doctors: My company called the employees back to the office, and I’m dreading it. There aren’t many windows, and it’s all fluorescent lights. Being able to be outdoors while working from home has been great. I know I’m less depressed when I get to be in daylight. Is there any science behind that?
Dear Reader: Yes. Decades of studies have shown that natural light has a powerful, and often positive, effect not only on mental health, but also on physical health and general well-being. [...] Now, a large new study continues to connect time spent outdoors to improved mental health and sleep. Conducted in Great Britain and published last December in the Journal of Affective Disorders, the research analyzes data gathered from 500,000 women and men between 37 and 73 years old. The individuals included in the study reported that they spend about 2.5 hours outdoors each day. Using medical information and outcomes about the group, researchers found that each additional hour spent outside [...] hour spent outside in natural light was linked to a corresponding decrease in the risk of developing long-term depression. They also saw reduced use of antidepressants, as well as self-reported improvements to mood and general feelings of happiness. An interesting aspect of these findings is that while they were tied to increases in the time spent outdoors in daylight, the results proved to be independent of other variables such as lifestyle and social or economic status.
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thrivecounselingaz.com
article
https://thrivecounselingaz.com/blog/harnessing-the-power-of-light-the-impact-…
In the hustle and bustle of modern life, where stress and mental health issues are on the rise, finding simple yet effective ways to enhance our well-being has become a priority. One often overlooked yet powerful tool at our disposal is exposure to natural light, particularly during the early morning and sunset hours. In this blog post, we will explore why harnessing the benefits of these specific times of day can have a profound impact on mental health, drawing insights from renowned [...] In the pursuit of good mental health, we often underestimate the impact of our daily routines on our well-being. By aligning ourselves with the natural rhythms of the day through early morning and sunset light exposure, we can positively influence our circadian rhythm, sleep quality, and overall mental health. As Huberman and Walker suggest, these simple adjustments can lead to profound improvements in our daily lives, paving the way for a healthier and more balanced mindset. [...] Early morning light exposure plays a pivotal role in setting our circadian rhythm for the day. When we expose ourselves to natural sunlight in the early morning, we signal to our internal body clock that it’s time to wake up and be alert. This exposure helps regulate the production of melatonin, the sleep hormone, and enhances the release of serotonin, a neurotransmitter associated with mood and well-being.
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link.springer.com
article
https://link.springer.com/article/10.1007/s11920-026-01671-7
Recent randomized controlled trials using light therapy, large-scale epidemiological studies, and neurophysiological investigations demonstrate that habitual patterns of daytime and nighttime light exposure are associated with a broad range of mental health outcomes. Higher daytime light exposure is generally associated with better mood and lower depressive symptomatology, whereas greater exposure to light at night is linked to increased risk of depression, anxiety, and sleep disturbance. [...] Light is a fundamental environmental signal that shapes human physiology, behaviour, and mental health. Beyond vision, light exposure regulates circadian rhythms, sleep, neuroendocrine function, arousal, and brain circuits implicated in emotional regulation. This review synthesizes recent evidence linking light exposure to mental health and argues that light should be conceptualized as a core, modifiable component of the mental health exposome – the cumulative, dynamic set of environmental [...] To conceptualize how light exposure may influence mental health, we outline a framework linking behavioural determinants of light exposure to biological mechanisms and clinical outcomes (Fig. 1). In this framework, daily behaviour and environmental context shape patterns of 24-h light exposure, which influence circadian, sleep and neural pathways that regulate affective processes. These biological effects manifest in intermediate phenotypes such as circadian alignment, sleep quality and daytime
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bestlifenj.com
news
https://www.bestlifenj.com/post/daylight-changes-affect-mental-health
A study conducted from 2014 to 2017 examined 109 office workers across five federal buildings and found some striking results. Workers who had high exposure to morning light reported better sleep quality and lower depression scores. Those seated near windows, where they received more natural light, enjoyed an extra 46 minutes of sleep per night compared to colleagues in windowless spaces. [...] You can enhance your exposure to natural light by opening blinds, trimming trees that block sunlight, or setting up your workspace near windows. Increased exposure to daylight has been linked to earlier sleep onset and more stable sleep patterns. [...] Spending time in natural daylight, even when you're indoors, can do wonders for your mood and mental well-being. Here are some simple ways to bring more natural light into your daily routine:
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psychiatrist.com
news
https://www.psychiatrist.com/news/study-illuminates-the-dark-side-of-light-ov…
A large new study uncovers the mental health risks from excessive light exposure.
The research finds a clear correlation between nighttime light and increased symptoms of insomnia, depression, and anxiety.
The study emphasizes the need for limited artificial light exposure at night to safeguard mental well-being. [...] The study found a clear correlation between nighttime light exposure and psychiatric disorders. Conditions such as insomnia, depression, and anxiety were prominently affected by imbalances in light exposure. Excessive nighttime light exposure specifically led to a 20 percent increase in symptoms associated with this list of psychiatric disorders. [...] Streetlights, smartphones, and computer screens keep our world in a perpetual state of brightness. And now new research published in Nature Mental Health clarifies just how much this light overexposure may affect mental health.
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pmc.ncbi.nlm.nih.gov
official
https://pmc.ncbi.nlm.nih.gov/articles/PMC7916252
Outdoor activity is known for its potential benefits to mental health and subjective well-being , though it may be difficult to understand the specific contributions of being exposed to a natural environment or to natural light, since the two are combined [78,79]. A 2016 study tried to understand whether there was a correlation between exposure to sunlight and the mental health of workers. A distinction was made between direct and indirect light as they would have different actions on the human [...] As to mood, many studies have confirmed the positive role of exposure to a natural environment and to natural light [78,79,81,82]. Nevertheless, this beneficial effect was more evident when comparing exposure to a natural environment and to a markedly urban one, rather than when comparing exposure to a natural environment and a more neutral one . [...] 81..An M., Colarelli S.M., O’Brien K., Boyajian M.E.. Why We Need More Nature at Work: Effects of Natural Elements and Sunlight on Employee Mental Health and Work Attitudes. _PLoS ONE_. 2016. 11:e0155614. doi: 10.1371/journal.pone.0155614 [DOI] [PMC free article] [PubMed] [Google Scholar]
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nature.com
article
https://www.nature.com/articles/s44220-023-00135-8
Circadian rhythm disturbance is a common feature of many psychiatric disorders. Light is the primary input to the circadian clock, with daytime light strengthening rhythms and night-time light disrupting them. Therefore, habitual light exposure may represent an environmental risk factor for susceptibility to psychiatric disorders. We performed the largest to date cross-sectional analysis of light, sleep, physical activity, and mental health (n = 86,772 adults; aged 62.4 ± 7.4 years; 57% women). [...] disorder, PTSD, psychosis, and self-harm behavior. These findings were robust to adjustment for sociodemographics, photoperiod, physical activity, sleep quality, and cardiometabolic health. Avoiding light at night and seeking light during the day may be a simple and effective, non-pharmacological means of broadly improving mental health. [...] years; 57% women). We examined the independent association of day and night-time light exposure with covariate-adjusted risk for psychiatric disorders and self-harm. Greater night-time light exposure was associated with increased risk for major depressive disorder, generalized anxiety disorder, PTSD, psychosis, bipolar disorder, and self-harm behavior. Independent of night-time light exposure, greater daytime light exposure was associated with reduced risk for major depressive disorder, PTSD,
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aimymh.org
article
https://aimymh.org/the-science-of-sunshine-how-light-exposure-enhances-mental…
Exposure to sunlight specifically in the morning can help regulate our circadian rhythm—aka our sleep and hormone balance. It is also targeted enough to be used to stimulate the function of particular organelles (“little organs”) within our cells. No other form of energy (sound, chemical, touch) can target specific locations in cells, organs, and the body just as precisely as light can. In fact, exposure to specific wavelengths of light can improve brain function and potentially prevent [...] Sunlight does all this and more. It can improve our immune system, protect melatonin, and increase the release of beta-endorphins—countering not only physical, but emotional pain. Morning light triggers cortisol for alertness and focus (remember: not all stress is bad stress) and sets a timer for our bodies for falling asleep later at night. An additional study found that 20-30 min of midday sun exposure for 2-3x a week increased testosterone and estrogen levels, leaving both males and females [...] Skip to content
can similarly support our mental health, with specific positive benefits for depression. Avoiding light at night can prevent activation of the eye to the peri habenular pathway, which has been linked to depression.
Sure, I can feel the difference that a neighborhood walk around the block on my lunch break has on my mindset. And yet, how can light exposure be this impactful to ward off depression?