The clinical research findings on red light therapy’s effectiveness for depression and anxiety are promising. It is not a substitute for psychiatric treatment or psychotherapy. As a complementary treatment, however, it influences several biological processes that are closely related to mood disorders such as mitochondrial function, neuroinflammation, cerebral blood flow and sleep quality.
The research outlines what it currently reveals, how red light therapy works for mental health, who it is for, and where to get professional red light therapy in Richmond, VA.
What Is Red Light Therapy?
Red light therapy, also called photobiomodulation (PBM), uses specific wavelengths of red and near-infrared light, typically between 630 and 850 nanometers, to penetrate tissue at varying depths. At these wavelengths, light energy is absorbed by mitochondria, the energy-producing structures inside cells, triggering a cascade of biological responses including increased ATP production, reduced oxidative stress, and decreased inflammation.
Red light therapy differs from bright white light therapy, which is the lamp-based treatment used for Seasonal Affective Disorder (SAD). Bright light therapy works primarily through the eyes to regulate circadian rhythms and melatonin. Red light therapy works through skin and tissue absorption and, in transcranial applications, directly through the skull to reach brain tissue. Both have evidence for mood support, but they operate through different mechanisms and are used in different ways.
How Red Light Therapy May Affect Depression and Anxiety
It Supports Mitochondrial Function in Brain Cells
The brain is an organ that consumes more energy than any other part of the body. Mitochondrial activity of the brain is consistently found to be decreased in individuals suffering from depression in important brain regions, such as the hippocampus and prefrontal cortex. Therapeutic wavelengths of red and near-infrared light activate the mitochondrial enzyme cytochrome c oxidase, boosting cellular energy production. These brain areas have more available cellular energy, which helps with regulation of mood, attention and emotions.
It Reduces Neuroinflammation
It is now known that neuroinflammation (inflammation in the brain tissue) is a major biological contributor to depression. A review published in Frontiers in Psychiatry in 2024 found that PBM decreases pro-inflammatory cytokines and promotes the brain’s anti-inflammatory mechanisms. The direct downstream effects of reduced neuroinflammation include a range of neuronal functions such as mood, cognition and stress response.
It Improves Cerebral Blood Flow
Research with transcranial photobiomodulation (tPB), near-infrared light directed at the forehead and scalp, reveals a measurable increase in cerebral blood flow to the PFC. The prefrontal cortex is directly involved in emotional regulation, decision-making and the inhibition of the amygdala’s threat response. Better blood flow to this area helps to regulate emotions and decreases hyperreactivity linked to anxiety.
It Supports Sleep Quality and Circadian Regulation
Sleep disturbance is a symptom and a cause of depression and anxiety. Compared to bright white light, red light therapy encourages melatonin output and the natural cycle of the body, especially if done in the evening.
In a 2024 study, researchers noticed a rise in sleep quality and a decrease in subjective mood disturbance when they were using red light therapy in individuals suffering from sleep-related mood symptoms. Since sleep and mood go hand-in-hand, changes in sleep patterns from red light therapy can often result in a measurable change in mood and anxiety the following day.
It May Support Neurogenesis in the Hippocampus
The hippocampus is the part of the brain most related to memory, emotional processing and stress regulation. Studies in animal models indicate that photobiomodulation can stimulate the growth of new neurons in the hippocampus (neurogenesis). Depression medications are also known to facilitate hippocampal neurogenesis, so this action is thought to play a role in the therapeutic actions of depression medications.
Human studies focused directly on red light therapy and hippocampal neurogenesis have yet to be conducted, but the similarities between the two are a major area of active research.
What Does the Clinical Research Actually Show?
The honest answer is that the evidence is promising but still developing.
A pilot study published in the journal Behavioral and Brain Functions studied near-infrared light therapy to the forehead in people with MDD and anxiety. Treatment was associated with substantial reductions in mood and anxiety symptoms. In a 2019 systematic review published in the Journal of Affective Disorders, researchers found that transcranial photobiomodulation was beneficial in individuals with depression. In a 2024 systematic review and meta-analysis, which included randomized controlled trials, the researchers found that photobiomodulation is effective in alleviating depression symptoms in several populations of individuals.
In a randomized controlled trial from 2020, one group of 40 people with generalized anxiety disorder improved their anxiety symptoms by receiving treatment of red light therapy to the forehead and chest once a week for 8 weeks.
Importantly, all major reviews point to the fact that there are still a limited number of quality, high-powered RCTs. While the use of red light therapy for depression and anxiety may be a promising field of study, it is not a widely accepted or proven first-line treatment for depression or anxiety. It’s a distinction that’s important for any clinician.
Red Light Therapy vs. Traditional Depression Treatment
Red light therapy works best when used alongside, not instead of, evidence-based psychiatric and psychological care. Here is how it compares in practical terms.
Antidepressant medications target neurotransmitter systems, primarily serotonin, dopamine, and norepinephrine. Red light therapy targets mitochondrial function, inflammation, and blood flow. These mechanisms are complementary, not competing. Some psychiatrists are beginning to use photobiomodulation as an adjunct for patients with treatment-resistant depression or for those who cannot tolerate standard medications.
Psychotherapy, particularly CBT and DBT, addresses the cognitive and behavioral patterns that drive depression and anxiety. Red light therapy does not address these patterns directly. For people whose depression involves significant cognitive distortions, avoidance, or interpersonal difficulties, therapy remains the central intervention.
For mild-to-moderate depression, seasonal mood changes, anxiety with sleep disruption, or as a complement to existing psychiatric care, red light therapy is a reasonable additional option to discuss with your treatment team.
| Treatment | How It Helps | Role |
| Antidepressants | Balance brain chemicals like serotonin and dopamine. | Primary treatment for moderate to severe depression and anxiety. |
| Psychotherapy (CBT/DBT) | Changes unhealthy thoughts and behaviors while building coping skills. | Core treatment that addresses the root psychological causes. |
| Red Light Therapy | Supports cellular energy, reduces inflammation, and may improve mood. | A complementary therapy that works best alongside medication and psychotherapy—not as a replacement. |
Who Should Consider Red Light Therapy for Mental Health?
Red light therapy may be a relevant consideration for:
People with mild-to-moderate depression who are looking for non-medication adjuncts to support their mental health. People experiencing seasonal mood changes who want additional support beyond standard bright light therapy.
People with anxiety that is significantly connected to sleep disruption, as red light therapy’s effect on sleep quality may indirectly improve anxiety levels.
People with treatment-resistant depression who, under psychiatric supervision, are exploring complementary approaches. People who are already receiving psychiatric medication or psychotherapy and want to add a low-risk, non-invasive complementary treatment.
Who Should Not Use Red Light Therapy
This is one of the most searched questions about red light therapy that competitors consistently fail to address.
Red light therapy is not a suitable treatment for all. If you are on photosensitizing drugs (such as some psychiatric drugs, some antibiotics, antifungals), consult your doctor or psychiatrist before beginning red light therapy.
Never look directly at red light devices as intense light aimed at the eyes can damage the retina. Individuals who have active skin diseases, photosenstivity disorders, or a history of melanoma should consult with their physician about the use of red light therapy.
Red light therapy should not be used in place of a psychiatric assessment, psychiatric treatment, or psychotherapy. Please reach out to your treatment provider or psychiatric crisis hotline if you are experiencing high levels of depression, suicidal ideation or are in a psychiatric crisis.
Red Light Therapy in Richmond, VA
Lumora Rejuvenation at Lumora Health in Richmond, VA offers professional red light therapy as part of an integrated approach to whole-person wellness. Our red light therapy sessions use clinically relevant wavelengths in a supervised clinical environment, designed to complement the psychiatric and mental health care provided across Lumora’s services.
Professional sessions in a clinical setting provide consistent, calibrated light delivery that at-home consumer devices often cannot match. For people who are using red light therapy alongside psychiatric treatment, coordination with a clinical team ensures the approach is appropriately integrated into their overall care plan.
If you are in Richmond, VA and want to learn more about whether red light therapy is a good fit for your mental health support, book a consultation with Lumora Rejuvenation today.
Also Read: Can a Psychiatric Nurse Practitioner Prescribe Medication in Virginia?
At-Home Red Light Therapy vs. Clinic-Based Treatment
Many consumer red light therapy devices are available for home use. Home devices can be effective for general wellness applications, but several considerations are relevant for mental health use.
Device quality varies significantly. Therapeutic photobiomodulation requires specific wavelengths, typically 630 to 850 nm, at sufficient power density to reach target tissue. Many consumer devices do not provide adequate specifications for clinical effects. Session consistency matters. Clinical protocols for mood support in research settings use consistent timing, duration, and placement. Self-administered home sessions are less likely to follow these parameters reliably. For transcranial photobiomodulation specifically, device placement and power output are particularly important and best supervised clinically.
At-home use makes sense for general wellness maintenance once you have established a response in a clinical setting. Starting under clinical supervision provides a clearer picture of whether the therapy is producing the intended effects.
Conclusion
Red light therapy for depression and anxiety is supported by a growing and credible body of research. It acts via biological pathways which are closely related to mood disorders, namely mitochondrial support, reduction of neuroinflammation, enhancement of cerebral blood flow, and improved sleep quality.
It is not a substitute for psychiatric assessment, medication and/or therapy. It is a sensible, evidence-based choice for individuals experiencing mild to moderate depression, mild to moderate anxiety and sleep disruption, or as an adjunct to other mental health interventions for those with mental health issues.
Red light therapy is integrated into the holistic services offered by Lumora Rejuvenation at Lumora Health in Richmond, VA, alongside the psychiatric and behavioral health services we offer.
Book a Lumora Rejuvenation consultation in Richmond, VA to discuss whether red light therapy is appropriate for your mental health needs.
FAQ’s
Can red light therapy help with depression?
Clinical research, including a 2024 meta-analysis in Frontiers in Psychiatry, shows that photobiomodulation (red and near-infrared light therapy) is associated with reductions in depressive symptoms. The evidence is promising but still developing. Red light therapy works best as a complement to psychiatric care, not as a standalone treatment for depression.
How does red light therapy work for mental health?
Red light therapy supports mental health through several biological mechanisms: increased mitochondrial energy production in brain cells, reduced neuroinflammation, improved cerebral blood flow to the prefrontal cortex, and support for sleep quality and circadian regulation. These pathways all have established connections to mood and anxiety.
What is the difference between red light therapy and light therapy for depression?
Standard light therapy for depression, particularly for Seasonal Affective Disorder, uses bright white or blue-spectrum light delivered through the eyes to regulate circadian rhythms and melatonin. Red light therapy uses specific red and near-infrared wavelengths absorbed through skin and tissue, with different mechanisms and applications. Both have evidence for mood support but are distinct treatments.
How many red light therapy sessions are needed for mood benefits?
Research protocols for depression and anxiety have used sessions ranging from weekly to daily, over four to twelve weeks. Meaningful mood improvements in clinical studies were observed within four to eight weeks of consistent treatment. Individual responses vary depending on the condition being addressed and the quality of the device used.
Is red light therapy safe for depression and anxiety?
Red light therapy has a strong safety profile when used at appropriate wavelengths and duration, without direct eye exposure. It does not interact with most medications at the systemic level, though photosensitizing medications warrant precaution. It is not appropriate as a substitute for psychiatric care in moderate to severe depression or anxiety.
Does Lumora offer red light therapy in Richmond, VA?
Yes. Lumora Rejuvenation at Lumora Health in Richmond, VA provides professional red light therapy sessions as part of an integrated wellness and psychiatric care model. Sessions are supervised and designed to complement the behavioral and mental health services across Lumora’s program.