The darker months can feel difficult. Many people notice their energy levels dropping as soon as the daylight disappears, and light therapy is increasingly being mentioned as a natural way to break that pattern.
Please note! The text below is not intended as medical advice. This text has been compiled based on our own knowledge, user experiences and various online sources.
Table of contents
What is depression?
Depression is more than feeling down. It is a prolonged state of low mood in which energy, motivation and enjoyment can decline significantly. Many people also experience sleep problems, loss of concentration, irritability or a feeling of emptiness.
There are different forms of depressive symptoms. Some are related to the seasons, such as the winter blues or seasonal depression, while others can occur throughout the year. Light plays a greater role in this than many people think: it affects our sleep-wake rhythm, our hormones and even our mood.
How does light therapy work for depressive symptoms?
Light therapy uses bright, UV-free white light to support processes in the brain related to energy, alertness and mood.
- Melatonin regulation: During the darker months, the body may continue producing too much melatonin, which can make you feel sleepy and lethargic. Bright morning light helps normalize this process.
- Supporting the sleep-wake rhythm: The light gives your brain a clear signal that it is morning. This helps restore your rhythm and makes you feel more alert during the day.
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Influence on mood and energy: Many people find that after a period of light therapy, they feel less tired and have more initiative. This is because light indirectly affects neurotransmitters involved in mood.
View all red light therapy panels
What do studies show?
There is increasing research into red light therapy, but the evidence is not yet conclusive. What do we know so far?
- Seasonal depression: Research describes how the sleep-wake rhythm can be supported with bright morning light.
- Non-seasonal depressive symptoms: A meta-analysis shows that light therapy may play a supportive role in adults with mild to moderate symptoms.
- People with intellectual disabilities: Light therapy is used in disability care; caregivers often observe greater alertness or cheerfulness. (Source)
- Adolescents: A study of young people with moderate to severe depression found no significant difference between light therapy and a control group.
How to use light panels
- Use light therapy in the morning, immediately after waking up.
- Place the panel 20–40 cm away.
- Sessions usually last 20–30 minutes.
- Keep your eyes open, but do not look directly into the light.
- Combine it with daily routines such as having breakfast or reading.
- Use it daily for 1–3 weeks for the best effect.
- Start slowly if bright light feels uncomfortable.
Who is it suitable for and who is it not suitable for?
Often used by people who:
- are sensitive to limited daylight
- experience the winter blues
- have difficulty getting up or have a disrupted rhythm
- experience low moods during the darker months
Situations requiring caution
- certain eye conditions
- medication that increases light sensitivity
- severe depressive symptoms (always seek professional help)
Conclusion
Light therapy is an accessible way to support the sleep-wake rhythm and is widely used for winter-related low moods. Research shows that it may play a role particularly for seasonal symptoms, while its effects for other forms of depression may vary.
It is not a replacement for professional care, but it can be a valuable addition to a broader approach.
