Red Light Therapy and colds: does it really work?

No, red light therapy does not cure a cold, and there is no evidence that it shortens its duration. However, there are indirect effects that may provide relief: improved blood circulation, reduced inflammation, relaxation of the airways, and support for cellular energy. Think of it as support alongside rest and medical care, not as a replacement for them. Below, you’ll read what has and has not been demonstrated, along with tips on duration, frequency, and distance.

A cold can completely knock you out: a stuffy nose, coughing, a sore throat, and that miserable feeling of being unwell. That’s why we quickly turn to anything that may offer relief: steam baths, vitamin boosts, herbal tea… you name it. Red light therapy is also mentioned as a possible source of additional support. But can red light actually help with cold symptoms?

Please note! The text below is not intended as medical advice. This text is based on our own knowledge, customer experiences, and various online sources.

Table of contents

• Can red light therapy help with a cold? The definitive answer!
• What is red light therapy and how does it work?
• What are the potential benefits when you’re sick?
• Research & theories: what do we know and what don’t we know?
• Is Red Light Therapy safe?
• How can I use light therapy? Practical tips
• Conclusion

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Can red light therapy help with a cold? The definitive answer!

The short, honest conclusion is: There is no strong scientific evidence that red light therapy can cure or shorten a cold.

But… that doesn’t mean it can’t have value. Many studies show indirect benefits, such as:

• improved blood circulation
• reduction of inflammation
• relaxation of the airways
• support for cellular energy (ATP)
• relief from tension, pressure, or congested sinuses

In addition, many users experience relief from symptoms such as a stuffy nose, low energy, or a general feeling of malaise.

In short: not proven as a medicine, but promising as a supportive therapy during a cold.

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What is red light therapy and how does it work?

Red Light Therapy uses specific red light wavelengths and Infrared light that support the body in a natural way. Red light essentially gives your cells an energy boost, while infrared penetrates deeper into muscles and tissues, providing pleasant, relaxing warmth.

This combination makes red light therapy interesting for recovery, relaxation, skin improvement, and even symptoms associated with colds. It works by activating cells responsible for energy production and recovery processes.

Reading tip: Infrared and red light: How lamps and light work

What are the potential benefits when you are ill?

Although red light therapy does not cure or prevent a cold, it may offer several potential benefits that are relevant when you are ill:

• Relief from a blocked nose and sinus pressure: Heat and improved blood flow may help loosen mucus and reduce pressure in the sinuses.
• Less sore throat or coughing: Through relaxation of surrounding tissues and increased circulation.
• Support for recovery processes: Increased ATP production helps recovery cells function more efficiently.
• Reduced inflammation: Relevant for colds, rhinitis, allergies, and irritated airways.
• More energy during recovery: Many users find that they feel less exhausted.
• Positive effect on sleep: Red light in the evening may increase melatonin, helping you sleep better, which is crucial for your immune system.

Although these are benefits that many people notice or that emerge from research, it remains important to emphasize: this is supportive, not a replacement for medical treatment.

Research & theories: what do we know and what don’t we know?

More and more research is being conducted into how red light therapy works. This is yielding interesting insights, but also important nuances. Here is what science currently indicates and what is still unclear.

What we do not know (no evidence yet)

• Red Light Therapy does not cure a cold.
• It has not been proven to shorten the duration of a cold.
• It does not kill viruses in the body.

What we do know (indirect, but relevant research findings)

• Improved airway inflammation & rhinitis: RLT has been shown in studies to reduce inflammation and symptoms of allergic rhinitis. Source
• Less oxidative stress & inflammation: Research shows that red light lowers oxidative stress and may reduce inflammation. Source
• Support for mitochondria, more ATP: More energy means faster cellular repair processes. Source
• Improved lymphatic system function: Important for waste removal and immune response. Source
• Positive effects on respiratory problems in broader studies: Research on COPD, asthma, and viral respiratory infections shows reduced inflammation and symptoms, although this research is still in its early stages.

Is Red Light Therapy safe?

Yes, light therapy is safe when used according to the guidelines. Red light does not produce harmful UV radiation and does not feel hot. When using panels, wear protective eyewear and follow the recommended distances and durations.

How can I use light therapy? Practical tips

• Duration: On average, use the panels for 10 to 20 minutes per area. For full-body lamps, this can be extended to 15 to 30 minutes.
• Frequency: For the best results, use it 3 to 5 times per week. Daily use is also fine if your body responds well to it.
• Distance: The ideal distance is usually between 30 and 50 cm from the panel. The closer you are, the more intense the effect. Always follow the recommendations for the specific product.

Conclusion

Red Light Therapy is not a miracle cure for the common cold, but it may provide relief through effects such as improved circulation, reduced inflammation, and support for cellular energy.

They are safe and easy to use at home and can be a valuable addition to your recovery, as long as you view them as support rather than a replacement for medical care.