Table of contents

1. Causes of a cold - how it develops
2. The basics of red light therapy?
3. Treating colds with red light
4. Effectively prevent colds with red light therapy
5. Application tips for everyday life
6. Summary and Outlook

1. Causes of a cold - how it develops

A common cold begins when viruses such as rhinoviruses or coronaviruses (not to be confused with SARS-CoV-2) enter the body through the mucous membranes of the nose, throat, or eyes. Infection usually occurs via droplets spread through coughing, sneezing, or contact with infected surfaces.

Once the viruses enter the body, they use the cells of the mucous membranes as hosts to multiply. This does not go unnoticed by the immune system: it reacts by initiating defense mechanisms. This reaction leads to inflammation, which in turn causes symptoms such as the following:

• Sore throat and pain
• Blocked or runny nose
• Cough
• A feeling of pressure or pain in the head
• Exhaustion and weakness
• Low fever

The symptoms, however, do not result directly from the virus itself, but from the body's defense against the infection. To fight the virus, the immune system releases cytokines. These signals dilate the blood vessels, allowing immune cells to reach affected areas such as the nose and throat more quickly.

While this process strengthens the immune system, it also leads to typical symptoms. Sore throats are caused by inflamed mucous membranes, a blocked nose by swollen tissue, and coughs by irritation of the airways from mucus.

A slight fever is another sign of the body's activity, as the elevated temperature inhibits the multiplication of viruses. However, these processes are energy-intensive, which is why those affected often feel tired and lethargic.

Cold symptoms show how the body is reacting to an infection. Despite the discomfort, they are a natural part of the body's defense and healing process.

2. The basics of red light therapy

Red light therapy (RLT) is a special form of light treatment that uses light waves from the red and near-infrared range, typically with wavelengths between 600 and 850 nanometers. These light waves penetrate deep into the skin and have positive effects on the body's cells. By stimulating the mitochondria, the "powerhouses" of our cells, healing processes and various cellular functions are stimulated and supported.

The key effects of red light therapy include:

• Improved blood circulation
• Reduction of inflammation
• Promoting cell repair and regeneration
• Stimulation of collagen production
• Strengthening the immune system

3. Treating colds with red light

Red light and infrared light therapy can be used both preventively and as a supportive treatment during a cold. If a cold does strike, the goal is often the fastest possible recovery. Red light therapy offers various mechanisms that can effectively contribute to relief:

1. Improved blood circulation:

Red light therapy promotes blood circulation in the treated areas of the body. This improved circulation transports more oxygen and nutrients to the affected cells, while waste products such as carbon dioxide and inflammatory substances are broken down more quickly. This process accelerates regeneration and can significantly alleviate symptoms such as a blocked nose or headaches.

2. Anti-inflammatory effect:

A common cold is usually accompanied by an inflammatory response to viruses. Red light therapy can be supportive in this process by reducing the release of pro-inflammatory molecules, such as TNF-α (tumor necrosis factor alpha) or interleukins. In this way, the typical symptoms can be alleviated and recovery promoted.

3. Strengthening the immune system:

Red light therapy influences the immune system by stimulating the mitochondria. The mitochondria – the cells' energy suppliers – increase their activity when irradiated, which improves energy production and makes the cells more efficient. A stronger cell can better fight off infectious agents, reducing the likelihood of a cold spreading.

4. Relief from sore throats:

Sore throats are a common symptom during a cold, and red light therapy can help alleviate them. The local application of the light reduces swelling and inflammation, thus contributing to pain relief. At the same time, the warmth of the red light has a relaxing effect on the muscles in the throat and pharynx, further promoting well-being.

5. Reduction of headaches and fatigue:

Headaches and fatigue are typical symptoms of colds. The improved blood circulation and anti-inflammatory properties of red light therapy can reduce the intensity of headaches and accelerate the healing process, leading to faster recovery.

6. Relief from joint pain:

Muscle and joint pain is also a common symptom of colds. Red light therapy increases blood circulation and has an anti-inflammatory effect, which relieves pain and relaxes muscles. The soothing warmth also helps to loosen tense muscles and promotes the release of endorphins, which reduce the perception of pain. This helps the body recover faster and overcome the unpleasant aches and pains.

4. Effectively prevent colds with red light

Are you looking for a natural way to prevent colds? A red light panel could be the perfect addition to your home. Its benefits are numerous and far-reaching, and we believe it belongs in every medicine cabinet.

How does red light therapy help prevent colds?

The preventive use of red light therapy (RLT) to strengthen the immune system is based on several mechanisms that boost the immune system and increase resistance to infections. Here are some important mechanisms of action of red light therapy:

Strengthening of immune cells
Red light acts directly on the mitochondria, the energy suppliers of our cells. These are responsible for the production of ATP (adenosine triphosphate), which powers all cellular processes. When the mitochondria function optimally, the cells can operate efficiently – immune cells such as T lymphocytes and macrophages particularly benefit from this. These immune cells are crucial for recognizing and fighting pathogens. A strengthened immune system can neutralize potential threats early on, before an infection occurs.

Promoting melatonin production
Regular red light therapy stimulates the production of melatonin. While melatonin is known as the "sleep hormone," it also plays an important role in regulating the immune system. It has antioxidant and anti-inflammatory properties. By supporting melatonin production, red light improves sleep quality – and good sleep is essential for a strong immune system, as immune cells regenerate during deep sleep phases.

Improvement of microcirculation
Red light improves blood circulation and promotes microcirculation, ensuring that all body cells, including immune cells, are optimally supplied with oxygen and nutrients. Good blood circulation makes it easier for immune cells to reach infected or inflamed areas. This ensures that the immune system works precisely where it is needed and that waste products are quickly removed.

Increased antioxidant capacity
Red light therapy stimulates the production of antioxidant enzymes such as superoxide dismutase (SOD) and glutathione. These enzymes neutralize free radicals, which are generated during immune responses and can lead to cell damage. Free radicals are particularly active during inflammatory processes and can damage tissue. By promoting antioxidant capacity, red light therapy protects cells from oxidative stress and supports an effective immune response.

Reduction of chronic inflammation
Chronic, low-grade inflammation can weaken the immune system and make it more susceptible to acute infections. Red light therapy helps reduce such inflammation by downregulating the production of pro-inflammatory messenger substances. This relieves the burden on the immune system, allowing it to better focus on fighting acute infections.

Supporting collagen production
Collagen plays a vital role in the structure and integrity of the skin and mucous membranes – the first line of defense against pathogens. By promoting collagen production, red light therapy supports the strengthening and regeneration of these barriers. Healthy skin and mucous membranes are better able to prevent the penetration of viruses and bacteria.

Balancing hormonal equilibrium
Red light, with its relaxing effect, can lower cortisol levels, the so-called "stress hormone." A persistently elevated cortisol level can impair immune function by inhibiting the activation of immune cells. By lowering stress levels, the immune system is strengthened, enabling it to fight off infections more effectively.

A red light panel is far more than just a device for treating acute ailments – it offers comprehensive possibilities for promoting health and preventing colds. Its diverse effects on the immune system, blood circulation, and cell regeneration make red light therapy a valuable tool for improving well-being and staying healthy throughout the cold season.

5. Practical Application

Application	Immune system strengthening	Treatment of a cold
Distance to the light source	20-35 cm	10-20 cm
Session duration	12-18 minutes	15-25 minutes
Time of day	Morning or early afternoon	Morning, noon, and evening
Frequency of use	3-4 times per week	1-3 times daily

Recommended body areas for the application of red light and near-infrared light

To prevent a cold:

• Chest area: The rib cage plays a central role in strengthening the immune system, as it contains numerous lymph nodes that have an important function in fighting infections.

• Upper back: Irradiation of the upper back area improves blood circulation and helps to strengthen the immune system.

• Face (forehead and sinuses): Irradiating the face supports the mucous membranes and can therefore increase the body's defenses against respiratory viruses.

• Neck and throat: Radiation therapy in this area promotes lymph circulation, which contributes to improved immune defense.

For the treatment of a cold:

• Chest and lung area: Radiating radiation to the chest can help soothe the mucous membranes of the lungs and relieve the airways.

• Throat and pharynx: Direct irradiation of the throat area relieves inflammation and reduces sore throat pain.

• Face (forehead and sinuses): In cases of symptoms such as a blocked nose and headaches, irradiation of the forehead and sinuses can help to reduce pressure and soothe the mucous membranes.

• Upper back: Radiation therapy to the upper back, especially near the lungs, can help relieve coughs and improve respiratory function.

A device that allows for comprehensive irradiation of the front of the body is ideal for effectively treating the aforementioned areas. The heilys Gen 100 Panel is particularly suitable for this purpose, as it can irradiate the entire side of the body at once, thus eliminating the need for targeted treatment of each individual spot.

6. Summary and Outlook

Cold and flu season may be inevitable, but red light therapy offers a powerful way to support the immune system and prevent colds or alleviate their symptoms. By promoting cellular health and stimulating the body's natural healing processes, red light therapy provides a gentle yet effective method for staying healthier throughout autumn and winter. If you feel a cold coming on, targeted light therapy could be just what you need to support your body in its fight against viruses.

Browse our shop and find the perfect panel for your needs.