Heat therapy and sauna

Heat therapy is an ancient practice that is used in many cultures around the world. From the traditional sauna in Finland to modern heat therapy techniques in physiotherapy - the applications are diverse and the health benefits far-reaching. In this article, we delve deep into the topic of heat therapy and highlight the different aspects and uses of this fascinating method. If you are interested in how cold affects your body, then we have covered this topic in the article Cold therapy prepared for you. Here we answer the question of whether heat therapy or the sauna can prolong life.

Heat therapy: What is it?

To begin with, we must first clarify what we mean by the term. Heat therapy, also known as thermotherapy, is a form of treatment in which heat is used to relieve pain, relieve muscle tension and promote blood circulation. It is used in various forms, including hot packs, heating pads, heat lamps, ultrasound and, of course, saunas. Biohackers such as Tim Ferris in particular use various forms of heat to optimize their bodies. But more on that later. First of all, let's turn to a topic that most of us are familiar with: the sauna. We'll put the sauna to the scientific test and look at what studies say about regular sauna sessions. Is sauna healthy for our bodies and can the heat even help us live longer and healthier lives?

Is sauna healthy?

The question “Is sauna healthy?” can be answered quite clearly with a yes. Such questions are not always easy to answer in medicine, as it requires a large number of test subjects and a lot of time. This is exactly what the scientists have done in this Study They observed almost 1700 people for 15 years. After the researchers took other factors into account, it was shown that regular sauna visits could reduce the risk of cardiovascular disease. But how exactly does sauna affect our bodies?

Did you know?

Finland is considered the birthplace of the sauna and Finns love their saunas. For a population of just 5 million, there are over 3 million saunas in Finland. There are probably more saunas in Finland than cars!

How does sauna affect our body?

The heat of the sauna triggers a series of reactions in our body. This includes the activation of specialised proteins, so-called heat shock proteins. More on this in a moment. First, we will give you a brief overview of the effects that sauna sessions can have on your body:

• Improving cardiovascular health: The heat in the sauna causes blood vessels to dilate, which improves blood flow and can lower blood pressure. Studies have shown that regular sauna users have a lower risk of cardiovascular disease.
• relaxation and stress reduction: The heat promotes the release of endorphins, the so-called happiness hormones, which reduce stress and induce a feeling of relaxation and well-being.
• detoxification: Sweating in the sauna helps eliminate toxins and heavy metals from the body. This can cleanse the skin and strengthen the immune system.
• pain relief: The increased blood circulation caused by the heat can help relieve muscle pain and joint pain. People with chronic pain conditions such as arthritis can particularly benefit from regular sauna sessions.
• Improving respiratory health: The moist heat in the sauna can help open the airways and make breathing easier. This is especially beneficial for people with asthma or chronic bronchitis.

Did you know?

During a sauna session, not only endorphins are released, but also dynorphins. These are neuropeptides that can bind to the opioid receptor. Dynorphins can cause some discomfort and tension in some people, while at the same time ensuring that our happiness hormones (the endorphins) work for longer. The combination of dynorphins and endorphins leaves us relaxed and happy after a sauna.

Heat shock proteins – the key to longevity?

We have already mentioned them briefly, the heat shock proteins (HSPs) that are produced by your body during a sauna visit. Behind this special class of proteins, which are produced by cells in response to stress factors such as heat, cold, lack of oxygen and toxins, there could be an effective tool for extending our Health span Heat shock proteins play a central role in protein homeostasis and cell protection. Sauna sessions, which represent a controlled and targeted heat stress, can promote the production of these proteins. We will now look in more detail at how exactly this works in our body and what molecular effects the heat shock proteins have.

What are heat shock proteins?

Heat shock proteins are a group of proteins that act as molecular chaperones. Chaperones are part of our “garbage disposal system”. They help to fold, stabilize and transport other proteins in the cell. You can find out more about our “garbage disposal system” and why it is so important for a longer life in our article on Senescence.

But back to the heat shock proteins. HSPs are present in all cells and organisms and are synthesized in increased amounts in response to various stress conditions. The most important heat shock proteins include HSP27, HSP60, HSP70 and HSP90, which are named after their molecular weight in kilodaltons (kDa).

Functions of heat shock proteins

• Protein folding and repair: HSPs support the correct folding of newly synthesized proteins and help to repair incorrectly folded or damaged proteins.
• Protection against protein aggregation: HSPs prevent the aggregation of proteins that tend to clump together under stress conditions, which can lead to cell damage.
• Stabilization of proteins: They stabilize proteins and protect them from denaturation and degradation, especially under extreme conditions.
• Transport of proteins: HSPs assist in the transport of proteins across cell membranes and within the cell to ensure their function in the right places.
• Immune system modulation: Heat shock proteins can affect the immune system by acting as antigen presenters and enhancing the immune response.

Sauna sessions and heat shock proteins

Saunas expose the body to a controlled heat stress, which leads to the activation of the production of heat shock proteins. Heat activates various cellular stress response pathways, including heat shock factor 1 (HSF1), which regulates the expression of heat shock proteins. This response is part of the body's natural defense mechanism to protect cells and tissues from the potential damage caused by heat. By increasing the production of heat shock proteins, saunas help maintain protein homeostasis, which is critical for cellular health and function. This explains many of the benefits of saunas mentioned above. Heat shock proteins affect aspects such as:

• Improved recovery and performance: Athletes use saunas to improve muscle regeneration and performance. The increased HSP levels support the repair and building of muscle proteins.
• Protection against neurodegenerative diseases: Heat shock proteins play a role in protecting nerve cells and could thus reduce the risk of neurodegenerative diseases such as Alzheimer's and Parkinson's.
• Strengthen the immune system: By modulating the immune system, heat shock proteins can strengthen the body's defenses and increase resistance to infections.
• longevity: Some studies suggest that regular activation of heat shock proteins through sauna use may contribute to longevity by improving cellular health and resilience to stress.

How often should you go to the sauna?

The frequency of sauna sessions depends on individual health goals and general health. In general, it is recommended to go to the sauna 1–3 times a week to maximize health benefits. In the study mentioned above, the cardioprotective effect was measurable from 2 sauna sessions per week. Some participants also used the sauna daily, so the authors concluded that for those who enjoy it and have no health problems, even a daily sauna session can be beneficial

Going to the sauna every day, healthy?

The question of whether daily sauna visits are healthy is a little more complex. For most healthy people, a daily sauna visit can have positive effects, as we have already described. However, it is important to monitor your own reaction to the heat and ensure that you drink enough fluids to avoid dehydration. You should also avoid going to the sauna if you have a cold. Although sauna visits can have a preventative effect against colds, if you have already caught one, the additional strain on your body is often too much.

Did you know

In Finland there is a gondola with a built-in sauna. However, this sauna pleasure is not cheap. You pay a proud 1500 euros for this very special Gondola ride.

Sauna and cold baths

A popular practice among sauna-goers is alternating between a sauna and a cold bath. This method, known as contrast therapy, uses the benefits of heat and cold to increase circulation and boost the immune system. After the heat of the sauna, jumping into a cold plunge pool or taking a cold shower can help constrict blood vessels, which in turn increases blood flow and speeds up recovery. This practice can also stimulate the nervous system and provide an energy boost. Successful podcaster and neuroscientist Andrew Huberman uses this type of training once a week, going into a 15-degree sauna three times for 20-90 minutes. In between, he cools off in an ice bath for 5 minutes.

Heat therapy and sauna – the same thing?

Now that we have talked at length about the benefits of the sauna, we want to focus more on heat therapy. Even though sauna applications are a large part of heat therapy, there are other ways we can use the heat to our advantage. The health benefits of heat therapy are similar to those of the sauna: pain relief, improved mobility, promoting healing through better circulation, relaxation and strengthening the immune system.

Where is heat therapy used?

Heat therapy is used in many areas of medicine and rehabilitation, including:

• Physiotherapy: Treatment of muscle and joint pain, rehabilitation after injuries and improvement of mobility.
• Sports medicine: Prevent and treat sports injuries, promote recovery and improve performance.
• Rheumatology: Relief of pain and stiffness in rheumatic diseases such as arthritis.
• Pain clinics: Management of chronic pain and promotion of relaxation.
• Wellness and Spa: Promotes general well-being, relaxation and stress reduction.

Heat therapy in physiotherapy

Heat therapy is often used in physical therapy to treat a variety of conditions. It helps to relieve pain, improve muscle function and promote the healing of injuries. Commonly used methods of heat therapy in physical therapy include:

• Hot air therapy: Use of hot air to treat muscle and joint pain.
• infrared lamps: Radiant heat that penetrates deep into the skin and improves blood circulation.
• Hot packs: Moist heat pads that are applied to painful parts of the body.
• Ultrasound therapy: Use of high frequency sound waves to heat deep tissue layers and promote healing.

Heat therapy using ultrasound

Ultrasound heat therapy is a specialized form of heat therapy that uses high-frequency sound waves to heat deeper layers of tissue. This method is particularly effective for treating muscle tension, tendonitis and joint pain. The ultrasound creates mechanical vibrations that stimulate blood circulation and cellular metabolism, leading to accelerated healing and pain relief.

Biohacking and heat therapy

Biohacking is the modern approach to optimizing the performance of the body and mind through targeted interventions and methods. We have already covered this topic in a detailed article, as well as the overlap with the larger topic of longevity.

Heat therapy has established itself as an important component in the field of biohacking. The most important aspects are:

• improvement in sleep quality Well-regulated sleep is essential for overall health and performance. Heat therapy, especially through the use of saunas or warm baths before bedtime, can improve sleep quality. The heat helps to relax the body and promote melatonin production, leading to deeper and more restful sleep.
• Promote muscle regeneration After intense workouts, applying heat therapy can speed up muscle recovery. Heat increases blood flow and promotes the removal of lactic acid and other metabolic waste from the muscles, contributing to faster recovery.
• Stimulation of mitochondrial function mitochondria are the energy centers of the cells. Heat therapy, such as infrared saunas, can improve the function of the mitochondria. The heat increases the production of ATP (adenosine triphosphate), the body's main energy molecule, which leads to more energy and performance.
• Promote detoxification Sweating in a sauna helps the body eliminate toxins and heavy metals. This detoxification is an important aspect of biohacking, as a clean, toxin-free body functions better and is less susceptible to disease.
• Optimization of hormone function Regular sauna use can positively affect the production and regulation of various hormones, including growth hormones and endorphins. This contributes to improved mood, higher energy and better overall health.

Biohackers and their methods for heat therapy

Several prominent biohackers have recognized the benefits of heat therapy and incorporated it into their daily routines. Here are some examples:

Dave Asprey, the founder of the Bulletproof Diet and a leading biohacker, swears by regular sauna sessions and infrared therapy. He uses these methods to increase his physical performance, reduce stress, and improve his overall health.

Michael Greve, another well-known biohacker, incorporates saunas and heat therapy into his lifestyle to promote recovery and support overall health. Greve emphasizes the importance of regular sauna use to support detoxification and improve cardiovascular health.

Andreas Breitfeld is an enthusiastic sauna-goer and has one in his biohacking lab in Munich. He likes to combine the effects of heat therapy with an ice bath or a visit to the cryochamber.

Dr Andrew Huberman a neuroscientist, has logs for targeted heat therapy to improve cognitive function and stress management. He recommends specific heat applications to improve health and performance.

Tim Ferris, author of The 4-Hour Body and The 4-Hour Workweek, uses heat therapy as part of his comprehensive approach to self-improvement. Ferris emphasizes the benefits of sauna sessions for improving recovery and increasing physical and mental performance.

Heat therapy and biohacking: applications and benefits

In addition to the classic sauna, there are other areas of application for heat therapy:

Heat therapy for the back Back pain is a common problem that affects many people. Heat therapy can provide an effective solution. Applying heat to the back can relieve muscle tension, improve circulation and reduce pain. Heating pads, warm baths and infrared lamps are effective methods for treating back pain. Another method is the use of Capsaicin containing creams or patches. Capsaicin is the molecule that makes chilis hot.

Fango heat therapy Fango, a mineral-rich mud that is heated and applied to the body, is a popular form of heat therapy. Fango heat therapy is often used in physical therapy and spa treatments to relieve pain, improve circulation, and promote healing. The mineral ingredients in the mud also help detoxify and heal the body.

Ultrasound heat therapy Ultrasound heat therapy is an advanced method that uses high-frequency sound waves to heat deeper layers of tissue. This method is particularly effective for treating muscle tension, tendonitis and joint pain. Ultrasound increases blood flow and cell metabolism, which accelerates healing and relieves pain.

Infrared saunas Infrared saunas are a modern twist on the traditional sauna that uses infrared rays to heat the body. These rays penetrate deeper into the skin and provide an effective way to detoxify, relieve pain, and improve overall health. Infrared saunas are particularly popular with biohackers due to their ability to improve mitochondrial function and increase energy production.

Conclusion

Heat therapy, in all its forms, offers a variety of health benefits, ranging from relieving pain to improving overall health and well-being. Saunas and other heat therapy methods are valuable tools for promoting physical and mental health. We can use many of these methods at home, making them easier to incorporate into our daily routines. Whether they prolong life is not yet fully understood, but they may provide better well-being, and that alone is a benefit.

Incorporating regular heat therapy into your daily routine can not only improve your quality of life, but also help prevent long-term health problems. Whether through the relaxing heat of a sauna, the targeted use of heating pads or innovative methods such as ultrasound heat therapy - the possibilities are varied and the benefits numerous.