The Health Benefits of Saunas

It’s no coincidence that the sauna has become a fundamental part of many cultures: people have long noted an improvement in their well-being after sessions and observed that steam works wonderfully as a preventive measure. The Finns have a saying: «If vodka, tar, and the sauna haven’t helped you, then you’re probably dead».

But scientific research in recent years has answered the question «why». So today we’re talking about how saunas generally affect health from a scientific perspective.
The secret lies in the sauna's extremely hot environment, which triggers a complex cascade of reactions in the body that generally have a very positive effect on a person. When the air temperature in a traditional Finnish sauna reaches 80-100°C, the skin becomes the primary organ of heat exchange.

The sauna – a workout for the heart, even for the laziest among us

As soon as you step into the sauna, your body begins important work. Blood vessels dilate, and your heart beats faster – just as it does during moderate physical activity. This provides a decent cardiovascular workout and is an attractive option for a «workout for the lazy». At the same time, cells begin synthesizing special «protective proteins» (heat shock proteins), which repair damaged structures and maintain cellular health.

Sauna – a way to avoid heart attacks

A large-scale Finnish study (over 20 years of observations of thousands of people) showed that those who go to the sauna 4-7 times a week have a significantly lower risk of sudden cardiac death and heart attack compared to those who visit it once a week. In addition, regular sauna use lowers blood pressure and reduces arterial stiffness – precisely the indicators doctors monitor throughout a person’s life.

The sauna as a brain booster

The Finnish studies mentioned above reveal something else: people who frequently go to the sauna have a significantly lower risk of developing dementia and Alzheimer’s disease. There are several explanations: improved blood flow to the brain, reduced inflammation in the body, and stimulation of BDNF, the so-called «brain fertilizer», which helps nerve cells survive and form new ones. This particularly affects the hippocampus – the area responsible for memory.

For sound sleep and a sense of happiness

After a sauna, many people describe a state of deep calm and mental clarity. It’s no surprise, since heat activates serotonin pathways in the brain (the same mechanism targeted by antidepressants) and stimulates the production of endorphins – natural «happiness hormones». The Japanese even have a separate word for this state – "totonou".

As for sleep: after a sauna, the body actively loses heat, and this gradual cooling signals the brain to transition into deep sleep. Therefore, an evening sauna is one of the best natural ways to improve the quality of your night’s rest.
In addition, the hot air in the sauna dilates the bronchi and thins mucus, making it easier for people with asthma or chronic lung diseases to breathe. At the same time, the number of immune cells in the blood increases, helping the body better fight off viruses. And for joint pain – such as arthritis, fibromyalgia, or back pain – the heat reduces stiffness and provides noticeable relief.

So, how should you use the sauna correctly?

Scientists recommend having 4-7 sauna sessions per week, each lasting 15-20 minutes. This will provide the best benefits for your heart and brain. Be sure to drink water before and after (Finns drink it during as well). After the sauna, cool off briefly (with a cold shower or by jumping into an ice hole), then rest. Keep in mind that alcohol and the sauna are absolutely incompatible.