KIDNEYS: Could Sauna Help or Be Good For It?

KIDNEYS: Could Sauna Help or Be Good For It?

KIDNEYS: Could Sauna Help or Be Good For It?

The human body is a complex and intricate system, with each organ playing a vital role in maintaining overall health. Among these organs, the kidneys are of paramount importance, responsible for filtering waste and excess fluids from the bloodstream. But, could something as simple as a sauna session have an impact on these vital organs? Let's delve into the science and research surrounding this intriguing question.

The Role of Kidneys in the Body

The kidneys are two bean-shaped organs located on either side of the spine, just below the rib cage. Each day, they filter about 120-150 quarts of blood, removing waste products and excess fluids. These waste products and fluids are then excreted from the body in the form of urine.

Aside from waste removal, kidneys also play a crucial role in maintaining the body's chemical balance. They regulate electrolytes, maintain acid-base balance, and help regulate blood pressure by controlling the body's salt balance. Furthermore, kidneys produce hormones that stimulate red blood cell production and help control calcium and phosphate metabolism, contributing to bone health.

The Sauna Experience

A sauna is a small room or building designed to induce sweating and increase heart rate, mimicking the effects of moderate exercise. Saunas can be dry or wet, with the latter involving the use of steam. The heat and humidity in a sauna can cause the body to sweat profusely, leading to a loss of fluids and electrolytes.

While the sauna experience is often associated with relaxation and stress relief, it also has physiological effects on the body. The heat exposure causes blood vessels to dilate, increasing blood flow to the skin. This increased blood flow can help with muscle relaxation, pain relief, and skin health. However, the impact on internal organs, such as the kidneys, is less understood and is the subject of ongoing research.

Can Sauna Therapy Benefit the Kidneys?

The Impact of Sauna on Kidney Function

Research into the effects of sauna therapy on kidney function is still in its early stages. However, some studies suggest potential benefits. A study published in the American Journal of Hypertension found that regular sauna use reduced the risk of developing chronic kidney disease in men. The researchers hypothesized that the heat stress from the sauna might improve endothelial function, leading to better kidney health.

Another study published in the Journal of the American Society of Nephrology found that heat stress could help protect against acute kidney injury. The researchers found that heat stress induced a protective protein, known as heat shock protein 70 (HSP70), which helped protect the kidneys from injury.

Hydration and Kidney Health

While sauna therapy may have potential benefits, it's important to note that hydration plays a crucial role in maintaining kidney health. The process of sweating in a sauna can lead to fluid loss, which if not replenished, could potentially strain the kidneys. Therefore, it's essential to stay well-hydrated before, during, and after sauna use.

Dehydration can lead to a decrease in blood volume, causing the kidneys to work harder to filter blood. Over time, this could potentially lead to kidney damage. Therefore, while enjoying the potential benefits of sauna therapy, it's crucial to maintain proper hydration to support kidney health.

Considerations and Precautions

Individual Differences

It's important to remember that everyone's body responds differently to heat stress and sauna therapy. Factors such as age, overall health, and pre-existing medical conditions can influence how the body reacts to a sauna. Therefore, what works well for one person may not be suitable for another.

For individuals with kidney disease or other kidney-related health issues, it's especially important to consult a healthcare provider before starting sauna therapy. They can provide guidance based on your specific health situation and needs.

Sauna Safety

While sauna use can be beneficial, it's essential to follow safety guidelines to prevent adverse effects. These include:

  • Limiting sauna sessions to 15-20 minutes at a time
  • Drinking plenty of fluids before, during, and after sauna use
  • Avoiding alcohol and medications that can affect sweating and hydration
  • Listening to your body and exiting the sauna if you feel dizzy, nauseous, or uncomfortable

By following these guidelines, you can enjoy the potential benefits of sauna therapy while minimizing potential risks.


While more research is needed, preliminary studies suggest that sauna therapy could potentially benefit kidney health. However, it's important to approach this therapy with caution, staying well-hydrated and consulting a healthcare provider, especially for individuals with pre-existing kidney conditions.

As we continue to explore the intricate workings of the human body and the potential benefits of therapies like sauna use, it's clear that our understanding of health and wellness is ever-evolving. So, whether you're a seasoned sauna-goer or considering your first session, remember to listen to your body, stay hydrated, and enjoy the journey towards better health.

Enhance Your Kidney Health with SISU

Embrace the journey towards a healthier, more vibrant life with SISU. If you're passionate about reducing the risk of chronic diseases, improving your vitality, and extending your healthiest years, a SISU sauna might be the perfect addition to your wellness routine. Don't let the fear of aging and loss of independence hold you back. Take control of your health and combat the aging process with a daily ritual that supports kidney function and overall well-being. Ready to enhance your quality of life and increase your longevity? Shop saunas now and follow three simple steps to bring the benefits of a SISU sauna into your home. Your journey to a healthier tomorrow starts today.

Back to blog