For some, it is the preferred ritual of Olympic athletes. For others, it is the latest frontier of longevity. For still others, it is simply a passing trend.
Cryotherapy has existed for years suspended between medicine, sport and wellness, accompanied by promises ranging from muscle recovery to anti-aging, from weight loss to mood enhancement.
The reality, as often happens, is more interesting than the slogans.
The correct question is not whether cryotherapy works or not; the right question is: what does it really work for?
What Cryotherapy Really Is
The term cryotherapy refers to the therapeutic use of cold.
In medicine it has existed for decades and includes very different techniques: local ice application, cold water immersion, localized cryotherapy and total body systemic cryotherapy.
The form most widespread in wellness today is Whole Body Cryotherapy (WBC), developed in Japan in the 1970s for the treatment of rheumatoid arthritis.
During treatment, the body is exposed for two or three minutes to temperatures generally ranging between -110°C and -140°C in refrigerated chambers or nitrogen-powered cabins.
What Happens to the Body During Those Three Minutes
The body’s response to extreme cold is immediate.
Peripheral blood vessels constrict, blood flow is redistributed toward the central organs and the sympathetic nervous system rapidly increases its activity.
At the end of the session, the opposite phenomenon occurs: vasodilation promotes the return of blood to the periphery and a complex neuroendocrine response is observed involving adrenaline, noradrenaline and numerous inflammatory mediators.
It is precisely on this adaptive response that the biological effects of cryotherapy are based.
The Most Documented Benefit: Muscle Recovery and Post-Exercise Pain
On one point, the scientific literature is relatively concordant.
Cryotherapy can reduce the perception of muscle pain and accelerate recovery after intense exercise or sports competitions.
The most recent meta-analyses show improvements especially in reducing DOMS, the so-called delayed onset muscle soreness that appears 24-72 hours after intense effort.
It is therefore not surprising that many professional teams have integrated cryotherapy into their recovery protocols.
Inflammation: Cold Does Seem to Have a Real Biological Effect
In recent years, the most interesting evidence has been emerging precisely on the systemic inflammation front.
A meta-analysis published in 2025 observed reductions in certain pro-inflammatory markers and an increase in anti-inflammatory cytokines after repeated exposures to systemic cryotherapy.
In particular, changes were observed in the levels of IL-1β, IL-10 and high-sensitivity C-reactive protein, biomarkers frequently used in research on low-grade chronic inflammation.
This does not mean that cryotherapy “cures inflammation,” but it suggests that cold may act as an adaptive stimulus capable of modulating certain immune responses.
Does Cryotherapy Promote Weight Loss?
This is probably the most widespread myth.
Cold exposure does indeed increase energy expenditure and stimulates brown adipose tissue, the so-called “metabolically active” fat.
However, in the current state of knowledge, there is no evidence demonstrating clinically significant weight loss achievable through cryotherapy alone.
Thinking of replacing diet and physical activity with three minutes in a cold chamber is simply unrealistic.
Sleep, Mood and Stress: A Frontier Still Open
One of the most fascinating aspects concerns the effects on the autonomic nervous system.
Some preliminary studies suggest improvements in sleep quality, perception of fatigue and subjective well-being after repeated cycles of cryotherapy.
The mechanisms may involve the vagus nerve, neuroendocrine regulation and the stress response.
The evidence, however, is still insufficient to consider cryotherapy a treatment for insomnia, anxiety or depression.
Are There Risks?
Yes.
When performed in certified facilities and under professional supervision, cryotherapy is generally considered safe.
However, there are important contraindications for people with uncontrolled hypertension, unstable cardiovascular diseases, Raynaud’s phenomenon, peripheral neuropathies and certain respiratory pathologies.
The main international regulatory authorities also note that no total body cryotherapy device has been approved as a medical treatment for most of the commonly advertised indications.
So: Does Cryotherapy Work or Not?
The most accurate answer is probably this:
- For sports recovery and muscle pain reduction, the answer is YES
- For inflammation modulation, the evidence is becoming increasingly interesting.
- For sleep, psychological well-being and stress, the results are promising but still preliminary.
- For weight loss, anti-aging and “miraculous detox,” science today offers no convincing confirmation.
Cryotherapy: From Arthritis Treatment to Global Wellness Phenomenon
And this is perhaps the most interesting lesson of cryotherapy: in contemporary wellness, cold is not magic—it is a biological stimulus.
And like all biological stimuli, it can be useful, powerful and even transformative, provided it is used in the right context and with realistic expectations.
