Quick answer: cryotherapy weight loss claims are not backed by solid evidence. The FDA says no whole body cryotherapy device is approved or cleared to treat any medical condition. Mild cold exposure can raise energy use by a modest amount over a full day, but a few minutes in a cold chamber is not a proven way to lose weight.
Cryotherapy weight loss is a popular promise in spas and clinics. The word “cryotherapy” covers very different treatments, though. This guide separates them, shows what research supports, and lists the risks.
Three Treatments Called Cryotherapy
Many pages mix these up. That confusion is why so many cryotherapy weight loss claims sound convincing.
| Treatment | What it is | Evidence for weight loss |
|---|---|---|
| Whole body cryotherapy (WBC) | Standing in a very cold chamber for a few minutes | No controlled trial reviewed for this page shows fat loss; no device is FDA approved or cleared for medical treatment |
| Mild cold exposure | Hours at cool room temperature, or cold water | Small rise in energy use in trials |
| Cryolipolysis (CoolSculpting) | Cooling pads that freeze a pocket of fat | Reduces local fat; not a weight loss method |
| Cryosurgery | Liquid nitrogen to remove abnormal tissue | Medical procedure; unrelated to weight loss |
Does Cryotherapy Weight Loss Work?
Claims that a three-minute session burns 600 to 800 calories do not hold up. That figure would exceed an hour of brisk exercise for most people. I found no controlled trial that supports it.
The best data comes from a 2022 meta-analysis of 10 randomized trials. It compared mild cold (16 to 19 C, or about 61 to 66 F) with a 24 C room (75 F). Energy expenditure rose by about 188 kcal per day on average. Brown fat activity also increased.
That result is real, but it has limits. The cold was mild and sustained, not a short blast in a chamber. Also, the extra energy use is small. It does not show that cold chambers reduce body fat.
How Whole Body Cryotherapy Works and What the FDA Says
In a typical session, a person stands in a chamber for a few minutes. The head usually stays outside, and staff supply gloves, socks and slippers. Providers often cool the room air or use nitrogen vapor.
The FDA issued a consumer warning in 2016. It said no whole body cryotherapy device has been approved or cleared for medical treatment of any condition. It also said claimed benefits have little support. Its listed risks include asphyxiation from nitrogen vapor, frostbite, burns and eye injury.
In short, a spa can offer the service, but that does not mean a regulator has judged it effective. Ask any provider for their safety procedures in writing.
CoolSculpting vs Cryotherapy for Fat Loss
CoolSculpting is cryolipolysis. Applicators cool a small area of fat, and the treated fat cells die and clear over weeks. The first FDA clearance covered the flanks, often called love handles. The maker reported about 20% fat reduction in the treated area, with results building over two to four months.
Even so, it targets stubborn pockets in people near a stable weight. It is not designed to lower the number on the scale. Its figures also come from the manufacturer, so treat them as company claims.
Other Claimed Benefits: What Holds Up
| Claim | Where it stands |
|---|---|
| A short session burns 600 to 800 calories | Not supported |
| A session burns more than an hour of running | Not supported |
| Chambers melt body fat | Not supported in controlled trials reviewed |
| Mild cold raises daily energy use | Supported, modestly (about 188 kcal per day in one meta-analysis) |
| WBC is a proven, FDA-recommended technique | Not supported: no device is approved or cleared for medical treatment |
| Speeds muscle recovery | Overstated: a review of 10 studies found weak evidence for sports injuries |
| Cures arthritis, migraine, depression or skin disease | Not supported; do not replace prescribed care with it |
| Prevents cancer, dementia or diabetes | Not supported |
| Cryolipolysis shrinks fat in treated areas | Supported for local fat; not a weight loss tool |
Safety Before You Try Cryotherapy Weight Loss
- Talk to a doctor first if you have heart disease, high blood pressure, circulation problems or cold sensitivity.
- Skip it if you are pregnant unless your doctor says otherwise. Children should not take part.
- Cover skin properly. Frostbite and burns are documented risks, so follow the staff’s clothing rules.
- Check the ventilation. Chambers that use nitrogen carry a risk of low oxygen.
- Do not drop proven care. Never stop prescribed medicine or skip treatment for cryotherapy.
Cryolipolysis has its own risks, such as temporary numbness, redness and bruising. Ask a licensed clinician about them.
What to Do Instead for Fat Loss
Habits still do the heavy lifting. Our guides on the science of fat burning and counting calories explain what works. If you are considering a clinical option, read about medical weight loss and talk to your doctor.
Cryotherapy Weight Loss FAQ
Not in any proven way. No controlled trial reviewed here shows that cold chambers reduce body fat. Mild cold exposure raises energy use slightly, but that is not the same as a chamber session.
No reliable figure exists for a chamber session. One meta-analysis found mild cold (16 to 19 C) raised energy use by about 188 kcal per day versus a 24 C room. Claims of 600 to 800 calories in minutes are not supported.
No. The FDA has said no whole body cryotherapy device is approved or cleared for medical treatment of any condition, and it warned consumers about misleading claims.
No. CoolSculpting is cryolipolysis, which cools a small area of fat with an applicator. Whole body cryotherapy cools the whole body in a chamber. The first is cleared for local fat reduction; the second is not cleared for medical treatment.
It is meant to reduce fat in treated areas, not to lower body weight. The maker reported about 20 percent fat reduction in the treated area. It suits people already near a stable weight.
The FDA lists asphyxiation from nitrogen vapor, frostbite, burns and eye injury. Talk to a doctor first if you have heart or circulation problems.
People who are pregnant, children, and anyone with heart disease, high blood pressure or cold sensitivity should speak to a doctor before trying it. Most should skip it without medical advice.
There is no solid evidence that it does. A review of 10 studies found weak support even for sports injuries. Do not replace prescribed treatment with cryotherapy.
Related Reading
- The science behind fat burning
- Guide to counting calories for weight loss
- Ways to lose weight without an app
- Medical weight loss benefits
Sources
- MinnPost, FDA issues consumer warning about whole body cryotherapy (2016, reporting the FDA warning)
- Frontiers in Physiology (2022), acute cold exposure and brown adipose tissue: systematic review and meta-analysis
- Plastic Surgery Practice, cryolipolysis treatment cleared by FDA (manufacturer figures)
This page is general information, not medical advice. Speak to your doctor before any cold-exposure or fat-reduction treatment. Last reviewed and rewritten October 2026.
