Can Cryotherapy Help Me Lose Weight?

Curated by Claudia Shannon / Research Scientist / ishonest

The popular whole-body cryotherapy method has you stand in a chamber that covers all parts of your body except your head. The air in the chamber goes down to temperatures as low as negative 200°F to 300°F for up to 5 minutes.

Cryotherapy has become popular because of its ability to treat painful and chronic conditions like migraine and rheumatoid arthritis. And it’s also been thought to be a possible weight loss treatment.

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But does cryotherapy for weight loss really have any science behind it? The short answer is probably not.

Let’s discuss the purported benefits of cryotherapy for weight loss, whether you can expect any side effects, and how it stacks up against CoolSculpting.

Purported benefits of cryotherapy for weight loss

The theory behind cryotherapy is that it freezes fat cells throughout the body and kills them off. This causes them to be filtered out of the body by your liver and permanently removed from areas of fat tissue.

A 2013 study in the Journal of Clinical Investigation found that daily exposure to cold temperatures (62.5°F or 17°C) for 2 hours a day over 6 weeks reduced total body fat by about 2 percent.

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This is because a substance in your body called brown adipose tissue (BAT) burns fat to help make energy when your body is exposed to extreme cold.

This suggests that the body may have mechanisms for reducing fat due to cold temperatures.

A 2014 study in Diabetes exposed participants to increasingly cold temperatures and then increasingly warmer temperatures every night for 4 months. The study started at 75°F (23.9°C) down to 66.2°F (19°C) and back up to 81°F (27.2°C) by the end of the 4-month period.

The researchers found that exposure to progressively cooler then warmer temperature can make your BAT more responsive to these temperature changes and help your body become better at processing glucose.

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This isn’t necessarily linked to weight loss. But increased sugar metabolism can help you lose weight over time by helping your body better digest sugars that can otherwise turn into body fat.

Other research also supports the idea that cryotherapy works best when it’s combined with other strategies for weight loss — like exercise.

A 2014 study in Oxidative Medicine and Cellular Longevity followed 16 kayakers on the Polish National Team who did whole-body cryotherapy at -184°F (-120°C) down to -229°F (-145°C) for about 3 minutes a day for 10 days.

Researchers found that cryotherapy helped the body recover more quickly from exercise and reduce the effects of reactive oxygen species (ROS) that can cause inflammation and weight gain over time.

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This means that cryotherapy can allow you to exercise more often due to a faster recovery time and experience fewer negative effects of stress and weight gain.

And here are some other recent highlights from research on cryotherapy for weight loss:

  • A 2016 study in the British Journal of Sports Medicine found that 3 minutes of exposure to temperatures of -166°F (-110°C) 10 times in a 5-day period had no statistically significant effect on weight loss in men.
  • A 2018 study in the Journal of Obesity found that long-term cryotherapy activates a process in the body called cold-induced thermogenesis. This led to an overall loss of body mass particularly around the waist by an average of 3 percent.

Cryotherapy for weight loss side effects

Cryotherapy has been found to have some side effects that you may want to consider before you attempt to try it for weight loss.

Nerve side effects

Extreme cold on the skin can lead to a number of nerve-related side effects, including:

  • numbness
  • tingling sensation
  • redness
  • skin irritation
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These are typically temporary, lasting only a few hours after the procedure. See a doctor if they haven’t gone away after more than 24 hours.

Long-term use

Don’t do cryotherapy longer than recommended by a doctor, as long-term cold exposure can cause permanent nerve damage or the death of skin tissue (necrosis).

Whole-body cryotherapy done at below-freezing temperatures should never be done for more than 5 minutes at a time, and should be supervised by a trained provider.

If you’re trying cryotherapy at home with an ice pack or a tub filled with ice, cover the ice pack with a towel to avoid freezer burns. And don’t do an ice bath for longer than 20 minutes.

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Don’t do cryotherapy if you have diabetes or similar conditions that has damaged your nerves. You may not be able to feel the cold on your skin, which can lead to more nerve damage and tissue death.

Cryotherapy vs. CoolSculpting

CoolSculpting works by using a method called cryolipolysis — basically, by freezing fat off.

CoolSculpting is done by inserting a small section of your body fat into an electronic tool that applies extremely cold temperatures to that section of fat to kill the fat cells.

A single CoolSculpting treatment takes about an hour for a section of fat. Over time, the fat layer and “cellulite” that you can see under your skin are reduced. This is because the frozen fat cells are killed and then filtered out of your body through your liver a few weeks after you start treatment.

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CoolSculpting is still a relatively new procedure. But a 2014 review of research found that cryolipolysis could lower the amount of fat in treated areas by up to 25 percent after one treatment.

CoolSculpting works best when it’s combined with another weight loss strategy, such as portion control or exercise. But when done regularly alongside these lifestyle changes, CoolSculpting can permanently remove areas of fat on your body.

Takeaway

Cryotherapy has been linked to some health benefits, but few of them are related to weight loss. The possible side effects of cryotherapy may outweigh the largely unproven benefits of weight loss.

The Food and Drug Administration (FDA) has also warned of the lack of evidence for this procedure and possible complications that can arise.

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Talk to a doctor before you decide to try cryotherapy or related treatments like CoolSculpting. It can be expensive and time-consuming, and may not be worth it if changes to your diet and lifestyle will help you with weight loss more effectively.

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