“cold showers are bad”

CardiovascularStressCold TherapyMental Health

3/5 evidence score7 peer-reviewed studies

Educational, not medical advice. Always consult a qualified healthcare provider before changing your diet, supplements, or routine. Full disclaimer.

What the science says

Cold water immersion, including cold showers, carries documented risks such as cold shock, cardiac arrest, and hypothermia, particularly for individuals unfamiliar with the practice or those with underlying health conditions. However, it also offers potential benefits for muscle recovery and treating hyperthermia, indicating that its effects are context-dependent.

Full analysis

While cold water immersion can be beneficial for post-exercise recovery or treating hyperthermia, the evidence highlights several risks. These include the immediate cold shock response, which can precipitate cardiac arrest, and the risk of hypothermia, particularly with prolonged exposure or in individuals with low body mass index. Furthermore, cold stress can negatively impact physical performance and, in animal models, has been linked to increased anxiety and depression-like behaviors. The overall impact of cold showers is highly dependent on individual health, acclimatization, and the specific context of exposure.

Key studies

Cold water immersion: kill or cure?

Tipton MJ et al. · Experimental physiology · 2017

This review identifies cold water immersion as both a hazard and a treatment, noting it can be a precursor to drowning, cardiac arrest, and hypothermia depending on circumstances.

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Cold Water Swimming-Benefits and Risks: A Narrative Review.

Knechtle B et al. · International journal of environmental research and public health · 2020

While cold water swimming by experienced individuals may offer health benefits, there is a risk of death in unfamiliar people due to initial neurogenic cold shock response or hypothermia.

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Cold Stress Effects on Exposure Tolerance and Exercise Performance.

Castellani JW et al. · Comprehensive Physiology · 2015

Cold weather and water exposure can have deleterious effects on health, tolerance, and physical performance, including degradation of aerobic performance, strength, and power.

View paper

“cold showers are bad”

What the science says

Full analysis

Key studies

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