Dopamine and cold water!
Dopamine is a neurotransmitter often referred to as the "feel-good" chemical because it plays a crucial role in pleasure, motivation, memory, and drive. Essentially, dopamine motivates us to repeat certain behaviors by rewarding us with feelings of satisfaction or pleasure—whether these behaviors are healthy (running!) or harmful (3 day cocaine benders). When dopamine production in the brain becomes imbalanced or insufficient, people often experience feelings of fatigue, low motivation, mood swings, and even depression.
Posted on Tue 5 Aug 2025
This imbalance can result in unstable dopamine levels, causing significant fluctuations throughout the day. Consequently, the brain may seek dopamine through external sources such as sugar, smartphone use, tobacco, or other addictive substances and behaviors.
One interesting method that may help stabilise dopamine levels naturally is cold water immersion (CWI), which involves exposing oneself briefly to cold water, typically around 14°C or colder.
When the body experiences this cold shock, dopamine levels in the brain surge dramatically—by up to 250% above normal.
Notably, this elevated dopamine level remains sustained for about 3-4 hours, providing a prolonged feeling of wellbeing and motivation, similar to the dopamine response from substances such as sugar, tobacco, or even cocaine, but without the subsequent crash (and other negative impacts!!!) typically experienced with those substances.
Beyond dopamine, cold water immersion also prompts the release of other neurotransmitters like norepinephrine and endorphins, which further help in mood regulation, stress reduction, and resilience building. Importantly, the rapid triggering of the body's fight-or-flight response through cold exposure provides immediate physiological and psychological benefits, often more quickly and effectively than heat-based therapies such as saunas.
Scientific research supports the idea that regular cold water immersion can significantly elevate dopamine levels to a degree comparable with substances like tobacco and cocaine, minus the harmful after-effects and crashes.
Additionally, (VERY IMPORTANT!!!! ) consistent exposure to cold water may enhance dopamine sensitivity, potentially reducing the need for extreme stimuli to achieve satisfaction.
While cold water immersion has promising benefits, it's essential to approach this practice cautiously and gradually to ensure safety and minimise risks- read this blog for more tips.
References (for further reading):
Huberman Lab – The Science of Cold Exposure
Telegraph.co.uk – Mental Health and Cold Swimming
Time.com – Healthier Dopamine Highs
Cassiobury Court – Cold Water Therapy for Addiction
Psychology Today – Ice Baths for Mental Health
FoundMyFitness.com – Cold Exposure Therapy
PubMed Central – Dopamine and Cold Exposure Studies