Defiant Health Radio with Dr. William Davis

Cold Water Immersion: Cardiac Russian Roulette

4 snips
Apr 2, 2025
Cold water immersion is gaining traction for its touted benefits, but it's not without peril. The plunge can trigger dangerous heart conditions like coronary spasms, especially in those with endothelial dysfunction. The concept of 'autonomic conflict' complicates matters further, as both nervous system branches engage simultaneously. Litigation is on the rise due to sudden cardiac incidents linked to this practice. Safer alternatives, such as progressive cold showering, are recommended for those seeking similar benefits without the associated risks.
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INSIGHT

Effects of Cold Water Immersion

  • Cold water immersion can slightly improve mood and reduce muscle soreness after exercise.
  • It causes a rise in heart rate and blood pressure but has mixed effects on aerobic performance.
INSIGHT

Coronary Spasm Risks

  • Cold water exposure triggers coronary artery spasms causing heart attacks and sudden cardiac death.
  • Coronary arteries are very cold sensitive and spasm within seconds to minutes of cold exposure.
INSIGHT

Endothelial Dysfunction Explained

  • Endothelial dysfunction makes arteries prone to spasm and is common in most adults.
  • It is caused by factors like high blood pressure, high blood sugar, poor diet, and lack of certain nutrients.
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