The penetration of radon into the bloodstream is negligible and the biological half-life (elimination of radon from the body) is 20 minutes.

How do radon baths affect the human body?
Therapy is the art of using a drug in optimal quality and quantity. The quality of radon is soft alpha radiation, the quantity is the strength of the Jáchymov springs and the centuries-proven dosage of radon baths. Their treatment range is 10 to 24 baths with an intensity of 4.5 – 5.5 kBq, for 20 minutes. The absorbed energy stimulates tissue regeneration and the elimination of harmful oxidative stressors (mostly free radicals from chemicals, processed foods and the environment). The production of hormones, including pain-relieving, anti-inflammatory, and sex hormones, increases. All components of the immune system are activated. These processes are started during the treatment stay and continue for about 4-6 weeks after the last radon bath.