Salam

Dear Dr Eman El-Abd

To my knowledge, there is no study has been done to investigate this radioactive and toxic gas on spermatozoa.

By the way, my opinion, as this gas is  radioactive and very toxic, will affect the sperm DNA, acrosome, and ultra structure of the sperm  more than the motility. 

Regards

Hi Dr Eman

Possible Genetic Damage with radon

Ionizing radiation causes random damage to the chromosomes and DNA molecules contained in the nucleus of the cell, including genetic mutations that may affect future generations. Substances having a carcinogenic effect also have genetic and teratogenic effects. Damage to the DNA of reproductive cell, e.g. gamma irradiation of sperm, can lead to genetic deficiencies in the offspring, and if an embryonic cell is damaged, the normal development of the fetus can be disrupted.

In areas of high natural background radiation, an increased frequency of chromosome aberrations has been observed. "Any individual dose, however small, is able to produce gross malignancies and deformities if it is administered to a sufficiently large population." 

(Source: Dr. Gordon Edwards)

Cheers

Houshang

Thanks