Figure 1: High percentage of sperm cell DNA damage in subjects addicted to Cannabis smoke: Acridine orange stain to native DNA green (1) and to damage DNA red (2) (under Epifluorescence microscope, 40x). Percentage of damaged and undamaged sperm cell DNA in A. the non-smokers B. in tobacco smoke addicted subjects and C. in the cannabis smoke addicted subjects. D. A graphical representation of percentage of sperm DNA damage in three different groups showing the highest of DNA damage in the cannabis smoke addicted group. Scale bar=50 μm.