I have'nt been able to give blood.I'm 21 and when I was in highschool,the blood donation worker would go to our school and ask the students if they wanted to give blood.I never could because I had tattoos.It was my decision to get the tattoos done first and not thinking of the negative parts of blood donation.Well it's been awhile and I believe now I can donate blood.I want to see if im healthy.I would love some information about blood donation.Also another thing is if tattoos can hurt a mans genitalia.Or lower sperm count.Give me information.thankyou.