Okay, on blood donation.
From the American Red Cross:
http://www.redcross.org/services/bio...0_557_,00.html
"Chronic Illnesses
Most chronic illnesses are acceptable as long as you feel well, the condition is under good control, you have an adequate hemoglobin level and your temperature is normal when you come to donate, and you meet all other eligibility requirements."
Please do visit this link, there is a long list of conditions and circumstances that each individual should review before donating (or attempting to donate) their blood. It's our responsibility to know what is and is not acceptable.
Did you know that you should NOT donate blood within a year of getting a new tattoo?