A 1990 study investigated violent behavior among severely mentally ill individuals in 1,401 randomly selected families who were members of the National Alliance for the Mentally Ill (NAMI). In the preceding year, 11 percent of these individuals were reported to have physically harmed another person.
You can donate after you have finished a course of oral antibiotics for a bacterial or viral infection as long as you have taken the last pill as of the date of donation. If you received an antibiotic by injection, you can donate as long as it has been 10 days since your last injection.
Giving whole blood requires a waiting period of 56 days between donations; however, all we ask is for individuals to Commit for Life and donate once every quarter. If you donate plasma (your red cells are returned to you), you may donate every 28 days. If you donate platelets (your red cells and most of your plasma are returned to you), you may donate every seven days, with a maximum of 24 times per year.