Best Man Donates To Bride(01 of21)
Open Image ModalJustin Bieber Tweets To Donors(02 of21)
Open Image ModalA Craigslist Donor(03 of21)
Open Image ModalDaughter Saves Mum's Life(04 of21)
Open Image ModalChrista Taylor Green Lives On(05 of21)
Open Image ModalWoman Gives Kidney To Brother(06 of21)
Open Image ModalOne Child Saves Another (07 of21)
Open Image ModalStranger Donates Kidney(08 of21)
Open Image Modal(09 of21)
Open Image ModalNEXT: Sisters Get Lunch Transplants From Same Donor
Anna Williamson, Irma Myers-Santana(10 of21)
Open Image ModalIn this Jan. 14, 2014 photo, Irma Myers-Santana, left, and her sister Anna Williamson visit in Williamson's hospital room in Houston. Earlier this month the sisters ended up in the same operating room, each getting one lung from the same donor. (AP Photo/Pat Sullivan) (credit:AP)
Anna Williamson, Irma Myers-Santana, Matthias Loebe, Scott Scheinin(11 of21)
Open Image ModalIn this Jan. 14, 2014 photo, Anna Williamson, left, clowns around with her surgeon Dr. Matthias Loebe, second from left, as her sister Irma Myers-Santana, right, visits with her surgeon Dr. Scott Scheinin, second from right, in a hospital room in Houston. Earlier this month the sisters ended up in the same operating room, each getting one lung from the same donor. (AP Photo/Pat Sullivan) (credit:AP)
Anna Williamson, Irma Myers-Santana(12 of21)
Open Image ModalIn this Jan. 14, 2014 photo. Irma Myers-Santana, left, and her sister Anna Williamson, right, sing a song as Kim Pappas films them with her cell phone in Houston. Earlier this month the sisters ended up in the same operating room, each getting one lung from the same donor. (AP Photo/Pat Sullivan) (credit:AP)
Anna Williamson, Irma Myers-Santana(13 of21)
Open Image ModalIn this Jan. 14, 2014 photo, Irma Myers-Santana, left, and her sister Anna Williamson visit in Williamson's hospital room in Houston. Earlier this month the sisters ended up in the same operating room, each getting one lung from the same donor. (AP Photo/Pat Sullivan) (credit:AP)
Kim Pappas, Irma Myers-Santans, Anna Williamson(14 of21)
Open Image ModalIn this Jan. 14, 2014 photo, Anna Williamson, right, looks on as her daughter Kim Pappas, center, checks her Aunt Irma Myers-Santana's makeup before a video interview Tuesday in Houston. The two sisters shared an operating room as they each received a lung from the same donor earlier in the month. (AP Photo/Pat Sullivan) (credit:AP)
(15 of21)
Open Image ModalNEXT: How To Share Your Health
(16 of21)
Open Image Modal(17 of21)
Open Image Modal(18 of21)
Open Image Modal(19 of21)
Open Image Modal(20 of21)
Open Image ModalMake sure to fill out your organ donation cards and inform your family of your wishes. Many provinces include the organ donation card when you receive a driver's license.
(21 of21)
Open Image ModalKeep up-to-date on the changing rules and regulations around donating blood. And know your type: At 39 per cent, Canada's most common blood type is O+; at less than 1 per cent, the least common blood type is AB-.