If you have sex with someone who has sickle cell can you get it?

No: Sickle cell disease is an inherited disorder, not an acquired condition. It is not contagious, and your partner will not contract this disorder through sex. If you are referring to the heritability of sickle cell disease, yes the offspring of a coupling between two people with sickle cell disease or trait can have sickle cell disease. Ss x ss =100%, ss x sb = 50%, sb x sb =25%, ss x bb = all trait.

Not contageous: Sickle cell disease is caused by a problem with hemoglobin (the stuff inside red blood cells) production. It is a genetic problem, which means that it is caused by mutations in the gene that directs the production of beta globin. You cannot catch it from someone.