Can sickle cell anemia be developed over time?

No: You are born with it. You cannot develop it. Hope this helps.

No: Sickle cell disease occurs when you inherit sickle genes from both parents. The parents are usually unaffected because they have at least one normal gene that does the work for two. When you have 2 defective genes, the work is not done and you have sickle cell disease. You don't catch it like a germ or develop it as a reaction to something.