rehabilitate
/ˌriːjəˈbɪləˌteɪt/
verb
-tates; -tated; -tating
to bring (someone or something) back to a normal, healthy condition after an illness, injury, drug problem, etc. [+ obj]
[+ obj] :to teach (a criminal in prison) to live a normal and productive life
[+ obj] :to bring (someone or something) back to a good condition :restore