Abbas Di Palma, Shaykh Abbas Di Palma holds a BA and an MA degree in Islamic Studies, and certifications from the Language Institute of Damascus University. He has also studied traditional Islamic sciences in... Answer updated 1 year ago

as salam alaikum

it may be true in some cases but we cannot generalize for all people and all illnesses. For example books of history tells us that Abu Lahab got very ill during his last stages of life and it was not for wiping out his sin.

With prayers for your success.