QED on your own definition of racism, which I utterly refute. For something to be racist it must have a racial element of condescension, hatred or contempt.Sickle cell anaema is an affliction that is mainly confined to the afro-caribbean race.
I believe the condition may be genetically tied to melanin content in the body
(which is why the condition is so rare in other racial groups - caucasian etc) .
This is a notion based on race. Therefore "racism" .
No malign outcome occurs from this notion. Therefore "totally benign" .
QED (on many levels) .