Most white genetic diseases and ailments (the ones mostly white people receive) stem from Neanderthal DNA.
Bingo.
The only obvious disease we have is Sickle Cell but that's an adaptation to deal with malaria and other tropical diseases.
Everything else where they say "blacks are more likely to have XYZ" comes from stress, poverty, unequal treatment in the healthcare system etc. An African with decent money.....what genetic diseases are they getting if they live a healthy lifestyle? Can't think of too many.
Notice how white people have spent the last 500+ years trying to convince everyone they are better. Then as soon as their birthrate starts falling, they start trying to claim Jews, Asians, Mexicans...and everything else.