Negative aspects of euphenics
Deterioration of gene pool
Abuses in the medical application of genetics
Abuse of gene therapy
As medical science is able to apply medical and surgical treatments to genetic diseases - successful treatment also removes barriers of reproduction - the frequency of each malfunctioning gene concerned will increase in subsequent generations. Also a probability of producing genotypes with multiple disorders, [eg] someone with haemophilia and sickle-cell anaemia, increases progressively.