Recent advances in tests for the genotype for hemochromatosis and sugg
estions that the tests be used in mass screening programs for the dise
ase raise the possibility of a large increase in the incidence of disc
rimination against people who are found to be homozygous for hemochrom
atosis. This paper presents cases of genetic discrimination drawn from
a study of discrimination against people with a variety of genetic co
nditions. The cases discussed here involve employment and several type
s of insurance discrimination against people diagnosed with hemochroma
tosis who either are currently asymptomatic or whose condition is cont
rolled by means of phlebotomies. There is no justification for these t
ypes of discrimination since people with controlled hemochromatosis su
ffer no excess mortality or morbidity. Our study suggests that genetic
discrimination is already a serious problem and that any proposed scr
eening program for hemochromatosis or other genetic condition must con
sider and attempt to mitigate its effects.