The effects of parental consanguinity on gestational age and birth mea
surements were evaluated on 2880 newborn infants. Consanguineous marri
ages were considered in three subgroups: first-cousin, first-cousin-on
ce-removed and distant-cousin marriages, versus non-consanguineous mar
riages. Anthropometric parameters were weight, length, leg length, hea
d, chest and mid-arm values obtained within 24 h of birth. No signific
ant differences were found concerning gestational age. Although anthro
pometric values were slightly less, especially in children from first-
cousin couples, the differences were insignificant for all groups. It
was concluded that blood-relationship alone does not affect such multi
factorial traits.