Estimating bone mineral by the photon absorption (125I) method applied
to the distal part of the radius, it was found that young women using oral
contraceptives containing a daily dose of 100 micrograms of mestranol had
higher concentrations of bone mineral than non-users. Women twenty to
fifty-nine years old who had lactated were among the poorly mineralized,
while those who had lactated but were now using oral contraceptives in
various combinations were among the highly mineralized.