In the case of non-anemic pregnant women in Mexico,
high dose of iron-supplementation (60 mg/day) was related
to high rates of hemoconcentration (Hb > 145 g/L),
which was further associated with a relatively high risk
of low birth weight and premature delivery [43]. However,
a low dose of iron supplement (30 mg/d) was significantly
associated with a higher mean birth weight, a
lower incidence of low-birth-weight infants and lower
incidence of preterm low-birth-weight infants in 513
iron-replete non-anemic pregnant women in the U.S.
Daily supplementation [44]. Therefore, a low dose of
iron supplements (30 mg/d or 120 mg/wk) may be more
beneficial for fetal growth than a high dose of iron and
proper advice about iron supplementation should be
provided by a nutritionist or health professionals to prevent
excessive iron intake by pregnant women