Gestational diabetes mellitus (GDM) is a condition in which high blood sugar levels occur during pregnancy. GDM increases the risk of medical complications during pregnancy which may harm the mother and her baby. Since treating GDM to reduce blood sugar reduces the risk of harm, all pregnant women are screened for GDM using a glucose challenge test (GCT). We think that a diet containing low glycemic index foods could help keep blood sugar levels normal during pregnancy and therefore prevent GDM. Thus, the purpose of this study is to see if a diet containing low glycemic index foods will reduced blood sugar after the GCT and reduce the prevalence of GDM in women at high risk for the development of GDM.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
103
Group nutrition classes supplemented by handouts and provision of key study foods.
Mt Sinai Hospital
Toronto, Ontario, Canada
Serum glucose concentration 1hr after glucose challenge test
Time frame: 26 weeks gestation
GCT outcome
ie. normal, borderline, abnormal
Time frame: 26 weeks gestation
GDM outcome
Presence or absence of gestational diabetes
Time frame: 26 weeks gestation
Maternal weight
Time frame: At EACH of the following times: 12, 16, 20, 24, 28, 32, 36 and 40 weeks gestation
Mode of delivery
Normal or cesarean section
Time frame: At time of birth of baby
Presence of birth trauma
Time frame: At time of birth of baby
Weight of baby
Time frame: At time of birth of baby
Presence of macrosomia
Time frame: At time of birth of baby
presence of large for gestational age baby
Time frame: At time of birth of baby
Presence of small for gestational age baby
Time frame: At time of birth of baby
food frequency questionnaire
Time frame: at 12 weeks and 26 weeks gestation
Acceptability of study foods
Time frame: 26 weeks gestation
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