Obesity is associated with lower vitamin D concentrations than normal-weight. Pregnancy may affect vitamin D status, especially in obese subjects.
The purpose of this study was to compare vitamin D status and intake between obese and normal-weight women during pregnancy.
Twenty-five obese and 80 normal-weight women were recruited in the Western Sweden region (latitude 57°N). Blood samples and information on diet and sun exposure were collected in each trimester during pregnancy.
During summer months, 12% of normal-weight and 50% of obese women in the first trimester had serum 25(OH)D concentrations