Pregnant women may be at risk of developing tooth decay if they snack frequently on sugary foods and drink. Cakes, sweets, chocolate, biscuits and sugary drinks are all high in sugar and sugar is also 'hidden' in other foods. Pregnant women should be encouraged to choose healthy options and to avoid or keep sugary snacks and drinks to meal times, when they are less damaging to teeth.
Many foods that contain added sugars are also high in energy, which is measured in either kilojoules (kJ) or calories (kcal). Eating these foods often can contribute to you becoming overweight, even during pregnancy.
Further information can be found on the NHS Choices website.