A healthy varied diet is recommended in pregnancy including plenty of fruit, vegetables, carbohydrates, protein and dairy.You do not need to eat for two, but you may need to have regular healthy snacks as your body works to support the growing baby. There are some foods that you should avoid during pregnancy because they could make you unwell or harm your baby. Guidance around which foods to avoid can change as new evidence or research is found.Ask your midwife, or check on the related links below. Normal weight gain in pregnancy is between 10-12.5kg (22-28lb). Calculate your BMI (Body Mass Index) with the BMI calculator below, using your pre-pregnancy weight. If you start your pregnancy with a high BMI (more than 35) or low BMI (18 or less) your midwife or GP may give you special dietary advice about weight gain or loss.