Foods to help prevent constipation during pregnancy

Pregnancy hormones can slow movement through the bowel, while iron supplements, reduced activity, nausea, or pressure from the growing uterus may add to the problem. Fibre holds water in stool and adds bulk, which can make bowel movements easier. Good sources include oats, wholegrain bread, brown rice, beans, lentils, vegetables, fruit, and nuts. Prunes or prune juice may help some people, but tolerance differs.

Constipation means stools are hard, difficult to pass, or less frequent than usual. It is a symptom, and it does not by itself identify a separate condition. Read more about [Constipation](/symptoms/constipation/).

Add one fibre-rich food to each meal and make changes over several days rather than suddenly eating large amounts. Sip water through the day, unless your maternity team has advised fluid restriction. Gentle walking, if permitted in your pregnancy, can also encourage bowel movement. Do not stop prescribed iron or start a laxative, herbal product, or fibre supplement without checking with your midwife, obstetrician, or pharmacist. A nutrition counsellor can help adapt choices if nausea, diabetes, or food intolerance affects your diet.

Seek prompt medical advice for severe or worsening abdominal pain, repeated vomiting, a swollen abdomen, inability to pass gas, blood in the stool, fever, or faintness. Contact your maternity team if constipation continues despite dietary changes or if an iron supplement seems to be causing it; they can review the dose or formulation safely. Reduced urination, very dark urine, or marked thirst can occur with [Dehydration](/conditions/dehydration/).

Could my iron supplement be contributing to constipation? Is a fibre supplement or stool softener suitable for me? How much fluid is appropriate with my pregnancy and medical history? Could symptoms suggest [Hypothyroidism](/conditions/hypothyroidism/) or [Irritable Bowel Syndrome](/conditions/irritable-bowel-syndrome/)?