How common is constipation in hypothyroidism?

Thyroid hormones influence many body processes, including the muscular contractions that move stool through the intestine. When thyroid activity is low, bowel movements may become less frequent or harder to pass. Constipation may occur alongside tiredness, feeling unusually cold, dry skin, or changes in weight, but symptoms vary between people.

Having constipation does not establish the cause. Medicines, low fluid intake, limited activity, changes in diet, and bowel conditions can also contribute. A clinician may review your symptoms and arrange thyroid blood tests when hypothyroidism is a possibility.

Keep a regular toilet routine and allow enough time without straining. Drink fluids regularly, add fibre gradually through foods such as vegetables, fruit, beans, and whole grains, and stay physically active if you are able. A sudden large increase in fibre can cause bloating, so build up slowly.

If hypothyroidism has been diagnosed, take thyroid medicine exactly as prescribed and discuss continuing constipation with your clinician. Do not change the dose or start frequent laxative use without advice; the suitable option depends on your health, medicines, and the pattern of your bowel symptoms.

Arrange a medical review if constipation is persistent, keeps returning, or begins with other possible thyroid symptoms. Seek urgent care for severe or worsening abdominal pain, repeated vomiting, a swollen abdomen, inability to pass stool or gas, or blood in the stool. These features need assessment because they may point to a problem beyond slow bowel movement.

Ask whether your symptoms fit hypothyroidism, whether thyroid testing is appropriate, and whether any current medicine could be slowing your bowel. You can also ask how to increase fibre safely and which short-term constipation treatment would suit you.