Weight and Haemorrhoids: Does Being Overweight Cause Piles?

Weight and Haemorrhoids: Does Being Overweight Cause Piles?

Is There a Link Between Weight and Haemorrhoids?

Yes, but it is not a simple cause and effect. Studies of large groups of people have found that those who are overweight or obese are somewhat more likely to report haemorrhoids than those of a healthy weight. That does not mean that extra weight causes piles in every case, and plenty of slim people have them. Weight is best thought of as one of several factors that can raise your risk, alongside straining, constipation, long periods of sitting, pregnancy and age.

How Extra Weight Could Contribute

Carrying weight around the abdomen increases the pressure inside the abdominal cavity, and that pressure is passed on to the veins and cushions of tissue around the anus. Over time this may make them swell and stretch more easily. Weight can also affect habits that matter for piles. People with a higher body weight tend to sit for longer, move less and eat fewer high-fibre foods on average, all of which make constipation more likely; our guide on constipation and haemorrhoids explains why harder stools lead to more straining. None of this is a personal failing, and it is worth remembering that the evidence shows an association, not proof that weight is the reason for your symptoms.

Where the Weight Sits Matters

Fat stored around the middle, sometimes called central or abdominal obesity, is the type most often linked to pressure-related problems such as hernias and reflux. It is plausible that it also plays a part in piles, although research on haemorrhoids specifically is limited. Waist size is therefore a more useful guide than the number on the scales alone. If your waist measures more than about 94 cm for men or 80 cm for women, the NHS suggests that you may benefit from losing weight, for several health reasons that go well beyond piles.

Can Losing Weight Get Rid of Haemorrhoids?

Losing weight can reduce pressure and often goes hand in hand with healthier eating and more activity, so it may help to prevent flare-ups and reduce symptoms. What it cannot do is reliably shrink haemorrhoids that are already enlarged or prolapsed. Once the supporting tissue has stretched, it tends not to tighten up again by itself. Our article on how to shrink haemorrhoids explains what does help in the short term, and why lasting changes usually need a proper assessment.

Losing Weight Without Making Piles Worse

How you lose weight matters. Very low-calorie or low-carbohydrate diets that cut fibre can cause constipation, which is exactly what you want to avoid; aim for around 30 g of fibre a day from vegetables, pulses, fruit and wholegrains, and increase it gradually while drinking plenty of fluid. Crash diets and some weight-loss medicines can cause diarrhoea or constipation, so tell your doctor if your bowels change. Our guide on foods to avoid with haemorrhoids covers which foods are worth watching.

Exercise: Helpful, with a Few Cautions

Regular moderate activity such as walking, swimming or cycling for around 150 minutes a week helps weight, bowel movement and circulation. Very heavy lifting with a held breath raises pressure in the abdomen and can aggravate symptoms, so if you are starting a gym programme build up gently. Our article on exercise and haemorrhoids sets out which activities are generally comfortable, and our guide on cycling and piles covers saddle pressure.

Sitting, Habits and the Toilet

Whatever your weight, habits on the toilet make a difference. Go when you feel the urge, do not strain, and avoid spending ages on the seat with a phone. If your job or lifestyle involves a lot of sitting, take short walks regularly; our article on sitting all day and haemorrhoids has practical tips. Our guide on straining on the toilet explains why straining is the single most important thing to reduce.

When Weight Is Not the Explanation

It is easy to put every symptom down to weight, but bleeding or a change in bowel habit should never be assumed to be piles without being checked. If you notice blood, persistent looseness or constipation, unexplained weight loss, or a lump that does not behave like a haemorrhoid, see a doctor. Our articles on haemorrhoids or bowel cancer and on lumps near the anus explain which signs need attention. Unintentional weight loss, in particular, together with bowel symptoms, should always be reported.

Treatment Does Not Have to Wait for Weight Loss

Some people are told to lose weight before anything can be done. In practice, most internal haemorrhoid treatments can be carried out whatever your size, and waiting for weight to come down can mean months of avoidable bleeding or discomfort. Our overview of non-surgical haemorrhoid treatments compares the main options, and our article on NHS versus private treatment explains waiting times and cost. Weight loss and treatment can go ahead together.

What We Offer at Our Clinics

At our clinics in Glasgow and London we treat internal haemorrhoids with eXroid electrotherapy, which applies a low-dose direct current to the base of the haemorrhoid so that it shrinks over the following weeks. It is done without cutting or a general anaesthetic. Of 116 patients treated at our clinics since January 2025, 84% needed only one session, although individual results vary and some people need a follow-up. A consultation with examination is £365, consultation and treatment on the same visit is £1,095, and a follow-up treatment, if needed, is £795. If what we find is not something we treat, we will say so and tell you who to see.

Next Steps

If you suspect piles are linked to your weight or habits, a clear diagnosis is the best first step. Our severity test takes a couple of minutes and can help you think through your symptoms, although it is not a diagnosis. You can read about our procedure or book an appointment at our Glasgow or London clinic.

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