Fibre gets none of the attention that protein and supplements do, and it does more than most of what is sold to women in this decade. Most adults eat around half the recommended amount, and the shortfall touches cholesterol, blood sugar, constipation, appetite and the gut microbiome at once.

Where we stand: Menova is an independent publication. We sell no supplements and no plans, we are not your doctor, and this is general education, not medical advice.

The two kinds, and why the distinction is useful

Soluble fibre dissolves in water and forms a gel. Oats, barley, beans, lentils, apples, psyllium. This is the one that lowers LDL cholesterol and slows glucose absorption.

Insoluble fibre adds bulk and speeds transit. Wholegrains, bran, vegetable skins, nuts. This is the one for constipation.

Most foods contain both. But if you have a specific problem, knowing which to increase saves you months.

Why it matters more now

Cholesterol. Soluble fibre is one of the few dietary changes with a direct, measurable effect on LDL — and LDL rises around the transition for reasons unrelated to what you eat; see cholesterol after menopause.

Blood sugar. Fibre slows absorption and blunts the spike-and-trough pattern that drives cravings, at a point when insulin sensitivity is declining; see insulin resistance in menopause and sugar cravings in perimenopause.

Constipation, which becomes more common as gut motility slows with lower estrogen and progesterone. This matters beyond comfort: chronic straining loads the pelvic floor and contributes to prolapse and leaking; see menopause bloating and gut changes and pelvic organ prolapse.

The gut microbiome. Fibre is what gut bacteria actually live on. This is the intervention with real evidence, as opposed to most probiotic products; see the gut microbiome in menopause.

Appetite and satiety, which affects weight management more sustainably than restriction.

Bowel cancer risk, where higher fibre intake is associated with lower risk — and where screening commonly begins at 45; see health screening in your 50s.

How much, and where you are now

Guidance commonly suggests around 25 to 30 grams a day for adults. Most people eat 12 to 15.

Roughly what things contain:

  • Half a cup of cooked lentils — about 8g
  • Half a cup of black beans — about 7g
  • A pear or apple with skin — about 4–5g
  • 40g of oats — about 4g
  • A tablespoon of chia seeds — about 5g
  • A slice of wholemeal bread — about 2g
  • A cup of raspberries — about 8g
  • A medium potato with skin — about 4g
  • 30g of almonds — about 3.5g

Beans and lentils do most of the work, which is why "eat more vegetables" alone rarely closes the gap.

Increase it slowly

The single most common mistake: doubling fibre in a week, getting bloated and gassy, and concluding fibre does not suit you.

  • Add roughly 5g a week, not more
  • Increase fluid alongside it. Fibre without water makes constipation worse, which is the opposite of the intention
  • Expect a few weeks of adjustment; the gut microbiome adapts
  • Spread it across meals rather than one large hit

If you have IBS, this needs more care — some fibres worsen symptoms while others help, and soluble is generally better tolerated than insoluble. See IBS and menopause.

Practical additions

Small changes, ranked by effort:

  • A tin of beans or lentils into a soup, stew, curry or salad. The highest-return single habit
  • Oats for breakfast, with berries and seeds — and add protein alongside, since oats alone leave most women short; see how much protein you need
  • Leave skins on potatoes, apples, pears
  • Wholegrain versions of what you already eat
  • A handful of nuts as the afternoon snack
  • Chia or ground flaxseed into yoghurt
  • Frozen vegetables, which are cheap, keep, and count identically
  • Popcorn, which is a whole grain

Fibre supplements

Food first, and supplements are not useless.

Psyllium has the best evidence — for constipation, for IBS, and for LDL cholesterol. It is soluble, well studied, and cheap.

Inulin and chicory root are added to many "high fibre" processed products and commonly cause gas and bloating. If a bar or drink is making you uncomfortable, check whether it contains these — see how to tell whether a supplement is worth buying.

Take supplements with plenty of water, and separate them from medication by a couple of hours, since fibre can affect absorption — including levothyroxine and iron; see HRT and thyroid medication and how to actually take iron.

When constipation is not just fibre

Worth checking rather than treating indefinitely:

  • Thyroid disease, a classic cause — see perimenopause versus thyroid
  • Medication, including iron, some painkillers, and some blood pressure drugs — see medications that mimic menopause
  • Low fluid intake
  • Coeliac disease, which can present in midlife
  • Pelvic floor dysfunction, where the problem is coordination rather than transit — a pelvic health physiotherapist can treat this

See a clinician about: blood in your stool, black stools, unexplained weight loss, a change in bowel habit lasting more than a few weeks, persistent abdominal pain, or persistent bloating most days for three weeks or more — that last one is a recognised ovarian cancer symptom and is routinely attributed to diet; see ovarian cysts in perimenopause.

How to sit on the toilet

Unglamorous and genuinely effective, particularly if straining is part of your picture:

  • Feet on a low stool, so knees are above hips
  • Lean forward, elbows on knees
  • Relax and breathe out rather than holding your breath and bearing down
  • Do not sit for long stretches waiting

Straining repeatedly is a contributor to prolapse and leaking, so this is worth getting right — see leaking when you exercise.

The comparison

A month of a mid-priced menopause supplement costs more than a month of lentils, oats and frozen berries — and fibre has better evidence for cholesterol, blood sugar and gut health than almost anything in that bottle.

That is the whole argument. It is not exciting, which is precisely why it goes unmentioned.

The free 2-minute Menova self-check organizes your symptom picture so you can see what is worth prioritising — no account, not a diagnosis, and your answers never leave your device.

This article is general education, not medical advice or a personalised nutrition plan. Increase fibre gradually and with adequate fluid. Report blood in your stool, unexplained weight loss, or a lasting change in bowel habit to a licensed clinician.

Sources: ODPHP — Dietary Guidelines for Americans, NIDDK — Digestive Diseases, NHLBI — Blood Cholesterol, and NHS — Eat Well.