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Hormonal Shifts and IBS Patterns

The Tummy Clinic | December 1st, 2025

Hormonal Shifts and IBS Patterns

Hormones and the gut are deeply connected.
This is why many people notice symptom changes during:

  • menstrual cycles
  • ovulation
  • perimenopause
  • menopause
  • thyroid shifts
  • times of high cortisol

Why Hormones Affect IBS

Hormones influence:

  • motility
  • sensitivity
  • abdominal tension
  • fluid balance
  • inflammation
  • pain pathways
  • stress tolerance

A hormonal shift can push the system from stable → reactive.

Common Hormonal IBS Patterns

  • bloating before menstruation
  • urgency during the first days of flow
  • constipation in the luteal phase
  • increased sensitivity during perimenopause
  • sleep disruption → gut disruption

These patterns are real — and extremely common.

The Emotional Side of Hormonal Gut Changes

Patients say:

  • “My IBS follows my cycle.”
  • “Perimenopause has wrecked my gut.”
  • “Why does my IBS flare before my period?”

Your gut is reacting to hormonal fluctuations — not failing.

How TTC Supports Hormone-Linked IBS Patterns

We analyze:

  • timing
  • cycle phase
  • sleep
  • stress
  • motility rhythm
  • sensitivity trends

Understanding your cycle changes your IBS care — completely.

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Frequently Asked Questions

Managing IBS with diarrhea can be challenging, but making the right food choices can help. Here’s what works for many people with IBS:

  • Low FODMAP diet: This dietary approach helps reduce symptoms like diarrhea, bloating, and stomach pain. It involves removing certain foods and gradually reintroducing them to see which ones trigger your symptoms.
  • Easy-to-digest foods: Stick with foods like plain rice, cooked carrots, zucchini, and lean proteins (e.g., chicken, fish) to ease digestion.
  • Avoiding triggers: Steer clear of fatty, spicy, or fried foods, as well as dairy and caffeine. These can worsen symptoms for many people with IBS.

If you’re unsure which foods work for you, consulting with a healthcare provider can help you create a personalized meal plan.

Bloating, gas, and stomach pain are common in IBS. These symptoms often result from:

  • Gas buildup: Undigested food or fermentation in the intestines can cause gas and bloating.
  • Gut motility issues: In IBS, food may move too quickly or slowly through the digestive tract, leading to discomfort.
  • Food sensitivities: Certain foods like high FODMAP foods can cause bloating or pain.

Managing these symptoms typically involves diet modifications, stress management, and finding the foods that work best for your body.

IBS constipation can be tough, but there are ways to improve bowel movements:

  • Increase soluble fiber: Foods like oats, bananas, and carrots can help soften stool.
  • Stay hydrated: Drinking plenty of water helps keep things moving.
  • Exercise regularly: Physical activity helps stimulate digestion.

If these strategies don’t work, gentle laxatives or stool softeners might be considered, but always under the guidance of a healthcare professional.

Certain foods can make IBS symptoms worse, including:

  • High FODMAP foods: These include foods like onions, garlic, certain fruits (e.g., apples, watermelon), and dairy.
  • Fatty foods: Rich, greasy foods often cause discomfort for those with IBS.
  • Caffeine and alcohol: These can irritate the digestive system and increase symptoms like diarrhea or bloating.

By tracking your food intake and symptoms, you can start to identify which foods are causing flare-ups and work toward a personalized plan.

Constant constipation in IBS can be caused by:

  • Low fiber intake
  • Dehydration: Not drinking enough water can make stool hard and difficult to pass.
  • Stress: Emotional stress often affects digestion and can contribute to constipation.

If constipation persists despite lifestyle changes, consider speaking with a healthcare provider for further assessment and potential treatment options.

Severe bloating can occur when:

  • Gas is trapped in the intestines due to difficulty digesting certain foods or fermentation.
  • Slow motility: In IBS, the digestive system may move food too slowly, leading to bloating.

To manage bloating, consider reducing high FODMAP foods and incorporating more digestive-friendly meals. Stress management techniques like yoga or mindfulness can also help reduce bloating by calming the nervous system.

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