睡眠呼吸暂停：完整指南，症状、诊断和管理

Overview

Irritable bowel syndrome (IBS) is a common chronic functional gastrointestinal (GI) disorder, meaning it affects how your gut and brain communicate to control digestion, with no visible structural damage to the digestive tract. It affects roughly 10-15% of adults worldwide, and is more common in people assigned female at birth and those under 50. While IBS is not life-threatening and does not increase your risk of serious diseases like colon cancer, it can significantly impact daily quality of life, work, and mental health.

Signs & Symptoms

IBS symptoms vary widely from person to person, and can come and go in flares, often triggered by food, stress, or hormonal changes. Symptoms are categorized based on your primary bowel pattern:

• Abdominal cramping or pain that typically improves after a bowel movement
• Bloating and excess gas
• Diarrhea (IBS-D), constipation (IBS-C), or alternating patterns of both (IBS-M)
• Mucus in the stool
• Urgent, uncontrollable need to have a bowel movement
• Feeling of incomplete bowel emptying after using the bathroom

Causes & Risk Factors

The exact cause of IBS is not fully understood, but research points to a combination of factors: abnormal gut-brain axis communication (mis signals between the brain and gut nerves), overly strong or weak gut muscle contractions, post-infectious IBS after a severe gut infection, early life stress or trauma, food sensitivities, and imbalances in the gut microbiome. You may be at higher risk for IBS if you are under 50, assigned female at birth, have a family history of IBS, or have a history of anxiety, depression, or trauma.

Diagnosis

There is no single test to diagnose IBS. Your provider will diagnose it based on your symptoms, medical history, and by ruling out other underlying conditions. Most providers use the Rome IV criteria: recurrent abdominal pain at least 1 day per week for the past 3 months, plus at least two of the following: pain related to defecation, change in stool frequency, or change in stool form. You may need blood tests, stool tests, or a colonoscopy if you have red flag symptoms or are over 45 to rule out other conditions.

Treatment & Management

There is no one-size-fits-all treatment for IBS, so care is personalized to your subtype, symptom severity, and personal triggers. Most people start with lifestyle and dietary changes, and add medications or mental health support if symptoms persist.

• Low FODMAP diet: A temporary elimination of hard-to-digest fermentable carbs (found in certain fruits, vegetables, dairy, and grains) for 2-6 weeks, followed by gradual reintroduction to identify your personal trigger foods. This should be done with a registered dietitian to avoid nutrient deficiencies.
• Regular physical activity: 30 minutes of moderate exercise (walking, swimming, cycling) most days improves gut motility, reduces stress, and lowers flare frequency.
• Stress management: Mindfulness meditation, cognitive behavioral therapy (CBT), yoga, and deep breathing exercises can reduce gut sensitivity and symptom severity, as stress is a common IBS trigger.
• Symptom tracking: Keep a daily log of food, stress, sleep, and symptoms to identify patterns and adjust your plan with your provider.
• OTC medications: Anti-diarrheals (loperamide) for IBS-D, fiber supplements or laxatives for IBS-C, and simethicone for bloating can provide short-term relief.

Living With It

IBS is a chronic condition, but most people are able to achieve long periods of remission with minimal symptoms by sticking to a personalized management plan. Symptom flares are common, especially during periods of high stress or when you eat trigger foods, but they can usually be managed with adjustments to your routine. Connecting with an IBS support group can also help you cope with the emotional toll of living with a chronic condition, and share tips for managing flares.