[Real Guide] To Eat or Not to Eat: The Ultimate Diet Guide for a Successful Endoscopy

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Getting a health check-up in Korea is fast and efficient, but the secret to accurate results—especially for your Gastroscopy and Colonoscopy—lies in what you eat (or don't eat) in the days leading up to it. A clear view of your digestive tract is essential for doctors to detect even the smallest lesions.

Here is your essential guide to preparing your body for a successful screening.

1. The Colonoscopy Countdown: 3 Days Before

For a colonoscopy, you need to avoid high-fiber foods that stick to the intestinal walls or take a long time to digest.

• Foods to AVOID:
  Seeds & Grains: Kiwi, strawberries, watermelon, grapes, black rice, and brown rice.
  Fiber-Rich Vegetables: Seaweed (Kelp/Nori), mushrooms, and crunchy vegetables like cabbage or spinach.
  Nuts: Peanuts, almonds, and walnuts.

• Foods you CAN EAT:
  White Foods: White rice (plain porridge is best), white bread (no seeds), and noodles.
  Soft Proteins: Eggs, tofu, skinless chicken, and white fish.
  Clear Liquids: Clear broth, apple juice, and water.

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2. The Day Before: Final Preparation

This is the most critical window to ensure your stomach and colon are empty.

• Breakfast & Lunch: Stick to plain white porridge (Juk) or white bread. Avoid any side dishes with seeds or high fiber.

• Dinner: Most clinics recommend a fasting period starting around 6:00 PM to 8:00 PM. From this point, you should only consume water or the prescribed bowel preparation solution.

• Fasting Rule: You must fast for at least 8 to 12 hours before your appointment. This includes no chewing gum, no candy, and no smoking.

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3. Why is Fasting So Important?

• Clear Visibility: Food residue can hide polyps or inflammation, leading to an incomplete exam.

• Safety First: If you choose Sedated Endoscopy (Conscious Sedation), an empty stomach is vital to prevent anesthesia-related complications.

• Accuracy: Korea's world-class diagnostic accuracy depends on the "cleanliness" of the digestive tract during the procedure.

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4. Post-Checkup Treat: What to Eat After?

Once the screening is over, your digestive system will be sensitive.

• First Meal: Start with something soft and warm, like Korean Rice Porridge (Juk).

• Avoid: Spicy, oily, or extremely hot foods for at least 24 hours to give your stomach lining time to recover.

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Planning your health journey in Seoul? WellTrip Seoul provides clear, step-by-step preparation guides in English as soon as you book your appointment, ensuring you arrive at the clinic fully prepared and stress-free.

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