Skip to content

When to start eating again after gastroenteritis?

4 min read

According to the World Health Organization, proper nutrition and fluid intake are fundamental in preventing complications from gastroenteritis, including severe dehydration. Understanding when to start eating again after gastroenteritis is vital for supporting your body's recovery and replenishing lost nutrients effectively.

Quick Summary

After gastroenteritis, allow the stomach to settle, then begin with clear liquids to rehydrate. Transition gradually to bland, easy-to-digest foods while avoiding irritants like fatty, spicy, and dairy products. Resume a normal diet based on tolerance and symptom improvement. Hydration remains the top priority throughout the recovery process.

Key Points

  • Start with liquids first: Allow your stomach to rest by starting with clear liquids like water, broths, and oral rehydration solutions before introducing solid foods.

  • Follow a phased reintroduction: Gradually progress from clear liquids to bland, easy-to-digest foods like bananas, rice, applesauce, and toast, often called the BRAT diet.

  • Avoid irritants initially: Steer clear of fatty, spicy, and dairy-heavy foods, as well as caffeine and alcohol, for several days to avoid upsetting your healing digestive system.

  • Prioritize hydration throughout: Replenish lost fluids and electrolytes consistently by sipping liquids frequently to prevent dehydration, which is a major risk with gastroenteritis.

  • Listen to your body's signals: Advance your diet only as your symptoms improve and tolerate new foods without nausea or stomach discomfort.

  • Consider probiotics for gut health: Probiotic-rich foods or supplements may help restore beneficial gut bacteria and aid recovery, especially if dairy is tolerated.

In This Article

Listen to Your Body: A Phased Approach

Recovering from gastroenteritis, commonly known as a stomach bug, requires a cautious and patient approach to reintroducing food. Forcing yourself to eat too soon can irritate an already inflamed digestive system and prolong your recovery. The key is to progress through distinct phases, listening to your body's cues at each step. This process helps the intestinal lining heal, restores your energy, and prevents a relapse of symptoms.

Phase 1: Resting the Stomach and Focusing on Fluids

In the initial hours following the last episode of vomiting or severe diarrhea, it is crucial to give your digestive system a complete rest from solid food. The primary goal during this phase is to rehydrate your body and restore electrolytes lost through illness.

Best practices during Phase 1:

  • Start with ice chips: Begin by sucking on ice chips to introduce fluids slowly and gently.
  • Sip clear liquids: Once ice chips are tolerated, progress to small, frequent sips of clear liquids. Examples include water, clear broth, diluted fruit juice (like apple juice), weak herbal tea (like ginger or chamomile), and oral rehydration solutions (ORS).
  • Avoid certain drinks: Steer clear of caffeinated beverages, alcohol, and sugary sodas, which can exacerbate dehydration or irritate the stomach.

Phase 2: Reintroducing Bland, Easy-to-Digest Foods

After successfully tolerating clear fluids for several hours without symptoms returning, you can slowly begin to introduce bland, low-fiber foods. This is where the well-known BRAT diet often comes into play, though a less restrictive bland diet is now widely recommended.

Foods to introduce in Phase 2:

  • Bananas: Easy to digest and rich in potassium, an important electrolyte.
  • Plain white rice: A simple carbohydrate that is gentle on the stomach.
  • Applesauce: A cooked fruit option that is easier to digest than raw fruit.
  • Plain toast or crackers: Simple starches that provide energy without irritating the gut.
  • Cooked, skinless chicken: A source of lean protein that is generally well-tolerated.
  • Boiled potatoes: A good source of potassium and easy to digest.
  • Oatmeal: A low-fiber option that provides sustained energy.

Start with very small portions and space your meals out throughout the day. If you feel any discomfort, nausea, or if your diarrhea returns, revert to the liquid-only phase for a period before trying again.

Phase 3: Transitioning Back to a Normal Diet

As your symptoms continue to improve and you tolerate the bland diet for a couple of days, you can gradually reincorporate a wider variety of foods. This phase involves slowly adding back more complex carbohydrates, cooked vegetables, and other protein sources.

Considerations for Phase 3:

  • Reintroduce dairy cautiously: Some individuals experience temporary lactose intolerance after gastroenteritis, so add milk and other dairy products back slowly. Probiotic-rich yogurt may be introduced earlier if well-tolerated.
  • Add lean protein: Continue with lean poultry and introduce lean fish or eggs.
  • Incorporate cooked vegetables: Add bland, cooked vegetables like carrots, green beans, and zucchini.
  • Avoid irritants: Continue to avoid fatty, fried, spicy, or heavily seasoned foods, as well as high-fiber and acidic items, until your digestive system is fully healed.

Foods to Eat vs. Foods to Avoid After Gastroenteritis

Foods to Eat (Post-symptoms) Foods to Avoid (For a few days)
Clear liquids: Water, broth, herbal tea, ORS Dairy products: Milk, cheese, ice cream (may cause temporary lactose intolerance)
Bland starches: Plain rice, crackers, toast High-fat foods: Fried foods, greasy meals, pizza, heavy sauces
Soft fruits: Bananas, applesauce, melons Spicy foods: Chilli peppers, hot sauces, heavy spices
Lean proteins: Skinless chicken, eggs, plain fish High-sugar items: Candy, sweetened juices, soda
Cooked vegetables: Carrots, potatoes, green beans Caffeine and Alcohol: Coffee, some teas, soda, alcoholic beverages
Probiotic-rich foods: Yogurt (if tolerated), kefir High-fiber foods: Raw vegetables, nuts, seeds, dried fruit

The Role of Probiotics in Recovery

Probiotics are beneficial bacteria that can help restore a healthy balance of gut flora, which can be disrupted by gastroenteritis. Some research suggests that introducing probiotics may help shorten the duration of diarrhea. Probiotic-rich foods like yogurt (containing live cultures) and kefir, or probiotic supplements, can be considered during the recovery phase, especially once solid food is tolerated. However, for those with temporary lactose intolerance, choosing non-dairy or lactose-free probiotic sources may be necessary.

When to Seek Medical Advice

While most cases of gastroenteritis resolve on their own with proper hydration and dietary management, certain symptoms warrant a consultation with a healthcare provider. Seek medical advice if you experience:

  • Signs of severe dehydration, such as infrequent urination, dizziness, or confusion.
  • Persistent high fever.
  • Bloody stools.
  • Inability to keep any fluids down for over 12 hours.
  • Symptoms that last longer than a few days and do not improve.

Conclusion

Deciding when to start eating again after gastroenteritis is not about a rigid timetable but about a mindful, gradual process. By starting with clear fluids, rehydrating effectively, and then slowly transitioning to bland, easily digestible foods, you give your body the best chance to heal. Paying close attention to your body's signals and avoiding common irritants are the cornerstones of a successful recovery diet. With patience and the right nutritional approach, you can restore your digestive health and regain your strength. For more information on dietary management during and after viral gastroenteritis, see the official guidance from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).

Frequently Asked Questions

You should wait several hours after your last episode of vomiting has stopped before attempting to eat solid food. Start by taking small sips of clear liquids, and if those are tolerated, you can slowly begin reintroducing bland foods later.

While the BRAT diet (bananas, rice, applesauce, toast) can be a useful starting point, many health professionals now recommend a broader bland diet to ensure a wider range of nutrients. Exclusively following the BRAT diet for too long can lead to a lack of protein, fat, and other essential nutrients.

The best liquids for rehydration are oral rehydration solutions (ORS) designed to replace lost electrolytes. Water, clear broths, and weak herbal teas are also good choices. Avoid high-sugar fruit juices, caffeinated drinks, and alcohol.

Gastroenteritis can cause temporary lactose intolerance, making dairy products difficult to digest and potentially worsening symptoms like diarrhea. It is best to reintroduce dairy slowly as your digestive system heals.

You can typically begin to return to your normal diet within a few days, or about 2-3 days after major symptoms have subsided, as long as you feel well enough. The transition should be gradual, reintroducing normal foods while monitoring your body's tolerance.

Good options include plain white rice, toast, crackers, bananas, applesauce, boiled potatoes, chicken soup with plain noodles, and scrambled eggs.

Yes, some studies suggest that probiotics can help restore a healthy balance of gut bacteria and potentially shorten the duration of diarrhea associated with gastroenteritis. Probiotic-rich foods like yogurt or kefir can be helpful if tolerated.

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.