From the Guidelines
During a 5-week diverticulitis flare, it is recommended to follow a clear liquid diet for 2-3 days during acute symptoms, then transition to a low-fiber diet (less than 15 grams daily) for several weeks, as advised in the AGA clinical practice update on medical management of colonic diverticulitis: expert review 1. This approach is based on the latest evidence from 2021, which suggests that a clear liquid diet can help rest the digestive system and reduce irritation of the inflamed diverticula 1. Some key points to consider when implementing this dietary approach include:
- Consuming broths, strained juices, gelatin, and tea during the clear liquid phase
- Including white bread, refined pasta, eggs, lean meats, fish, dairy products, and well-cooked vegetables without skins or seeds in the low-fiber diet
- Gradually reintroducing fiber as symptoms improve, aiming for 25-35 grams daily long-term
- Staying well-hydrated with at least 8 cups of water daily
- Avoiding nuts, seeds, popcorn, raw vegetables, and high-fiber fruits during the flare It's also important to note that a high-fiber diet is actually recommended for prevention of future flares, but this transition should be gradual and guided by symptom improvement, as suggested by the AGA clinical practice update 1. Additionally, patients should be aware of the risk factors for diverticulitis, including diet, lifestyle, medications, and genetics, and take steps to mitigate these risks, such as consuming a high-quality diet, being physically active, and avoiding nonsteroidal anti-inflammatory drug use, as recommended by the AGA clinical practice update 1. If symptoms worsen or include fever, severe pain, or inability to keep liquids down, it's essential to seek medical attention immediately, as antibiotics or other interventions may be necessary, as advised in the AGA clinical practice update on medical management of colonic diverticulitis: expert review 1.
From the Research
Dietary Recommendations for Diverticulitis Flare
During a 5-week diverticulitis flare, it is essential to follow a specific diet to aid in recovery and prevent reoccurrence.
- A liberalized diet with high dietary fibre is recommended, as opposed to dietary restrictions 2.
- A high dietary fibre diet, aligning with dietary guidelines, is strongly recommended after the acute episode has resolved, with or without dietary fibre supplementation 2.
- The daily intake of fibre should be around 25-40 g/day, which can be achieved through a well-balanced diet rich in vegetables, fruit, whole grain products, seeds, and nuts 3.
Foods to Include
- High-fibre foods such as:
- Vegetables
- Fruits
- Whole grain products
- Seeds
- Nuts
- Probiotics can also be effective in dietary management during the remission process 3.