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FODMAP Diet Guide: What Is It For, Food List & Meal Plan

"FODMAP" ia a type of diet recommended for people with irritable bowel syndrome (IBS), whose main objective is to avoid the consumption of foods that can cause intestinal discomfort. These include foods with fructose, lactose, fructooligosaccharides (FOS), galactooligosaccharides (GOS) or sugar alcohols, such as carrots, beetroot, apple, mango or honey.

These types of food are known to be badly absorbed by the small intestine and end up being highly fermented by the gut bacteria, worsening the symptoms of IBS. However, it's important to note that IBS symptoms can vary greatly from person to another, and so it's important to try and identify other foods that can be causing discomfort, and remove them from the diet.

FODMAP Diet Guide: What Is It For, Food List & Meal Plan

How to do the FODMAP diet

To do the FODMAP diet you should remove all foods that are included in the FODMAP list below, for a period of 6 to 8 weeks, and pay attention to any improvement in symptoms. If there is no improvement, the diet can be stopped after eight weeks and a new treatment should be started.

If the symptoms do improve, after eight weeks you should reintroduce each food again, doing it gradually, starting with one group at a time. For instance, you can start by introducing fruits first, such as apples, pears or watermelon, and see if the intestinal symptoms comeback.

This slow reintroduction of foods is important in order to identify foods that can worsen bowel symptoms, and that should be avoided or consumed in very small quantities.

Precautions

The FODMAP diet can lead to a low intake of important nutrients, such as fibers, carbohydrates or calcium. Thus, it's important that a doctor and a nutritionist supervises the diet, to guarantee the person remains in good health.

In addition, it's important to remember that this diet is effective for about 70% of patients with IBS. For those that do not benefit from this diet, a new treatment must be done.

List of FODMAP foods 

FODMAP foods, that should be avoided, can be classified into five different groups:

Fodmap TypeNatural FoodsProcessed foods
Monosaccharides (fructose)Fruits: apple, pear, peach, mango, green beans and beans, watermelon, preserves, dried fruits, fruit juices, and cherries.Sweeteners: corn syrup, honey, agave nectar, and fructose syrup, which may be present in some foods, such as cookies, sodas, pasteurized juices, etc.
 Disaccharides (lactose)Cow's milk, goat's milk, sheep's milk, cream, ricotta, and cottage cheese.Cream cheese, ice cream, yogurt, and other foods that contain milk.
Fructooligosaccharides

Fruits: persimmon, peach, apple, lychees, and watermelon.

Legumes: artichokes, asparagus, beetroot, brussel sprouts, broccoli, cabbage, anise, garlic, onion, peas, abelmosk, shallot, red chicory.

Cereals: wheat and barley (in big quantities) and couscous.

Foods with wheat flour, pastas with wheat, cakes, cookies, ketchup, mayonnaise, mustard, processed meats such as sausages, nuggets, prosciutto, and mortadella.
Galactooligosaccharides (GOS)Lentils, chickpeas, tinned chickpeas, beans, peas, soy whole grains. Products that contain these foods 
Polyols

Fruits: apple, apricots, peach, nectarine, suckling pig, pear, plum, watermelon, avocado, and cherry. 

Vegetables: cabbage, mushrooms, and peas.

Sweeteners: xylitol, mannitol, maltitol, sorbitol, products with glycerine, erythritol, lactitol and isomalt

It is also very important to pay attention to the list of ingredients on processed food labels, since they may contain some of these foods.

What can you eat

The foods that can be included in this diet are:

  • Cereals without gluten, such as rice and oats;
  • Some fruits such as tangerines, oranges, strawberries, grapes, raspberries, lemons, ripe bananas, and melons;
  • Some vegetables such as pumpkin, olives, red bell pepper, tomato, potato, carrot, cucumber, and sweet potato;
  • Milk products without lactose;
  • Meat, fish, and eggs;
  • Chia seeds, flaxseed, sesame seeds, pumpkin seeds, and sunflower seeds;
  • Nuts such as peanut, walnuts, Brazil nut;
  • Rice, tapioca, cornflour, or almonds.

In addition, your nutritionist may consider the use of probiotics as a complement to regulate the bowels, as it's proven that people who suffer from irritable bowel syndrome sometimes have an unbalance in the gut bacteria. Some studies evidence that probiotics can help relieve symptoms. 

FODMAP diet meal plan

The following table gives an example of a three-day meal plan for a FODMAP diet:

MealDay 1Day 2Day 3
BreakfastBanana smoothie: 200 ml of chestnut milk + 1 banana + 2 tablespoons of oatsGrape juice + 2 slices of bread without gluten with mozzarella cheese and egg 200 lactose-free milk + 1 tapioca with egg
Morning Snack2 watermelon slices + 7 cashewsyogurt without lactose + 2 teaspoons of chia seeds1 mashed banana with a tablespoon of peanut butter 
Lunch/DinnerChicken risotto and vegetables: tomato, spinach, courgette, carrot, and eggplant Rice pasta with minced duck and tomato sauce with olives + lettuce, carrot, and cucumber saladBoiled fish with vegetables: potato, carrot, leek and cabbage 
Afternoon SnackPineapple juice + banana and oat cake 1 kiwi + 6 gluten-free oat cookies  + 10 chestnutsStrawberry smoothie with lactose-free milk + 1 slice of gluten-free bread with cheese 

It's important to remember that you must pay attention to what foods cause bowel symptoms and that this diet needs to be followed for six to eight weeks, under the supervision of a doctor or nutritionist.  

The quantities included in the menu may vary according to age, gender, physical activity and associated health conditions. Ideally, you should visit a nutritionist and ask for a complete assessment in order to develop a more individualized meal plan according to your needs.

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