Are Cashews Low FODMAP? A Complete Guide for IBS

If you’re asking yourself “are cashews low FODMAP?”, you’re already taking a thoughtful step towards understanding your gut health. Cashews are nutritious, creamy, and widely used, but when it comes to IBS and the low FODMAP diet, they can be a bit tricky.

Let’s explore this together in a calm, clear, and evidence-based way, so you can make decisions with confidence, not confusion.

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Are Cashews Low FODMAP?

The simple answer is:

👉 No, cashews are not low FODMAP in standard serving sizes.

According to Monash University:

• Cashews are high in GOS (galacto-oligosaccharides)
• They also contain fructans
• Their classification remains unchanged in the 2025 update

This means that for most people with IBS, cashews are likely to trigger digestive symptoms, especially when eaten in typical portions.

Why Are Cashews High FODMAP?

Understanding GOS and Fructans

Cashews contain two types of FODMAPs:

1. GOS (Galacto-oligosaccharides)

• Found in legumes and some nuts
• Poorly absorbed in the small intestine
• Fermented by gut bacteria

2. Fructans

• Chains of fructose molecules
• Also found in wheat, onion, and garlic

Both can lead to:

• Bloating
• Gas
• Abdominal discomfort
• Changes in bowel habits

💡 When a food contains multiple FODMAP types, like cashews, it can be even more difficult for sensitive guts to tolerate.

Can You Eat Cashews on a Low FODMAP Diet?

During the Elimination Phase

During this phase:

👉 It’s best to avoid cashews completely.

This helps reduce symptoms and gives your gut time to settle.

During the Reintroduction Phase

Here’s where things become more personalised.

Cashews are sometimes used to test tolerance to:

• GOS
• Fructans (in part)

However, because they contain more than one FODMAP group, they are not always the ideal reintroduction food.

From the latest updates:

• Cashews remain high FODMAP
• No change in their classification

👉 A dietitian may suggest testing other foods first to isolate specific triggers more clearly.

During the Personalisation Phase

Once you understand your tolerance:

• Some people may handle very small quantities
• Others may need to avoid them entirely

And that’s perfectly okay. Your goal is not restriction; it’s comfort and balance.

How Many Cashews Are Too Many?

This is where many people get caught out.

👉 Even small portions of cashews can be high FODMAP.

Unlike some foods, there isn’t a clearly “safe” low FODMAP serving that works for most people.

Why?

• GOS accumulates quickly
• Cashews are dense and easy to overeat

💡 A handful (which seems small) is usually well above tolerance for IBS sufferers.

Symptoms You Might Experience After Eating Cashews

If cashews don’t suit your gut, you might notice:

• Bloating or abdominal swelling
• Gas and discomfort
• Stomach cramps
• Diarrhoea or urgency

Symptoms can appear:

• Within a few hours
• Or the following day

💛 Gentle reminder: this isn’t failure; it’s information your body is sharing with you.

Are Cashew Butter and Cashew Milk Low FODMAP?

Cashew Butter

👉 Not low FODMAP

• Made from concentrated cashews
• Even small amounts can trigger symptoms

Cashew Milk

This one depends:

• Commercial cashew milk (diluted) → sometimes tolerated in small amounts
• Homemade cashew milk → usually high FODMAP

💡 Always check ingredients and portion size carefully.

Low FODMAP Alternatives to Cashews

The good news? You have plenty of safe and delicious options.

🌰 Low FODMAP Nuts

• Almonds (small portions)
• Walnuts
• Macadamia nuts
• Pecans
• Brazil nuts

👉 These are generally better tolerated when eaten in appropriate serving sizes.

🥜 Seed Alternatives

• Pumpkin seeds
• Sunflower seeds
• Chia seeds

These are:

• Nut-free
• Low FODMAP
• Nutrient-rich

How to Replace Cashews in Recipes

Cashews are often used for:

• Creamy sauces
• Vegan cheeses
• Snacks

Here’s how to swap them:

For Creamy Texture

• Lactose-free yoghurt
• Coconut cream (in moderation)

For Crunch

• Walnuts or pecans

For Nut Butters

• Peanut butter (check portion)
• Almond butter (small amounts)

Nutritional Benefits of Cashews

Even though they’re high FODMAP, cashews are still nutritious:

• Rich in healthy fats
• Source of magnesium
• Contain plant-based protein
• Support heart health

💡 If tolerated in small amounts later, they can still be part of a balanced diet.

Practical Tips for Eating Nuts on a Low FODMAP Diet

1. Watch Portion Sizes Carefully

Even low FODMAP nuts can become high FODMAP in large amounts.

2. Avoid Mixing High FODMAP Foods

Combining triggers can worsen symptoms.

3. Introduce Slowly

Test one food at a time during reintroduction.

4. Keep a Food Diary

Track symptoms to identify patterns.

Common Mistakes to Avoid

• Assuming all nuts are low FODMAP
• Eating “just a few” cashews (they add up quickly)
• Overlooking cashew-based products
• Skipping reintroduction

Final Thoughts

So, are cashews low FODMAP?

👉 No, but that doesn’t mean you’ll never eat them again.

With the right approach:

• You can understand your tolerance
• You can find satisfying alternatives
• You can build a diet that feels good, not restrictive

Take it one step at a time. Your gut deserves that kindness.

FAQ: Are Cashews Low FODMAP?