Are Cashews a Nut? Why This Common Snack Isn’t What You Think

There are times when cashews are called nuts, but are they really nuts? Not exactly. Although cashews look and taste like nuts, they are actually the seeds of a fruit called a drupe.

Their shells are poisonous, so they are taken off before eating. Learn what cashews are, how they grow, what health benefits they have, and if they're safe for people who are allergic to nuts in this article.

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Are Cashews a Nut?

People often mix cashew nuts with tree nuts, but they aren't really nuts according to science. They are the seeds of a fruit and come from a tropical tree. Even though they taste and smell like nuts, they are not the same as other nuts because of how they grow and are categorized.

How Cashews Grow on a Tropical Tree

The cashew tree, or Anacardium occidentale, is native to South America, but it is now grown in many places, such as West Africa and India. The fruit on the tree is shaped like a pear and is called a cashew apple. The cashew itself comes from under the fruit.

• Cashew fruit structure: The cashew seed grows within the true fruit, a kidney-shaped drupe located beneath the cashew apple.

• Toxic outer shell: The cashew seed is wrapped in a hard shell that contains urushiol, a chemical also found in poison ivy.

• Global production: Countries like India and West Africa are leading producers of cashews today.

Why Cashews Are Not True Nuts

A true nut is a fruit with a hard shell that doesn't naturally split open and has only one ovary. That's not what cashews are.

• Cashews are edible seeds: They grow as part of a drupe, not like acorns or chestnuts which are true nuts.

• Used like other nuts: Cashew butter, roasted cashews, and cashew cheese are popular alternatives to products made with other nuts.

• Not in the legume family: Cashews don’t grow in pods like peanuts and aren’t related to legumes.

Can You Eat Cashews If You Have a Nut Allergy?

Cashews aren't really nuts, but when it comes to allergies, they are still tree nuts. If you are allergic to other tree nuts, cashews may make your symptoms worse or the same.

Cashews Are a Common Food Allergen

If you are allergic to tree nuts, cashews are one of the worst. Reactions can be mild or even life-threatening.

• Risk of severe symptoms: These include hives, trouble breathing, vomiting, or a drop in blood pressure.

• Tree nut classification: Even though they're seeds, cashews are labeled as tree nuts due to similar proteins.

• Medical advice needed: If you’ve had any nut reactions, consult a doctor before eating cashews or products like cashew butter or cashew milk.

Cashew Allergies and Cross-Reactions

If someone is allergic to cashews, they probably aren't immune to other tree nuts or peanuts, even though peanuts are a type of legume.

• Similar proteins: Cashews share allergens with almonds, pistachios, and other tree nuts.

• Avoid mixed nut products: Snacks like salted cashews or stir fries may contain traces of other nuts or peanuts.

• Always read labels: Cashew ingredients can be hidden in sauces, baked goods, and processed foods.

Are Cashews a Fruit or Legume?

A lot of people don't understand how cashews grow. Are they a fruit? A legume? The answer lies in the way their plants are built.

Cashews Come From a Fruit, But Are Not Fruits

A cashew apple is grown on a cashew tree, but the cashew nut, which grows below the apple, is the true fruit's seed.

• Part of a drupe: The cashew is the edible seed from a hard-shelled fruit, similar to mango pits or peach stones.

• Rich in vitamin C: The cashew apple is high in vitamin C but rarely eaten outside tropical countries like South America.

• Shell must be removed: The outer shell contains toxic oils and must be roasted or steamed off before eating.

Cashews Are Not in the Legume Family

On the other hand, cashews don't grow in pods like peanuts do; they grow on trees.

• Different growth pattern: Cashews grow on a tropical tree, not underground like peanuts.

• Not related to legumes: Cashews and peanuts belong to different plant families.

• Popular nut alternative: Cashews are often used in vegan diets as a base for cashew milk and cashew cheese.

Are Cashews a Healthy Nut?

Cashews are a tasty snack, but they are also full of healthy nutrients that are good for you. These foods aren't really nuts, but when eaten in the right amounts, they are very good for you. One ounce of cashews has the right amount of fat, protein, and vitamins.

Nutrition in a Single Ounce of Cashews

A small handful of cashews, which weighs one ounce, has important minerals and healthy fats that most people need everyday for good health.

• Rich in healthy fats: Mostly unsaturated fats that help lower bad cholesterol and support heart health.

• Full of important nutrients: Contains magnesium, copper, zinc, and iron, which support energy, brain function, and immunity.

• Source of antioxidants: Protects your body’s cells from damage caused by free radicals.

• Low in sugar: Makes cashews a smart snack for people watching their sugar intake.

Cashews and Their Impact on Health

Many people believe that cashews are good for your heart, but some people should be careful about how many they eat. Cashews contain moderate levels of oxalates, and individuals prone to kidney stones may need to moderate intake, though levels are generally lower than those in spinach or rhubarb.

• Good for heart health: Their healthy fats can improve cholesterol levels when eaten in moderation.

• Be mindful of portion size: Too many cashews can add extra fat and calories to your diet.

• Kidney stone caution: If you're at risk, talk to your doctor before eating large amounts of cashews or other nuts.

What Can FullyHealthy Do for You?

FullyHealthy is an online store for people who have to watch what they eat. You can find safe, trusted products all in one place, whether you're trying to avoid allergens, eat clean, or stick to a plan like AIP or paleo.

Cashew Products You Can Trust

FullyHealthy sells good cashew-based foods that are good for a lot of different diets. Everything has clear labels and comes from good sources.

• Artisana raw cashew butter: Made with only cashews, perfect for recipes, snacks, and spreads.

• Artisana pecan butter with cashews: A creamy, slightly sweet blend of cashews and pecans.

• Mauna Loa sea salt macadamia nuts: A crunchy, lightly salted snack that pairs well with salads or desserts.

Easy, Clean Shopping for Your Diet

Shopping at FullyHealthy is easy for people who have to follow certain diets or are trying to eat more healthily.

• Great for healthy cooking: Use their ingredients in dishes, salads, coffee blends, or desserts.

• Helpful filters: Shop by diet type, stage, or ingredient to find exactly what you need.

• Supports global small brands: Products are ethically sourced from trusted suppliers in places like Brazil and around the world.

Final Thoughts

Then, are cashews a nut? Even though it's not true, they are treated like one in the kitchen. You can eat the seeds that grow outside of a fleshy cashew fruit. The seeds are full of healthy fats, antioxidants, and other nutrients that your body needs.

Raw cashews, cashew butter, and cashew milk are all tasty ways to eat them. People all over the world use them in recipes, snacks, and cooking. Remember that moderation is key, especially for people who are worried about getting kidney stones or nuts.

FAQs

Are cashews a nut or seed or fruit or legume with fleshy shell?

Cashews are edible seeds from a fleshy fruit, not a true nut or legume.

Can cashews cause kidney stones or help with heart health?

Cashews may affect kidney stones due to oxalates, but they support heart health with healthy fats.

Is cashew butter better than other nuts like almonds or pecans in cooking?

Cashew butter is smooth and great in cooking, but almonds and pecans have other nutrients too.

Do salted cashews and roasted cashews still have other nutrients?

Yes, but salted cashews may have added salt and sugar while still keeping other nutrients.

Are beans, peas, or peanuts better than cashew milk in coffee or desserts?

Beans, peas, and peanuts are not used in coffee or desserts like cashew milk is.