These Foods Could Be Secretly Poisonous—Here’s What You Need To Know

Preparing meals for your family is a meaningful way to show you care, but it's important to know how to do so safely. You don't need to be afraid of your kitchen, but being informed helps you handle certain items with proper caution. Many plants produce natural compounds to protect themselves from pests or animals.

Understanding these simple safety rules will allow you to enjoy all your favorite foods without worry.

Mango peels

Mangos for sale in a market, Moyen-Comoé, Abengourou, Ivory Coast...
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Eric Lafforgue/Art in All of Us/Corbis via Getty Images

The skin of a mango contains a substance called urushiol, which is the same organic oil found in poison ivy. You should always avoid eating the skin, bark, and leaves of a mango.

Always wash your hands thoroughly after peeling the fruit or ask someone else to prepare it if you are highly allergic. Most people can safely eat the flesh once the outer skin is completely removed.

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Nutmeg

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Eating very large quantities of ground nutmeg can lead to a condition called "nutmeg poisoning" because it contains a compound called myristicin. While a teaspoon in a cake is perfectly safe, consuming several tablespoons can cause dizziness and nausea.

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You should always use this spice in moderation and follow the measurements suggested in your favorite family recipes.

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Uncooked kidney beans

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Raw or undercooked kidney beans contain high levels of lectins, which can cause severe digestive distress. Just a few raw beans are enough to make a person feel very ill within a few hours.

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You must always soak your dried beans and then boil them at a high temperature for at least ten minutes. This process completely neutralizes the toxin and makes the beans a safe and healthy source of protein.

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Rhubarb leaves

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Rhubarb stalks are a delicious addition to pies and jams, but you must always discard the large green leaves. The leaves contain high concentrations of oxalic acid, which can be harmful to humans and pets if ingested in large amounts.

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Symptoms of eating the leaves include breathing difficulties and kidney irritation. You should trim the leaves away as soon as you bring the plant into your kitchen.

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Green potatoes

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When potatoes are exposed to light for too long, they produce chlorophyll and a natural toxin called solanine. The green color on the skin is a clear warning sign that the solanine levels have increased significantly.

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Eating large amounts of green potato flesh can lead to stomach pain or a bitter taste. You should always store your potatoes in a dark place and peel away any green spots or sprouts before you begin cooking.

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Cherry pits

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The hard pits inside cherries contain a compound that the body converts into cyanide if the seed is crushed or chewed. Swallowing a whole pit is usually not a problem because it passes through your system intact.

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However, you should avoid biting down on the seeds or grinding them into smoothies. It's especially important to remove the pits before serving cherries to small children who might accidentally crunch them while eating the sweet fruit.

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Elderberries

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Elderberry
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Elderberries are frequently used in syrups and jams to support immune health, but they should never be eaten raw. The berries, leaves, and stems contain substances that can produce cyanide and cause nausea if they're not processed correctly.

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You should always cook elderberries thoroughly to a boil to make them safe for consumption. Heat effectively breaks down the harmful compounds so you can enjoy them safely.

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Apple seeds

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Much like cherry pits, the small black seeds inside an apple contain a substance that can release cyanide when digested. While the casing on the seeds is quite strong, chewing several of them at once could potentially release the toxin.

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You would need to eat a very large number of seeds to feel any ill effects, but it is still a good habit to core your apples.

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Staying safe in the kitchen is mostly about using common sense and following traditional preparation methods. Most of these natural toxins are easily avoided by peeling, cooking, or simply discarding the parts of the plant we don't usually eat.

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Knowledge is your best tool for keeping your home kitchen a safe and nourishing environment for everyone you love.