Fresh vegetables are an important part of a healthy diet, but viral posts sometimes claim that one particular vegetable is “the most contaminated with parasites” and can expose people to dangerous infections.

The truth is more nuanced.

There is no universally recognized “No. 1 vegetable” that is always the most contaminated with parasites. The risk depends on where produce was grown, the quality of irrigation water, soil contamination, handling, storage, and whether the vegetable is eaten raw or cooked. The CDC notes that parasites can contaminate raw vegetables when they come into contact with contaminated soil, water, or human or animal fecal matter. (CDC)

That doesn’t mean you should stop eating vegetables. In fact, fresh produce remains an important part of a healthy diet. The key is proper preparation.

🥬 Why Can Raw Vegetables Carry Parasites?

Vegetables are grown outdoors and can come into contact with soil, irrigation water, animals, insects, farm equipment and human hands.

Some parasites can be transmitted through contaminated food or water. The CDC lists organisms such as Cyclospora, Cryptosporidium, Giardia and Toxoplasma gondii among parasites that can be transmitted through food or water. (CDC)

Certain raw vegetables and aquatic plants can have a higher potential risk when they are grown or handled in environments where contamination is possible. But that doesn’t mean every vegetable of that type is contaminated.

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🦠 Does Eating a Vegetable Raw Mean You Will Get Parasites?

No.

Finding parasites or harmful microorganisms on produce is a food-safety concern, but exposure does not automatically mean infection.

The risk can be reduced substantially through good food-handling practices.

The CDC specifically recommends washing fruits and vegetables thoroughly under running water before eating, cutting or cooking them. (CDC)

For certain vegetables, cooking provides an additional level of protection because adequate heat can kill many harmful microorganisms.

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🚿 How to Wash Vegetables Properly

One of the easiest ways to make fresh produce safer is also one of the simplest.

Step 1: Wash your hands

Before preparing vegetables, wash your hands with soap and water for at least 20 seconds.

Step 2: Rinse under running water

Place the vegetables under clean, running water and gently rub the surfaces with your hands.

The FDA recommends washing fresh produce thoroughly under running water before preparing or eating it. (U.S. Food and Drug Administration)

Step 3: Remove damaged portions

Cut away bruised, damaged or visibly spoiled areas.

Step 4: Dry the produce

Drying with a clean towel or paper towel can help remove additional contamination from the surface. (U.S. Food and Drug Administration)