While it’s commonly served cooked, many people enjoy eating zucchini raw too, as it works great in salads, with dips, as a wrap, or even spiralized to make low-carb noodles.

Zucchini, also known as courgette, is a type of summer squash with many culinary uses.

Most of the time, raw zucchini is safe to eat with little to no side effects.

Although zucchini is often treated as a vegetable, it’s botanically classified as a fruit. Like other fruits, its wide array of nutrients may benefit your health in many ways.

Here are some ways that eating zucchini may improve your health:

  • Packed with nutrients. Zucchini provides vitamins, minerals, and other beneficial plant compounds like polyphenols. These compounds act as antioxidants, which protect your cells against free radical damage.
  • Promotes healthy digestion. Water and both the soluble and insoluble fiber in zucchini can help lower your risk of constipation. Soluble fiber also acts as a source of nourishment for your gut microbiome.
  • May promote weight loss. Zucchini is high in water and fiber yet low in calories. These properties may reduce your appetite and aid weight loss.
  • Promotes healthy blood sugar levels. Zucchini is low in carbs and a good source of fiber. Diets high in fiber from fruits and vegetables may help manage blood sugar levels in people with type 2 diabetes.
  • May improve heart health. As part of a diet that is rich in fruit and vegetables, zucchini may help reduce the risk of heart disease, high blood pressure, and stroke.
  • May promote healthy vision. Zucchini offers beta-carotene and vitamin C, which promote healthy vision. They also contain the antioxidants lutein and zeaxanthin, which may reduce the risk of age-related eye disorders.

Usually, raw zucchini is safe to eat with minimal or no side effects.

However, you may occasionally encounter an extremely bitter one. This bitterness comes from cucurbitacins, a class of compounds found in members of the Cucurbitaceae family, such as squash, zucchini, and gourds.

Intake of foods high in cucurbitacins has been linked to rare instances of severe food poisoning and hair loss.

While cucurbitacin poisoning is dangerous, it’s rare from store-bought zucchinis, as suppliers tend to selectively breed crops that are low in cucurbitacins. Instead, be careful when eating wild zucchini, as they’re more likely to be high in these compounds.

That said, if you bite into zucchini and it tastes extremely unpleasant and bitter, it’s best to spit it out and dispose of the entire fruit to avoid the risk of cucurbitacin toxicity.

Another potential side effect of eating raw zucchini is bloating. This is caused by nutrients like cellulose, a structural component of plant cell walls, and soluble fiber, which your gut microbiome ferments and produces gas as a side effect.

Lastly, as with any raw fruit, there’s a potential risk of contamination from bacteria or parasites.

To minimize the risk of food poisoning, be sure to wash the fruit thoroughly with cold water while scrubbing the skin with a soft brush. Store cut zucchini in the fridge.

Scrubbing the zucchini with a soft brush before eating it can help reduce bacteria on the skin and can also reduce pesticide residue found on fresh produce.

In short, commercial varieties of zucchini should be safe to eat raw.

They are delicious, incredibly nutritious, and can be enjoyed in a variety of ways.

However, if you bite into an extremely bitter zucchini, it’s best to dispose of it. This is a sign of high concentrations of cucurbitacins, which may be harmful.

Although it’s unlikely that you will purchase an extremely bitter zucchini from the supermarket, if you do, it’s best to err on the side of caution and throw it out.

That said, the majority of produce purchased from supermarkets or farms is safe and healthy to eat raw or cooked.

Make sure to wash the zucchini thoroughly to avoid the risk of contamination from bacteria. Additionally, make sure to store it appropriately in the refrigerator for later use.

Medical Perspective

Can you suggest how people may want to try eating raw zucchini?

“Raw zucchini is often enjoyed thinly sliced and topped with olive oil and perhaps lemon or lime juice, salt and pepper (season to taste). Raw zucchini can be a refreshing snack when eaten as a crudité to dip into foods like hummus or tzatziki, or as an ingredient in stir fry, a sandwich, or wrap.”

— Jared Meacham, PhD., RD, CSCS

Learn more about health and nutrition benefits of zucchini.

Quotes represent the opinions of our medical experts. All content is strictly informational and should not be considered medical advice.

Commercial varieties of zucchini should be safe to eat raw with little risk.

They are selectively grown and bred to be low in cucurbitacins, which are compounds found naturally in zucchini, squash, and gourds that may be toxic in high doses.

However, if you bite into zucchini and it’s extremely bitter, it’s best to dispose of the entire fruit to avoid the risk of cucurbitacin poisoning, which can be dangerous.

Also, make sure to wash zucchini thoroughly to remove traces of bacteria or parasites found in nature that may potentially cause food poisoning.