Health Benefits of Radishes

Most of us probably think of radishes as a garnish that adds a little decorative flair to our dinner plates (hello, radish roses!).

But the root vegetable can also shine on its own. It’s low in calories and contains fiber, vitamin C and other important nutrients.

Registered dietitian Kate Patton, RD, LD, explains what we know about radishes and how to incorporate them into your diet.

What is a radish?

As one of the root vegetables from the Brassica family, radishes are cousins to other vegetables like broccoli, cabbage, kale, horseradish and turnips.

Radishes grow in the ground and come in different varieties and shades (think white, black, pink and purple).

“The most common type typically found in grocery stores is a red radish,” says Patton. “The small, round vegetable has a crunchy texture and a peppery taste. Another common variety is a daikon radish, which is popular in Asian cooking. It’s white and has a milder flavor.”

When it comes to its nutritional profile, radishes are low in calories. For example, a 1/2 cup of sliced raw radishes contains about:

• 9.28 calories
• 1.97 grams of carbohydrates
• 0.93 grams of fiber
• 0.40 grams of protein
• 1.08 grams of sugar
• 0.06 grams of fat

Radishes also contain nutrients like:

• Calcium
• Folate
• Iron
• Magnesium
• Potassium
• Vitamin C
• Zinc

“While most people eat the bulb of a radish, its leaves are edible and contain a lot of nutrients as well,” shares Patton.

Radish health benefits

Though the research around radishes is limited, they’re one of the many nutrient-rich foods you can eat. Patton offers a few ways the vegetable may benefit your health.

May support digestive health

Making radishes a part of a well-balanced diet can be a good way to reach your daily fiber goals. Fiber helps move food through your digestive system and supports regular bowel movements.

“Fiber bulks up and softens your stool, so eating vegetables, like radishes, regularly may help prevent constipation,” says Patton.

May support heart health

Some of the nutrients found in radishes — like calcium, potassium and vitamin C — may help lower blood pressure.

“Calcium helps relax your blood vessels, while potassium helps your body remove excessive sodium,” explains Patton. “And vitamin C helps fight inflammation, which can lead to hypertension.”

May help with blood sugar management

Radishes are considered a low glycemic index food and may help prevent spikes in blood sugar (glucose) levels.

While that sounds promising, there isn’t enough research on radishes and their connection to blood sugar to fully understand their effects.

“If you have diabetes or another condition that affects your glucose levels, you should talk to your healthcare team about adding radishes while continuing to follow the eating plan they recommended,” advises Patton.

Risks and precautions

In general, eating a 1/2-cup serving of radishes a day is considered safe.

It’s rare to have an allergic reaction to the root vegetable, but it does happen. Symptoms may include:

• Hives
• Swollen lips, tongue or face
• Vomiting and diarrhea
• Difficulty swallowing

These symptoms can be severe and possibly lead to anaphylaxis. Call 911 or go to the nearest emergency room.

How to incorporate radishes into your diet

Try using radishes in a few tasty ways:

• Slice into salads or serve with your favorite veggie dip.
• Pickle or add them to kimchi.
• Toss into stir-fries for a little crunch.
• Layer them onto burgers and sandwiches for a peppery kick.

“Enjoy radishes raw for a crunchy, zesty bite or cook them to mellow their peppery flavor,” says Patton.

Key takeaways

While more research is needed to fully understand how radishes may benefit your health, we know they can serve as a nutritious, colorful complement to many recipes.

“If you’re looking for another veggie option to include in your diet, try adding radishes,” encourages Patton. “It’s a healthy choice that’s not only low in calories, but also full of nutrients.”