Oranges Offer More Than Just Vitamin C, Experts Say

This everyday citrus supports immunity, digestion, heart health, and blood sugar—especially when eaten whole.

Feb. 1, 2026 at 12:23pm

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Nutritionists say oranges are rich in a variety of beneficial nutrients beyond just vitamin C, including fiber, flavonoids, carotenoids, and potassium. These nutrients support gut health, heart health, and blood sugar balance. Whole oranges are recommended over orange juice, as the fiber in the fruit helps slow digestion and prevent blood sugar spikes. Oranges can be a nutritious addition to many diets, especially for athletes, older adults, and those with digestive concerns.

Why it matters

Oranges are often typecast as just a source of vitamin C, but nutrition experts say the fruit offers a wide range of health benefits due to its unique blend of fiber, plant compounds, and micronutrients. Understanding the full nutritional profile of oranges can help people incorporate this versatile citrus into their diets in ways that support overall health.

The details

Oranges contain flavonoids like hesperidin that provide anti-inflammatory and heart health benefits, as well as carotenoids that support vision and immune function. The fruit is also a good source of potassium, which is important for nerve and muscle function, and folate, which is crucial for cell growth. The fiber in whole oranges helps slow digestion and maintain steady blood sugar levels, unlike orange juice which can cause faster absorption and blood sugar spikes. Nutritionists recommend pairing oranges with protein or healthy fats to further stabilize blood sugar and provide longer-lasting energy.

  • Oranges are available year-round, with peak season typically running from winter through early spring.

The players

Adiana Castro

A metabolic dietitian and owner of Compass Nutrition in New York City.

Mascha Davis

A Los Angeles-based registered nutritionist and author of "Eat Your Vitamins".

Kaitlyn Hempfling

An integrative and functional dietitian based in New York City.

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What they’re saying

“The most abundant flavonoid in oranges is hesperidin, which is known for its anti-inflammatory and heart health benefits.”

— Kaitlyn Hempfling, Integrative and functional dietitian (marthastewart.com)

“Carotenoids, which give oranges their color, also matter: they reduce inflammation and help with vitamin A production, which is vital for vision and immune health.”

— Kaitlyn Hempfling, Integrative and functional dietitian (marthastewart.com)

“Potassium plays a role in maintaining healthy blood pressure, while folate is integral to cell growth and is especially important during pregnancy (and childhood).”

— Mascha Davis, Registered nutritionist and author (marthastewart.com)

The takeaway

Oranges are a nutrient-dense fruit that offer benefits beyond just vitamin C, including supporting gut health, heart health, and blood sugar control. Incorporating whole oranges into a balanced diet can be a simple way to boost overall health and nutrition.