Juice benefits vs. juice drawbacks: Here's what health watchers are starting to discover

Juice is having another wellness moment, but the nutrition picture is messier than the marketing suggests. Dietitians and doctors say 100% fruit and vegetable juice can deliver real health benefits, though the tradeoffs matter, especially around sugar, fiber and blood sugar.

Is 100% fruit juice actually good for you?

Yes, 100% fruit and vegetable juice can deliver real nutrients, including vitamins, minerals and plant compounds, but it’s lower in fiber and higher in sugar than whole fruit, according to registered dietitians.

An 8-ounce glass of orange juice provides over 100 percent of the daily recommended vitamin C for adults, registered dietitian Amy Davis, RDN, told Real Simple. Grapefruit juice offers vitamin C and potassium, pomegranate juice contributes potassium plus small amounts of vitamin K, and prune juice supplies potassium along with some vitamin K. Fruit juice also retains phytochemicals from the whole fruit, including flavonoids, polyphenols, anthocyanins (especially in grape and cherry juice) and carotenoids (especially in orange juice).

What vitamins are in orange juice and other fruit juices?

Different 100% juices deliver different nutrients. Orange juice is a top source of vitamin C, folate and potassium, while grapefruit, pomegranate and prune juice each contribute potassium along with other vitamins.

“Orange juice is famously known to be a great source of vitamin C, providing over 100 percent of the daily recommended intake for adults in an eight ounce serving,” Davis said. Because juice is mostly water, it also contributes to daily fluid intake while supplying nutrients that plain water doesn’t provide. That makes it a useful hydration option for people who struggle to drink enough water, though the calories add up quickly across multiple glasses.

Does drinking juice spike your blood sugar?

Fruit juice can raise blood sugar quickly because it lacks the fiber found in whole fruit, though the effect varies by juice type.

“Unlike whole fruit, fruit juice is low in fiber. During processing, the juices are extracted from the fruit, and the remaining flesh and fiber are discarded. Fiber helps manage your blood sugar levels by slowing the absorption of sugar into your bloodstream. Without fiber, sugar can easily enter your blood and lead to a rapid spike in blood sugar and insulin,” Katey Davidson wrote for Healthline. In an article for Health, C. Vivek Lal, M.D., director of clinical innovation at the Heersink Institute of Biomedical Innovation, said, “We will often see clear juices, like grape and apple juice, spike blood sugar more, while the more pulpy juices, such as orange and grapefruit juice, and veggie-forward juices, have a gentler effect.”

What are the health benefits of carrot juice?

Carrot juice can support immunity thanks to its vitamin C content, according to registered dietitians who work with vegetable-forward drinks.

“Carrot juice provides an excellent amount of immunity-helping vitamin C,” Amy Gorin, M.S., R.D.N., owner of Plant-Based with Amy in New York City, told Prevention. Vegetable-forward juices like carrot also tend to have a gentler effect on blood sugar than clear fruit juices such as apple or grape, Lal said. That makes carrot juice a reasonable pick for people who want the nutrient boost of juice without the sharper glucose response of sugarier options. Portion still matters, because calories and natural sugars accumulate quickly across servings.

Is fruit juice as healthy as eating whole fruit?

No, whole fruit generally offers more fiber and fewer calories per serving than fruit juice, even when the juice is 100% and not from concentrate.

“Orange juice is considered high in calories and sugar, with 110 calories and 21 grams of sugar (even if it is naturally-derived) in 8 ounces, and is very low in fiber compared to the whole fruit,” Davis said. That fiber gap matters because fiber slows sugar absorption and helps keep you full for longer. For most people, dietitians recommend treating 100% juice as a supplement to a balanced diet rather than a stand-in for whole produce.

This article was created by content specialists using various tools, including AI.