ACAI

EUTERPE OLERACEA. Family: ARECACEAE

The folk etymology says that chief Itaqui ordered all newborns put to death owing to a period of famine. When his own daughter gave birth and the child was sacrificed, she cried and died beneath a newly sprouted tree. The tree fed the tribe and was called açaí because that was the daughter's name (Iaçá) spelled backwards.

Its specific epithet oleracea means "vegetable" in Latin and is a form of holeraceusAcai berries are 1-inch (2.5-cm) round fruits that grow on acai palm trees in the rainforests of Central and South America. They have dark purple skin and yellow flesh surrounding a large seed. Because they contain pits like apricots and olives, they’re technically not a berry, but rather a drupe. Nevertheless, they’re commonly referred to as berries. In the Amazon rainforest, acai berries frequently accompany meals.

  To make them edible, they are soaked to soften the tough outer skin and then mashed to form a dark purple paste. They have an earthy taste that’s often described as a cross between blackberries and unsweetened chocolate. Fresh acai berries have a short shelf life and aren’t available outside of where they are grown. As an export, they are sold as a frozen fruit purée, dried powder or pressed juice. Acai berries are also sometimes used to flavor food products, including jellybeans and ice cream, while some non-food items like body creams contain acai oil. Acai berries have an incredibly high amount of antioxidants, edging out other antioxidant-rich fruits like blueberries and cranberries.

Acai’s antioxidant activity comes from several plant compounds, including anthocyanins. A 2020 study in 69 participants with overweight and dyslipidemia found that adding 200 grams of acai daily for 60 days to a calorie-restricted diet reduced oxidative stress and improved inflammation.

    They may improve cholesterol levels

A 2025 review of human studies suggests that acai could help improve cholesterol levels by decreasing total lipid levels.

While more research is needed, it’s possible that the anthocyanins in acai could be responsible for their positive impact on cholesterol levels, since studies have linked this plant compound to improvements in HDL and LDL cholesterol.

In addition, acai contains plant sterols, which prevent cholesterol from being absorbed by your body. It also contains phytosterols, another compound that may also reduce cholesterol absorption.

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They may have a possible anticancer effect

While no one food is a magic shield against cancer, some foods are known to stop cancer cells from forming and spreading. Animal studies have revealed this sort of anti-cancer effect in acai. In mice, acai pulp has reduced the incidence of colon and bladder cancer. However, a second study in mice found that it had no effect on stomach cancer. Researchers have concluded that acai could have a role in treating cancer in the future, yet more research is needed, including in humans.

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They could boost brain function

The many plant compounds in acai could also protect your brain from damage as you age. One of the ways in which the brain stays healthy is by cleaning up cells that are toxic or no longer working, a process known as autophagy. It makes way for new nerves to form, enhancing communication between brain cells. A 2025 study found that the pulp and seeds of acai may help prevent Alzheimer’s disease. A 2022 study in rats found that acai may be an effective supplement for vascular dementia. Another 2022 study found that acai may help improve memory retention.

As you age, this process works less efficiently. However, in lab tests, acai extract has helped stimulate this “housekeeping” response in brain cells.

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Possible drawbacks to acai berries

Given that acai is a healthy, antioxidant-rich fruit, there aren’t a whole lot of drawbacks to eating it. However, one word of caution is to not overestimate its associated health claims. While the initial research is promising, studies on its effects on human health have been small and scarce. Therefore, it’s important to take the health claims with a grain of salt. Also, keep in mind that if you’re buying it as a pre-processed pulp, check the ingredient label and make sure it doesn’t have added ingredients. Some of the purées have a very high amount of added sugar. Moreover, the NIH National Center for Complementary and Integrative Health notes that consuming acai may affect the results of an MRI in the gastrointestinal tract. If you are scheduled for an MRI, check with your healthcare provider to determine if it is safe to use acai products.

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How to eat acai

Since fresh acai berries have a short shelf life, they’re mainly exported and widely available in three main forms — purées, powders and juices. The juice is loaded with antioxidants, but it’s also the highest in sugar and lacking in fiber. Although, if filtered, the juice may contain fewer antioxidants. The powder delivers the most concentrated amount of nutrients, giving you fiber and fat, as well as plant compounds. That being said, the purée is probably the best way to enjoy the flavor of acai berries.

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