Aguaje is a fruit from a palm tree native to the Amazon and Cerrado regions of South America, prized as one of the richest natural sources of vitamin A ever identified. Known scientifically as Mauritia flexuosa and called buriti in Brazil, the aguaje palm produces scaly, reddish-brown fruits with bright orange flesh that have been a dietary staple for Amazonian communities for centuries. In recent years, aguaje has gained international attention as a supplement marketed for skin health, hormonal balance, and curves enhancement.
Where Aguaje Comes From
The aguaje palm grows in swampy, waterlogged areas throughout the Amazon basin and Brazilian Cerrado. It’s a towering tree, and because the species is dioecious (meaning individual trees are either male or female), only the female palms produce fruit. This detail matters because the most common harvesting method involves cutting down the entire female tree to reach the fruit clusters at the top, which has caused serious ecological damage across the region.
In Peru, aguaje is especially popular. The fruit is eaten fresh, blended into cold drinks, or turned into ice cream and popsicles. Beyond food, Amazonian communities use virtually every part of the palm for construction materials, fiber, fishing equipment, and even medicine. Fallen trunks serve as a breeding ground for edible palm beetle larvae, a protein-rich delicacy known as suri.
Nutritional Profile
Aguaje’s standout feature is its extraordinarily high beta-carotene content, the pigment your body converts into vitamin A. The fruit pulp and oil are also rich in fiber, minerals, and phenolic compounds with antioxidant and anti-inflammatory properties. Aguaje oil specifically contains about 33 mg of beta-carotene and 68 mg of vitamin E per 100 grams, along with 71% oleic acid, the same heart-healthy omega-9 fat found in olive oil.
That vitamin E concentration is notable. For context, sunflower seeds, one of the best common dietary sources, provide roughly 35 mg per 100 grams. Aguaje oil nearly doubles that. The combination of high carotenoids and vitamin E makes the fruit particularly interesting for skin and eye health, since both nutrients play protective roles against oxidative damage.
Proven Benefits for Eye Health
The most concrete clinical evidence for aguaje comes from its ability to reverse vitamin A deficiency. In a controlled trial in northeast Brazil, 44 children were given a buriti-based sweet over a follow-up period. Among 12 children who had Bitot’s spots, a hallmark sign of vitamin A deficiency that appears as foamy patches on the whites of the eyes, 10 saw the spots disappear completely. Liver stores of vitamin A also recovered: 9 out of 10 children with depleted stores returned to normal levels. Among the 32 control children who weren’t deficient, all six with borderline liver stores improved after eating the fruit.
These results led researchers to conclude that aguaje has “enormous potential in preventing vitamin A deficiency in Latin America and elsewhere.” The challenge is access. The fruit is consumed in meaningful quantities only by populations living near wild aguaje groves, and broader distribution would require organized cultivation.
Skin Protection From UV Damage
Aguaje oil has shown promise as a skin care ingredient, particularly for sun protection. Lab research on human skin cells found that emulsions made with buriti oil helped reduce damage from both UVA and UVB radiation. The oil’s high carotenoid and vitamin E content acts as an antioxidant shield, neutralizing the free radicals that UV exposure generates in skin cells. Keratinocytes, the cells that form your skin’s outermost barrier, responded especially well, showing greater cell survival than the deeper fibroblast cells.
Researchers described aguaje oil emulsions as potential vehicles for delivering antioxidants to the skin and as useful additions to after-sun formulations. It’s not a replacement for sunscreen, but it may complement sun protection by helping skin cells recover from UV stress.
The Phytoestrogen Question
Much of aguaje’s marketing revolves around claims that it enhances curves or promotes feminine body shape. This reputation traces back to the fruit’s phytoestrogen content. Researchers have isolated two specific compounds from aguaje pulp: lespeflorin G8 and 8-hydroxyhomopterocarpan. In lab tests, lespeflorin G8 acted as a full estrogen receptor agonist, meaning it mimicked estrogen’s effects on cells. It bound to estrogen receptors with a relatively high affinity.
What this means in practice is less clear. Cell-based assays show estrogenic activity, but no human clinical trials have demonstrated that eating aguaje or taking aguaje supplements produces measurable hormonal effects like fat redistribution or breast growth. The leap from “activates estrogen receptors in a petri dish” to “changes your body shape” is enormous, and the evidence simply isn’t there yet. People do report changes anecdotally, but placebo effects and concurrent lifestyle factors make those reports unreliable on their own.
Who Should Be Cautious
The same phytoestrogen content that drives aguaje’s popularity also raises legitimate concerns. Because the fruit contains compounds that act on estrogen receptors, people with estrogen-sensitive conditions should approach aguaje supplements carefully. This includes anyone with a history of hormone-receptor-positive breast cancer, endometriosis, or uterine fibroids. Some sources also note that the phytoestrogen content limits how much aguaje males should consume, though the threshold for any meaningful hormonal effect in humans hasn’t been established.
As a whole food eaten occasionally, aguaje is unlikely to cause problems for most people. The concern is more relevant for concentrated supplements, powders, and oils taken daily in higher doses, where the phytoestrogen exposure is more significant than what you’d get from snacking on the fruit.
How Aguaje Is Sold
Outside South America, aguaje typically comes in three forms: oil-filled softgel capsules, dried fruit powder, and pure aguaje oil for topical use. Capsule products commonly suggest two to three per day, taken on an empty stomach. Powdered aguaje can be mixed into smoothies or juice. The oil, because of its deep orange color and high vitamin E content, is sometimes used directly on skin or hair.
There are no standardized dosage guidelines backed by clinical research. The amounts in commercial supplements are based on traditional use and manufacturer recommendations rather than controlled human studies. If you’re trying aguaje for the first time, starting with a lower dose and observing how your body responds is a reasonable approach.
Sustainability Concerns
Aguaje’s popularity comes with an environmental cost. Because fruit grows at the top of tall female palms, harvesters in many areas simply cut the tree down. Over time, this has dramatically reduced the proportion of fruit-bearing female palms in wild groves, degrading one of the most carbon-rich landscapes on Earth: Amazonian peatland forests.
The alternative is climbing the tree to harvest fruit without killing it. Research published in Nature Sustainability found that areas where climbers harvest fruit have significantly more female palms remaining. The study estimated that if climbing replaced felling across the region, potential fruit production could increase by 51%, raising the crop’s gross value to around $62 million per year. Sustainable harvesting isn’t just an ecological preference. It’s also more profitable in the long run, since a living tree produces fruit year after year while a felled tree produces exactly one harvest.