What is pijuayo?

Pijuayo is the orange fruit of a tall, spiny Amazon palm, Bactris gasipaes. It is eaten as a food, not taken as a medicine. In Peru, Ecuador, Colombia and Brazil the fruits are boiled in salted water, then peeled and eaten warm.

The fruit is starchy and oily, a little like a chestnut crossed with a sweet potato. It is deeply orange because it is rich in carotenoids, the plant pigments the body can turn into vitamin A. The same palm gives palmito, the pale heart of palm sold in tins.

Here is the honest verdict. Pijuayo is a genuinely nutritious staple food, and that part is not in doubt. But it has barely been tested in people as a treatment for anything, and long traditional use is not proof that it works or that it is safe.

One rule matters more than any claimed benefit. The fruit is always cooked before eating, because the raw pulp irritates the mouth and throat.

How does pijuayo work?

Most of what pijuayo does is simple nutrition rather than drug-like action.

It is a dense source of energy from starch and oil. It also carries a large amount of beta-carotene and other carotenoids. Your body converts some of that beta-carotene into vitamin A, which the eyes and skin need.

That conversion is well established in people in general, from many foods. Studies in Latin America have measured how much carotenoid pijuayo holds, and the levels are high. Whether eating it reliably corrects a vitamin A shortfall has not been settled by trials.

The fibre in the fruit adds bulk to stool. This is the ordinary effect of any high-fibre food, not something special to this palm.

In laboratory tests, extracts of peach palm fruit and oil show antioxidant activity. That means they mop up reactive molecules in a test tube. Whether this changes anything inside a human body is not known.

Some animal and cell work on the oil suggests effects on blood fats. These findings are early. They should not be read as proof of a benefit in people.

Raw pijuayo contains substances that block a digestive enzyme and sharp crystals that sting the mouth. Boiling breaks these down. That is why the cooking step is a safety measure, not a matter of taste.

What forms does pijuayo come in?

You will meet pijuayo mainly as a food, not a capsule.

- Whole boiled fruit, sold warm by street vendors across the Amazon. - Pijuayo flour, made from dried pulp and used in breads and porridges. - Peach palm oil, pressed from the pulp, used for cooking and in some cosmetics.

- Chicha or juice, a thick drink made from the mashed cooked fruit. - Palmito, the heart of palm, tinned or fresh, which is a different part of the plant. - Animal feed, which uses large volumes of the crop.

Standardised extracts and dosed supplements are rare. If you find one, it is unlikely to be tested for any medical claim.

Where it comes from:

Pijuayo is one of the oldest crops of the American tropics. Indigenous peoples of the western Amazon domesticated it thousands of years ago, long before European contact.

It was a staple. Families stored the boiled fruit, dried it, and fermented it into chicha for feasts. Spanish chroniclers in the sixteenth century described groves of the palm around villages.

Traditional use centred on food and strength. The fruit was given to workers, to nursing mothers, and to children who were thin or recovering from illness. Some communities linked it to good eyesight, which fits its deep orange colour.

Healers also used other parts. The spiny trunk and leaves were used for building and weaving rather than medicine.

These are records of custom, not of tested treatment.

What does pijuayo help with?

• General nutrition and energy in the diet: This is the use with the firmest ground under it. Pijuayo is a dense source of starch, oil and some protein. Food composition studies in Peru, Costa Rica and Brazil back this up. It is a real staple food, as rice or plantain is. That is a nutrition fact, not a health claim. No trial shows it beats other staple foods for any outcome.
• Dietary vitamin A intake: The fruit is unusually rich in beta-carotene, which the body turns into vitamin A. Health programmes in the Amazon have promoted it for this reason. Vitamin A deficiency is a real and serious problem, and carotene-rich foods help prevent it. That general link is well established in people. What is missing is trial evidence for this fruit in particular. No controlled study shows that eating pijuayo corrects deficiency. If a doctor has diagnosed vitamin A deficiency, treat it with the care they prescribe.
• Constipation, as a high-fibre food: Tradition treats the boiled fruit as good for a sluggish gut. The fibre content makes this plausible. Any high-fibre food can soften and bulk stool, and fluid helps. There is no study of pijuayo for constipation in people. Do not use it in place of treatment for constipation that is new, painful or lasting.
• Feeding during recovery or weight gain: The fruit was traditionally given to people who were thin, ill or breastfeeding. It is calorie-dense, so it does add energy to a meal. That is simply what a starchy, oily food does. No trial has tested it for recovery or growth. Weight loss that you did not plan needs a doctor, not a food.
• Traditional support for eyesight: Some communities linked the orange fruit with good vision. Vitamin A does matter for sight, so the idea has a thread of logic. But no study has tested pijuayo on eyesight in people. Blurred vision, night blindness or eye pain are reasons to see an eye doctor promptly.

Which foods are rich in pijuayo?

Pijuayo is itself a food, so there is no list of other foods that contain it. It is often eaten with salt, honey or mayonnaise, or mashed into a drink. Eating it with a little fat helps your body absorb the orange pigments.

What are the side effects of pijuayo?

• Mouth, lip and throat irritation or burning if eaten raw or undercooked
• Gas, bloating or loose stool from the fibre and starch, especially in large amounts
• Yellow-orange tint to the skin, especially the palms, after a lot of carotene-rich food
• Choking risk from the large single seed, mainly in young children
• Stomach discomfort from the oil in sensitive people
• Allergic reaction, which is rare but possible with any plant food

Good to know:

For cooked fruit eaten as food, side effects are mild and uncommon.

The main real problem is eating it raw. The raw pulp stings the mouth and throat, and that is why it is always boiled first.

The orange skin tint from carotene is harmless and fades when you eat less. It is not jaundice, which yellows the whites of the eyes and needs a doctor.

How much pijuayo should you take?

• Recommended daily: Pijuayo is a food, so there is no set dose. A common serving in the Amazon is a few boiled fruits, eaten as a snack or alongside a meal. Peach palm flour is usually used like any other flour, a few spoonfuls in a recipe. Oil is used as a cooking oil. This describes normal eating habits. It is not an amount chosen for you. If a supplement label gives a figure, that figure is not backed by trials in people.
• Best time of day: Timing does not matter. It is eaten whenever other food is eaten, often as a mid-morning or afternoon snack.
• With or without food: It is food. The carotenoids are fat-soluble, so a little oil or a meal with fat helps your body absorb them. The fruit already contains oil of its own.
• Time to effect: Expect nothing medicinal. As a food it fills you up within minutes, like any starchy meal. Fibre effects on the bowel may show within a day or two. For any claimed health benefit, there is no honest answer, because it may do nothing at all.
• How long to take it: As a food, it can be part of the diet for as long as you like, the way plantain or sweet potato can. There is no tested course length, because there is nothing tested to take a course of. Do not eat large amounts daily hoping to treat a diagnosed illness.