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Agave nectar

What it is, production, effects on blood sugar, and dangers

The “natural” sweetener agave nectar is often mistakenly considered healthy. But the truth is, this sweetener is even worse than regular sugar.

This article is based on scientific evidence, written by experts, and fact-checked by experts.
We look at both sides of the argument and strive to be objective, unbiased, and honest.
Agave nectar: A sweetener that’s even worse than sugar?
Last updated on July 16, 2023, and last reviewed by an expert on August 24, 2022.

The harmful effects of sugar are among the few that most health experts agree upon.

Agave nectar: A sweetener that’s even worse than sugar?

Because many health-conscious people try to avoid sugar, many other natural and artificial sweeteners have become popular.

One of those is agave nectar, which is often referred to as agave syrup. It’s found in various health foods and marketed as a natural, diabetic-friendly sweetener that doesn’t spike your blood sugar levels.

However, this article explains why agave nectar may be worse for your health than plain sugar.

In this article

What is agave?

The agave plant is native to the Southern United States and Latin America.

Although agave is a new phenomenon in the West, it has been used in Mexico for hundreds — and perhaps thousands — of years.

Traditionally, agave was believed to have medicinal properties. Its sap was also boiled to produce a sweetener known as “miel de agave”.

The sugars in agave are also fermented to make tequila.

Tequila is the most common commercial use of agave today and one of Mexico’s best-known exports.

Like many plants, agave likely has some health benefits.

However, refining and processing tend to destroy some — or all — of these beneficial health effects. The refined agave sweetener that people consume today is no exception.

Summary: Agave is a desert plant harvested to make tequila and sweet syrup. It was traditionally believed to have healing properties.

How is agave nectar made?

The sweetener commonly sold as agave nectar would be more accurately labeled as agave syrup.

It has little in common with the traditional sweetener made by people in Mexico.

That said, the beginning of its production process is the same. The plant is first cut and pressed to extract the sugary sap.

While this sap is high in sugar, it also contains healthy fiber like fructans, which are linked to beneficial effects on metabolism and insulin.

However, when processed into a syrup, the fructans are extracted and broken down into fructose by exposing the sap to heat and/or enzymes.

This process — similar to how other unhealthy sweeteners like high fructose corn syrup are made — destroys all of the health-promoting properties of the agave plant.

Is fructose bad for you?
Suggested read: Is fructose bad for you?

Summary: The agave sweetener sold today is made by treating agave sugars with heat and enzymes, destroying all potentially beneficial health effects. The end product is a highly refined, unhealthy syrup.

Agave nectar only minimally affects blood sugar levels

The glycemic index (GI) measures how quickly a food’s sugar enters your bloodstream.

Generally speaking, foods with a higher GI cause more significant blood sugar spikes and may affect your health more negatively.

Unlike glucose, fructose does not raise blood sugar or insulin levels in the short term.

This is why high fructose sweeteners are often marketed as “healthy” or “diabetes friendly.”

Agave nectar has a very low GI — primarily because almost all of its sugar is fructose. It has very little glucose, at least compared with regular sugar.

A study in mice compared the metabolic effects of agave nectar and sucrose, or plain sugar, after 34 days. The mice ingesting agave nectar gained less weight and had lower blood sugar and insulin levels.

In such a short-term study, the glucose in plain sugar elevated blood sugar and insulin levels, whereas fructose did not.

That said, the GI is just one factor to consider when weighing the health effects of sweeteners.

The harmful effects of agave — and sugar in general — have very little to do with the glycemic index but everything to do with the large amounts of fructose — and agave nectar is very high in fructose.

Suggested read: The 6 best sweeteners on a low-carb keto diet (and 6 to avoid)

Summary: Agave nectar is low in glucose and therefore doesn’t spike blood sugar levels much. This gives the sweetener a low glycemic index.

Agave nectar is dangerously high in fructose

Sugar and high fructose corn syrup (HFCS) contain two simple sugars — glucose and fructose — at about 50% each.

Although glucose and fructose look similar, they have entirely different effects on your body.

Glucose is an incredibly important molecule. It’s found in many healthy foods, such as fruits and vegetables, and your body even produces it to ensure you always have enough.

All living cells harbor glucose because this molecule is vital to life.

Whereas every cell in your body can metabolize glucose, your liver is the only organ that can metabolize fructose in significant amounts.

Consuming excess added fructose can wreak havoc on your metabolic health and may contribute to insulin resistance, metabolic syndrome, heart disease, and type 2 diabetes.

This is because your liver gets overloaded and turns the fructose into fat, raising blood triglycerides. Many researchers believe that some of this fat can become lodged in your liver and cause fatty liver disease.

This can cause significant increases in long-term blood sugar and insulin levels, raising your risk of metabolic syndrome and type 2 diabetes.

Moreover, high fructose intake can increase your levels of LDL (bad) cholesterol and oxidized LDL. It may also cause belly fat accumulation.

Remember that agave nectar is about 85% fructose — a much higher percentage than plain sugar.

None of this applies to whole fruits, which are loaded with fiber and make you feel full quickly. Your body is well equipped to handle the small amounts of fructose found in fruit.

Suggested read: 5 natural sweeteners that are good for your health

Summary: Because agave syrup is much higher in fructose than plain sugar, it has more tremendous potential to cause adverse health effects, such as increased belly fat and fatty liver disease.


If you must add extra sweetness to your diet, agave nectar is likely not the way to go.

Several natural sweeteners — including stevia, erythritol, and xylitol — are much healthier choices.

Agave nectar may be the least healthy sweetener in the world, making regular sugar look healthy.

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