Does yerba mate cause cancer?

Why Do Some People Say Yerba Mate Can Cause Cancer?

Yerba mate has been consumed safely for centuries, yet from time to time you may hear claims that it can cause cancer. This concern understandably raises questions, especially for people new to mate. The reality is more nuanced, and the risk is not about the plant itself, but how it is consumed.

Where the Concern Comes From

The cancer discussion around yerba mate comes from studies conducted in parts of South America where mate is traditionally consumed at extremely high temperatures and in large quantities over many years.

Researchers observed higher rates of esophageal cancer in populations that regularly drank mate that was nearly boiling hot. Importantly, these findings were not unique to yerba mate. Similar associations have been found with very hot tea and coffee.

Temperature, Not the Plant

The key factor is temperature. Repeatedly drinking liquids above roughly 149 degrees Fahrenheit can damage the lining of the esophagus over time. This chronic irritation may increase cancer risk regardless of whether the beverage is mate, tea, or coffee.

Yerba mate itself does not contain carcinogenic compounds when prepared properly. The issue arises when any beverage is consumed scalding hot, day after day, for years.

What Health Organizations Say

Major health organizations do not classify yerba mate as inherently carcinogenic. Instead, they warn against the regular consumption of very hot beverages in general.

This distinction matters. It means the concern is behavioral, not botanical.

How to Drink Yerba Mate Safely

Drinking yerba mate safely is straightforward and does not require giving it up.

Brew with water between 160 and 175 degrees Fahrenheit rather than boiling water. Allow the mate to cool slightly before drinking. Avoid sipping beverages that feel uncomfortably hot.

Cold-brewed yerba mate and tereré eliminate temperature concerns entirely and are popular traditional options in warmer climates.

Quantity and Moderation

Another factor in the studies was quantity. In some regions, people consume large volumes of mate throughout the entire day, every day, for decades.

Moderate consumption, similar to how most people drink coffee or tea, does not show the same associations. As with most things related to health, moderation matters.

Yerba Mate Compared to Other Drinks

It is important to note that coffee, tea, and other hot beverages carry the same temperature-related risks when consumed excessively hot. Yerba mate is not unique in this regard.

When brewed and consumed responsibly, yerba mate remains a clean, plant-based source of caffeine with antioxidants and other beneficial compounds.

Putting the Concern in Perspective

Headlines often strip away context, which is how a nuanced topic turns into a scary claim. Yerba mate has been safely consumed for hundreds of years across multiple cultures. The risk discussion centers on extreme habits, not everyday use.

If you drink mate warm instead of scalding, pay attention to temperature, and consume it in reasonable amounts, there is no evidence suggesting it is dangerous.

Final Sip

Yerba mate itself is not the problem. Drinking any beverage extremely hot, repeatedly and over long periods of time, is where risk can enter the picture. When prepared thoughtfully and consumed at safe temperatures, yerba mate remains a balanced, energizing drink with deep cultural roots.

At Heretic Yerba, we encourage brewing mate at proper temperatures and enjoying it intentionally. Clean energy should never come with unnecessary fear, only informed choices.