Does a Common Ingredient in Energy Drinks Really Fuel Blood Cancer?

By Ana-Marija Dolaskie — May 21, 2025
Taurine is a popular ingredient found in many energy drinks, like Monster and Red Bull. It's also abundant in our food: the average adult diet provides between 40mg and 400mg of taurine daily. A new study from the journal Nature claims taurine may fuel the growth of leukemia cells in the body. Is this true? Let's break it down with our experts.

While the findings sound alarming, it's not that rare. Many common substances, like sugar, caffeine, soy, and even vitamin E, when fed to cancer cells in high concentrations, have been shown to promote cancer growth. This becomes irrelevant under physiological conditions, also known as 'real life.'

Taurine is an amino sulfonic acid, made in the body from the amino acid cysteine. It's both naturally produced in the body and also abundant in foods. Energy drink companies market taurine as an enhancer of physical endurance and mental sharpness. It's also been used as a supplement to offset chemotherapy side effects.

ACSH Director of Chemical & Pharmaceutical Sciences Dr. Josh Bloom says it's important to note that taurine hasn't been linked to causing cancer, and the context of the latest study is important. 

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