TAIPEI (TVBS News) — More than half of beverages labeled "sugar-free" in Taiwan still contain measurable amounts of sugar, according to a report released Thursday (April 23). The study by National Taiwan University's College of Public Health (國立台灣大學公共衛生學院) also found that 85.6% of sampled drinks have higher total sugar content than indicated on their labels.
The findings reveal a gap between consumer expectations and product content in a category built on customization. While customers may choose "no sugar" or "half sugar" options, ingredients such as milk, fruit concentrates and toppings like tapioca pearls can still contribute significant amounts of sugar. The issue affects Taiwan's signature bubble tea industry, which has expanded globally.
A standard 700-ml (23.7-oz) "half sugar" drink contains an average of 46.5 grams of sugar, the study found. This approaches the daily recommended limit of 50 grams set by the World Health Organization (WHO). Researchers noted that even drinks marketed as healthier options can contain hidden sugars from various ingredients.
Researchers say the issue is not only the amount of sugar consumed but also how it is perceived. Drinks labeled "low sugar" or "sugar-free" may encourage more frequent consumption, particularly among younger consumers. Survey data shows that frequent consumers are often aged 18 to 39, with higher consumption among men.
The study also identified non-nutritive sweeteners, such as sucralose and acesulfame potassium, in some beverages. Regular intake of such additives may have implications for metabolism, though research is ongoing. These artificial sweeteners are often used to maintain sweetness while reducing calorie counts on nutrition labels.
Bubble tea, which originated in Taiwan, has become a global phenomenon, with rapid expansion across Asia, North America and Europe, according to Taiwan Trend Research (台灣趨勢研究). Its appeal lies in personalization that allows consumers to tailor sweetness and ingredients to their preferences. The industry continues to grow despite increasing scrutiny over health concerns.
Customization does not always guarantee transparency, the researchers noted. When sugar content is influenced by multiple ingredients, labeling may not fully reflect total intake. As demand for lower-sugar options continues to grow, improving labeling clarity and consumer awareness will be key to reducing potential health risks, they said. ◼