Nutritionists and dieticians are assessing the health impacts of matcha as the drink sees a significant rise in popularity across the United Kingdom.

The trend is driven by a surge in consumption, with approximately 1.6 million units of matcha sold in the UK last summer [1]. As the product moves from niche health stores to mainstream supermarkets, experts are weighing the benefits of its nutrient profile against potential safety concerns.

Specialist dietician Nichola Ludlam-Raine and nutritionist Lauren Manaker, M.S., RDN, said the drink's chemical composition is key. Matcha is packed with antioxidants, specifically catechins [2]. These compounds are widely recognized for their role in supporting overall health when the tea is consumed in moderation.

However, the health profile is not without complications. While some sources emphasize the supportive nature of the drink, others point to risks associated with high-volume intake. These concerns include the effects of excess caffeine, and the possibility of heavy-metal contamination in some tea leaves.

The debate centers on the dosage and sourcing of the powder. Because matcha involves consuming the entire leaf rather than just an infusion, the concentration of both nutrients and contaminants is higher than in traditional green tea.

Market data from Square indicates the scale of the trend in the UK [1]. This rapid adoption has prompted a closer look at whether the perceived health benefits outweigh the risks of daily, high-volume consumption.

“Around 1.6 million units of matcha were sold in the UK last summer.”

The tension between matcha's antioxidant benefits and its risk of heavy-metal contamination reflects a broader challenge in the functional food market. As consumers shift toward 'superfoods' for preventative health, the lack of standardized regulation on contaminant levels in imported tea powders creates a gap between perceived wellness and actual safety.