Harvard Doctor: Matcha May Help Stave Off Cancer

As of August 2025, matcha, a finely ground powder of green tea, has been experiencing a surge in popularity worldwide. Once a humble drink revered in traditional Japanese tea ceremonies, matcha is now praised by health-conscious consumers and influencers alike for its unique flavor profile and potential health benefits.

Adding to matcha's allure, a Harvard-trained gastroenterologist based in San Francisco, Dr. Sauarbh Sethi, claims the beverage could help stave off cancer. Dr. Sethi explains that matcha is a powerful source of antioxidants, particularly catechins, which have been shown to promote heart health, cognitive function, and potentially inhibit tumor growth.

Previous studies have suggested that catechins found in green tea may help prevent the spread of certain cancers, such as colon cancer. Researchers from the University of Salford in the UK have also found that matcha "is indeed sufficient to inhibit the propagation of breast cancer stem cells" and "may help to overcome cancer cell resistance to chemotherapy."

While some experts remain cautious about the claims, the matcha market has continued to grow, with sales in the US reaching over $10 billion in the past 25 years. As the demand for this green superfood increases, more research is expected to uncover the full extent of matcha's potential health benefits.