Bubble tea’s chewy pearls and sweet flavors mask a cocktail of potential risks, from heavy metal contamination and choking hazards to digestive trouble and kidney stones. With sugar levels rivaling soda and possible links to anxiety and depression, it’s a treat best enjoyed sparingly. Credit: Shutterstock Bubble tea shops are now nearly as common on British high streets as coffee chains, drawing crowds with colorful, photo friendly drinks in endless flavor combinations. The Taiwanese beverage,