Dr. Dravid and his team tested how different types of tea — black, white, oolong, green, rooibos, herbal, loose leaf and plain old Lipton — behaved in water with varying amounts of lead.

Herbalife is launching a new series of unique herbal blends for making tea in four refreshing flavors: natural tea flavor, raspberry, peach, and lemon, for preparing hot or cold drinks.

Herbal tea, or leung cha in Cantonese, is a concoction of medicinal herbs based on traditional Chinese medicine formulas. In 2006, herbal tea was selected as part of Hong Kong’s intangible ...