In the Blue Zone of Okinawa, Japan, locals drink green tea with jasmine flowers and turmeric called shan-pien, which translates to "tea with a bit of scent." David McLain/Courtesy of Blue Zones hide caption

itoggle caption David McLain/Courtesy of Blue Zones

A Hindu servant serves tea to a European colonial woman in the early 20th century. The British habit of adding tea to sugar wasn't merely a matter of taste: It also helped steer the course of history. Underwood & Underwood/Corbis hide caption

itoggle caption Underwood & Underwood/Corbis

An illustration from a book published in 1851 depicts the cultivation of tea in China. In the mid-19th century, China controlled the world's tea production. That soon changed, thanks to a botanist with a penchant for espionage. Internet Archive hide caption

itoggle caption Internet Archive

A pot of tea sits at the newly opened Teavana tea bar in New York City. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images

Kombucha made by artisan tea brewer Bill Bond in Akron, Ohio, comes in an array of flavors, such as lemongrass, ginger, blueberry and watermelon. Peggy Turbett/The Plain Dealer /Landov hide caption

itoggle caption Peggy Turbett/The Plain Dealer /Landov

What is a "tea blend?" Sasha/Courtesy of Adagio Teas hide caption

itoggle caption Sasha/Courtesy of Adagio Teas

Tea a dangerous habit? Women have long made a ritual of it, but in 19th century Ireland, moral reformers tried to talk them out of it. At the time, tea was considered a luxury, and taking the time to drink it was an affront to the morals of frugality and restraint. iStockphoto.com hide caption

itoggle caption iStockphoto.com

The Emperor's Himalayan lavender tea is popular at Washington, D.C.'s Park Hyatt Tea Room, but please don't put milk in it. Courtesy of Park Hyatt hide caption

itoggle caption Courtesy of Park Hyatt