The U.S. Food and Drug Administration (FDA) publicly released a letter that notified manufacturer Hain Celestial Group that the herb stevia—found in their teas—may be detrimental to drinkers’ blood sugar, reproductive, cardiovascular and renal systems. The FDA believes that despite stevia’s growing popularity among beverage manufacturers, scientific data to ensure its safety is lacking. No official statement has been released from the Hain camp.
