Watchdogs say regular long-term consumption of CBD is ‘potentially harmful’ to the liver and thyroid. CBD brands in the UK include Cannaray, promoted by Claudia Winkleman (pictured).Watchdogs say regular long-term consumption of CBD is ‘potentially harmful’ to the liver and thyroid. CBD brands in the UK include Cannaray, promoted by Claudia Winkleman (pictured).Read MoreHealth News | Mail Online