Federal Dietary Guidelines
The U.S. Dietary Guidelines are published every five years after a panel of appointed experts convenes to review the latest nutrition science and determines what changes are needed to federal nutrition recommendations. In Canada, Canada’s Food Guide, is published as the government determines new science necessitates updates.
Since 1942, Canada has updated its federal dietary guidance eight times. Since 1980, the U.S. has updated its guidance seven times and an eighth revision is expected in late 2015. The U.S. frequency, unfortunately, doesn’t permit evaluation of a set of guidelines before new ones are written and some critics argue that the dietary guidelines have been ineffective in combatting problems like overweight and obesity.