Proposed plans for the mandatory labelling of GM foods do not go far enough, according to the Academy of Medicine . In a submission to the Environment and Food Bureau, the academy argued that the limit on labelling for GM content should be reduced to 1% from 5%. The academy admitted that it would be technically impossible to label all food items accurately as to GM content. It argued however that while the regulations may initially exclude pre-packaged or processed food, they should aim to cover all food products on the market within one or two years after the laws were passed.