GM crops have only been around for 20 years, might there still be unexpected and untoward side effects?

Yes, there could be unexpected side effects from any new crop variety, GM or non-GM, as well as with any new agricultural practices. Risk assessment and appropriate testing of all new crops, along with on-going monitoring should mitigate the risks. 

GM crops are more extensively tested than non-GM varieties before release (see Q14) both for their environmental effects and as foods. They also tend to have fewer genetic differences from their predecessor than new non-GM varieties. 

See related questions

• Is it safe to eat GM crops?
• Could eating GM food have an effect on my genes?
• How are GM crops regulated?
• What about unforseen consequences of GM?

Page last updated: May 2016

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