A new report from Mintel reveals that almost 50% of adults consider GM foods to be the most worrying food safety concern. The hardening of public opinion on the issue of GM foods is highlighted, concern levels increasing by a significant 11 percentage points in just 8 months. In 1998, 36% of consumers found genetically modified food to be the food issue which they were most concerned about, this rose to 47% in 1999 - revealing how rapidly the debate over food safety has shifted in such a short period of time. Objection to GM foods is heightened by almost a fifth of adults who stated that they would never "knowingly eat or feed their family" anything containing genetically modified foods.