02 Jun 2017 --- Research has shown the potential health benefits of bioactive nutrients, and consumers are showing an increased interest in learning more. But can there be too much of a good thing? John Erdman, a professor emeritus in the Department of Food Science and Human Nutrition at the University of Illinois, and a team of other scientists want to see recommended maximum intake levels established by public health officials to help educate people about what they should be consuming. Such guidelines are needed whether bioactive nutrients are consumed from fruits or vegetables as part of a healthy diet, or from supplements derived from those foods.