Does The Food We Eat Affect Our Productivity?

According to the flagship study released on the subject by the International Labour Organization (ILO) in 2005, our nutrition habits have a direct impact on our productivity. In fact, the World Health Organization says that adequate nourishment can raise national productivity levels by 20 percent! This begs the questions: What foods are brain foods and drain foods? And how can employees be encouraged to pursue a healthy diet?