People who want to lose weight should maintain a diet that’s high in protein with more lean meat, low-fat dairy products, beans, and fewer finely refined starch calories like white bread and white rice, e! Science News reports. The world’s largest diet study, undertaken by researchers at the University of Copenhagen, showed that, with this diet, it’s possible to eat without counting calories or gaining weight if one eats until he’s full. Official dietary aren’t sufficient to prevent obesity, it concludes. The study looked at five diet types, and found that a high-protein, low-glycemic index diet works best.