The healthiest fast food – what you should eat when you get hungry. Avocado Chili-Cheese Burger is the highest-calorie product on the fast food market.
A quarter of Germans don't eat fast food every week, but they eat it more often than once a month. With 1,042 kilocalories per serving, the McDonald's burger is the lowest calorie product in the world. An adult man should consume around 2,500 calories per day, according to the World Health Organisation.