content: Expain obese homeless people  Sugar, wheat, oil, and corn. Very simple, cheap, and abundant ingredients (and in the case of oil, a cheap processing method) found in every meal created with a profit margin and mass production in mind. These foods, are arguably, recent additions to the sapien diet. Sugar and carbohydrates are rare in nature. Yet, now they are everywhere. The sugars and carbs charge their recipes will high loads of energy without satiting the hunger. The consumers of these foods keep eating more and more without controlling themselves to satite their appetite, eventually pushing past 3000 calories. Which without gruelling exercise, will have to be stored as fat.