The answer is not as simple as you might expect. In order to sustain our energy output, our genes remember the times when we needed a high intake of calories. Our ancestors had to spend hours in the fields laboring for their food, killing their game, and generally surviving off the land. In modern times, man can open the refrigerator and select from an array of sumptuous morsels with almost no expenditure of energy. As life becomes easier in terms of needed energy exertion for survival we will continue to see an increase in the weight of the Western World.
Food intolerance is a growing problem.
In addition, these empty foods contribute to the growing health concerns we all face today. Food intolerance disrupts our immune system. Add to that the overuse of antibiotics, coupled with the over-consumption of sugar and refined flours, and you have the makings of an overweight, unhealthy individual. The issue of food intolerance makes the question of which foods are good for you a difficult one. Each person has an individual makeup.