Our reality is very much driven by the foods we consume.
Most of us eat diets that are too heavy for our system--processed foods, too much fat, sugar, etc. In the classic macrobiotic cookbook "The Self Healing Cookbook," Kristina Turner says that people eat fat to emotionally buffer themselves from the harsher aspects of life, and that it is something we do to survive modern life.
I think we eat food that we know is bad for us because it enables us to get through a day that we aren't into--a rude awakening by the alarm clock, rushing around, meetings, and projects at work we don't always agree with. I had a job where I was frequently on deadline to produce copious amounts of work, and on those days I always craved the same thing--an Italian sandwich from Subway, a bag of Doritos, and a diet Coke.
Have you ever tried to eat a simple, whole foods, non-caffienated diet? Something changes in you, you don't have that "rush" that allows you to work at a ridiculous pace.
In her book "Super Cleanse," Adina Niemerow, a health food chef, talks about clients who attend her cleansing retreats. They eat fresh, organic foods with little adulteration. After unpleasant withdrawal symptoms, the people often have big realizations that they are living lives they don't always agree with. People have thoughts like, "why am I investing in a company that dumps oil in the ocean or contributes to the weapons industry?" Or "why am I marketing director for a company that sells a product I don't believe in?" Some of these people change their careers entirely, beginning nonprofits or going back to school to become naturopaths or something similar.
There is some energetic component of food that makes people think or act a certain way. Heavier, processed foods enable us to either get through jobs we're not into, or if we are into them, to work at an unhealthy pace. Lighter, unprocessed foods force reflection, and make it impossible to work at the same pace.
So if U.S. culture is moving towards shopping at Whole Foods, buying organic, and thinking about nutrition, we are also moving towards some consciousness shift where the career culture will soon look very different.