Healthy food at a low cost

The effect of hundreds of books, magazine articles, and television programmes on nutrition has been negligible. In our days, the great majority of the population continues to eat in ways that sharply increase their risk of major illness and shorten their lifespan.

Social scientists have come up with three explanations for this fact, but are still discussing which one is exact. To make things worse, these three theories leave us little margin to react:

1.- IT IS TOO COMPLICATED. Nutrition advice, some argue, is so abstruse that will always remain dry and unappealing to most men and women. Recondite knowledge is destined, by its very nature, to the chosen few. In other words, this is how it is and there is no way around that.

2.- IT IS TOO IMPRACTICAL. After reading a nutrition or weight-loss book, motivation lasts only for a couple of weeks, others sustain. The whole advice is so impractical that cannot be implemented by anyone leading a normal life. It is as though you expected everybody to be interested in growing tomatoes on his windowsill. Who on earth can spare the time and energy to do that?

3.- IT IS TOO CONTRADICTORY. The advice you read in one book is quickly contradicted by the next publication or television programme. Was nutrition not supposed to be an empirical science? How come that experts cannot agree on whether you should ban chocolate from your diet?