Pop into your local supermarket and you'll see plenty of people studying the labels to gauge which food is the healthiest, lowest in fat or least calorific.
But I think they're missing the point.
Rather than obsessing over every dish's fat and sugar content, we need to get back in touch with savouring food; a far better solution to the crisis of obesity and illness through poor diet.
We need to stick to this simple framework: your meals should contain a protein (lean meat, fish, chicken, maybe lentils or beans), a carb (pasta, rice, potatoes, bread), vegetables, fruit and a little dairy (cheese, yoghurt).
Processed foods, anything we don't make ourselves - biscuits, cakes, chocolates, cream sauces, pastries, pies - should be eaten in only small amounts and considered a treat, not the norm.