Liz the Squeak makes the comment that junk foods can be cheaper, comparing the price of McDonald burger with a Sainsbury's salad bowl. However, the quality of the food is measurably different! At least the salad bowl is natural, compared with the eyelid and foreskin burger of the Big Mac. Alternatively, why not save money by buying the ingredients (salad vegetables) and making your own? Why pay for someone else's labour?
In the 1960's the two most feared words were "nuclear" and "bomb". Today those words are "health" and "safety".