Everyone knows the legend of Leonidas and his brave 300, dying in glory against the unending onslaught of the Persian Empire under Xerxes. It has been immortalised in songs, poems, books for millennia, and then of course a very successful film.
There is almost an unimaginable number of foods in the world and of that unimaginable number, an unfathomable amount of variety exists. We not be able to eat them all, in fact some estimates put the number as low as 20,000, but about 20 species of plant (0.1%) make up 90% of our diet. These twenty plants could be described as a monoculture and they could very well spell our doom.
Since the 1980s, meal replacement drinks have been pitched to use as the be all and end all of weight loss. Lately, that focus has shifted, focusing instead on the time saving and cost effectiveness benefits of drinking your dinner.