I know i said physical effects, but i think one should consider the social effects too - awkward situations such as a meal at a friends house where you have to refuse the food on account of your crisp diet, not to mention the constant noise pollution of your chewing.
On another note, are there particular flavours which should be avoided if following this diet - i hear prawn cocktail is pumped with bad additives? If you were on the diet, what would the recommended daily intake be (in 25g bags), in order to maximise survival but minismise scurvy?
Interesting...