>Soylent contains all of the nutritive components of a balanced diet, but with just a third of the calories... This worries me. It's not a misquote, either. From his blog^0 : >...I get all the nutrition and energy I need with about 1/3 the calories the average American consumes... The average American consumes 2,757 calories^2 . There's a term called the Basal Metabolic Rate. It is the amount of calories your body ne…
Actually there is a lot of evidence to show that calorie restriction can lead to longer lifespans. I'm not a nutritionist, doctor or someone who is on a calorie restriction diet (though I'm sure I eat less than the average American). http://en.wikipedia.org/wiki/Calorie_restriction
No clinical trial has been performed involving humans. Two trials have been performed involving primates, but have not demonstrated increases in median lifespan. A study of rhesus monkeys begun in 1987 by the National Institute on Aging published results in August 2012 that found evidence of health benefits, but did not demonstrate increased median lifespan.[2] A study by the University of Wisconsin beginning in 1989 is still ongoing.[1][3][4] Research on maximum life span in that study is still ongoing.