this seems like two different questions - which foods would i choose to live on, and which are the most nutritionally dense.
beef liver will win the contest for most nutritionally dense. throw in kale, and you have a 1-2 combo that's impossible to top.
i would not live on those two foods, however.
"dean ornish and dr. davis think the palmitic acid our bodies use for fuel while we sleep is poison if we eat it. zero-carbers like charles washington think the oldest fuel in our evolutionary history – glucose - used by organisms a billion years ago and without which the brains of modern mammals cannot survive for more than a few minutes – is an unnatural toxin if you eat it. both views ignore basic facts of medical physiology and defy evolutionary history." - kurt harris