Help please! is eating less than 1000 calories a day harmful for you?

GoalsReasonsHowLong?: Goals? As adapted omnivores, humans are generally good at surviving up to months without food, depending on a huge number of variables. Calories are units of heat to warm h20 as measured in a calorimeter, not by eating & routinely guessed for lower costs, per usual practices. Study: http://en.Wikipedia.Org/wiki/calorimeter, nusi.Org, lustig, taubes, attia, enig, dietdoctor & my answers healthtap.