How many calories per day do you need to survive?

Answer 1

i think you about 2000 per day idk

From biovmr121108: Between 1500 and 2500, but see below.

This depends on your mass and necessary activity level, since each unit of mass ( kilograms, or whatever you wish) requires calories to both remain living and to function at a given level (for example, muscle tissue or your brain).

Setting aside the important point of what the calories consist of (vitamins, minerals, etc.), an average American female (5'4", 164 lbs) needs just under 1500 calories per day for a very sedentary existence (i.e., just surviving WHILE maintaining the SAME MASS).

The typical American male (5'9 1/2", 191 lbs) would need 2430 calories daily to survive or "Maintain".

To just stay alive, it really becomes a matter of how many calories below these numbers each day and how long the reduced calories are endured.

For example, reducing the calorie intake by 500 per day would reduce the body mass by about 2 kilos per month, or 1 lbs per week (all things remaining equal).

Once body fat reduces drastically, the remaining portions of the body would be consumed by the most vital organs/systems until enough damage occurred to cause cardiac arrest directly (likely), or contraction of a common illness which would in the body's weakened condition lead to other complications and death (more likely).