Everybody requires
a minimum number of calories to live.
Both planning patterns do call for the same
minimum number of calories and fat < 30 % and saturated fat < 10 %.
Then you have to consider
the minimum number of calories the USDA says your school must offer little Jimmy at lunch.
Not exact matches
Because a nursing mom needs extra energy to make milk, the
minimum daily
number of calories suggested for lactating women comes to 2,000
calories.
It is believed that this is the optimal
number of calories for muscle growth and
minimum fat gain.
Because half
of us need more protein than that average
minimum, a safe
number to shoot for is around 8 - 10 %
of total
calories.
If you are eating a low
number of calories, you might want to weigh and record everything you eat and then calculate whether you are meeting the
minimum protein intake requirements (I believe 45 - 50g / day).
But some forget that we still need a
minimum amount
of calories everyday in order to be healthy and they try to overcompensate with vastly reducing the
number of calories they intake.
The table below shows what 0.7 g / kg LBM (which provides
minimum levels
of satiety) looks like in terms
of a
number of different units for a lean and an obese man (consuming 2000
calories) and woman (consuming 1600
calories).