coloradorudy

It's agreed that 3500 calories is roughly equal to one pound (i.e. if you eat 3500 calories more than what your body requires, you will gain 1 pound). But 1 gram of pure fat (lard) has 9 calories. 453 grams per pound means that 1 pound of pure fat has 4077 calories. Thus, if you eat 1 pound of lard, you will gain MORE than one pound of weight (about 1.16). This defies what I know about conservation of mass. What am I doing wrong?