Morphling said:
So much bad advice in this thread
A Review of Issues of Dietary Protein
Intake in Humans
The "average" person needs 2.5-8% dietary protein to maintain health.
Yes, you will piss out excess protein. Too much protein is hard on your liver(too much fat intake too actually), and toxins from excessive amino acid metabolism canactually lead to such problems as hepatic encephalopathy.
Personally if I was eating a lb of beef daily I think I'd ask for a Lipitor chaser
There is so much bunk research and information on strength training and nutrition that it is very easy to find a study that supports any view you may have. Just because you found a study that says you only need 2.5% of your caloric intake from protein to maintain health doesn't mean that it's correct.
Just to show you the wide variety of information out there, here are a few studies that I found in 5 minutes of searching on PubMed, Journal of Nutrition and the Applied Journal of Physiology:
Beyond the Zone: Protein Requirements of Active Individuals - recommends 1.6-1.8g/kg of lbm, or at least
double that recommended for sedentary individuals
Metabolic Consequences of a High Dietary-Protein Intake in Adulthood - found no change in strength and mass increase when protein intake was shifted from 1.35-2.62g/kg of lbm
Protein requirements and muscle mass/strength changes during intensive training in novice bodybuilders - found no difference in strength/mass gains in novice trainees when protein intake was doubled
This statements was also issued by the WHO on potential health problems caused by "excessive" protein intake, "there are no functional indicators that can usefully be applied in experimental situations to detect protein inadequacy before clinically detectable changes occur"
There is lots of inconsistency in data on recommended intake, just as there are widely varied opinions and supporting research on nearly every nutritional topic. This, I believe, is due mostly to the wide variance in individual metabolism, genetic potential, musclo-skeletal makeup and exercise routines. Again, just because you find one study that supports your opinion doesn't make it correct.
What I can tell you for sure is that I'm a personal trainer and I do this all day, every day. I keep meticulous records on my own and my clients' workout performance and nutrition. I can say that without exception, more protein has equaled more strength, more mass and faster recovery from workouts.
Lift hard and heavy (the squat and deadlift recommendation is dead on) and you will be dying for more protein, guaranteed.