From a Q&A on Chaos and Pain
http://chaosandpain.blogspot.co.uk/2012/...t-all.html
Q:"Too much protein damages your kidneys."(More of a statement, really, made by someone who has no fucking clue what they're talking about)
A: This is wholly, completely, and patently incorrect. For healthy people, your internal organs adapt to your diet in the same way that your muscles adapt to increased training levels, and suffer no ill effects whatsoever in the transition.(Skov) Once you get your protein levels through the fucking roof, keeping them there doesn't adversely affect you either.(Knight) Additionally, high protein diets are associated with higher B-12, B-6, and folate levels, and better lipid profiles.(Knight) Frankly, I think the entire idea that there can be "too much" protein in your diet is about as sensible as Shaquille O'Neal's foray into rap. Americans in particular are historically a nation of meat eaters, and we were eating 178 pounds of meat per person a year in the 19th Century and eight times as much meat as bread in the 18th... which is a tremendous amount considering the fact that refrigeration had not yet been invented.(Taubes 11)
Even if the human condition had deteriorated markedly in the last couple of hundred years, your lifestyle has bestowed upon you far greater ability to absorb the protein you consume than the average person, as resistance exercise confers greater protein synthesis. The theory behind this, called the "Energetical Theory" of muscular hypertrophy, suggests that when "the mass of proteins catabolized by resistive exercise exceeds the mass of proteins newly synthesized... between training session, protein synthesis is increased. The uptake of amino acids from the blood into the muscles is above resting values. This repeated process of enhanced degradation and synthesis of contractile proteins may result in super-compensation of protein."(Bernadot 33, Zatsiorsky 8) Due to this phenomenon, it seems ridiculous that the human body would be adversely affected by high dietary intake of protein. Were humans subject to a hard limit on their protein intake, we'd be unable to heal properly when burned, or to recover from the types of incredibly hard labor that were common as iPhones in a Starbucks today. Should you be concerned that a diet heavy in protein shakes like this one would cause your system some undue stress, fear not- science has our backs once again. "During food restriction, protein anabolism is favored when the delivery of amino acids is evenly distributed throughout the day"(Mosoni) and greater frequency of feedings increases the amount of protein you absorb.(Cohn) So, we know that your body will adapt to high protein levels, and that the more frequently you eat protein, the easier it'll be to absorb.
But where are the benefits for a heavy lifter, you might ask? For starters, an intake of greater than 1 gram per pound of bodyweight, in addition to being comically easy to consume, results in a positive nitrogen and negative fat balance.(Forslund) Even larger amounts (>1.5grams/lb. of bodyweight) will stimulate significant muscle growth, and the unused protein will be oxidized and excreted, wholly without deleterious side effects, by healthy kidneys.(Fern) This diet, being somewhat lower in fat and higher in protein than the typical ketogenic diet, will obviously result in some glucogenesis, which is for some reason strikes in a bunch of you terror not unlike that which small children used to reserve for the bogeyman and Michael Jackson. Glucogenesis, or the process by which the body converts protein to energy to replace lost muscle glycogen, occurs irrespective of the type of diet one follows. 5-15% of the amino acids you consume are going to be used as fuel in weight training, and endurance sports utilize an even greater percentage to repair the extensive damage caused by whatever shenanigans in which they happen to be engaging.(Bernadot 31) In short, more protein is good, and a shitload more protein is a even fucking better. Thus, according to both common sense and a meta-analysis, the following is true: Unless you're suffering from renal failure, you can eat protein to your heart's content, and anyone who says otherwise is a liar spouting hippie bullshit, and is possibly a communist.(Martin)
If you're worried about kidney stones, you're either a woman, a 70 year old man, or you're fucking retarded. Kidney stones are caused by dehydration or disease, not your protein intake.(NKUDIC) In other words, quit yet bitchin' and drink more fucking water, and if you're a chick, take a fucking leak after you someone smashes the fucking granny out of you- untreated UTIs lead to kidney stones.
That, motherfuckers, is called dropping knowledge.