“Simply stated, there is no scientific evidence whatsoever that high-protein intake has adverse effects on liver function. Relative to renal function, there are no data in the scientific literature demonstrating that healthy kidneys are damaged by the increased demands of protein consumed in quantities 2–3 times above the Recommended Dietary Allowance (RDA). In contrast with the earlier hypothesis that high-protein intake promotes osteoporosis, some epidemiological studies found a positive association between protein intake and bone mineral density. Further, recent studies studies suggest, at least in the short term, that RDA for protein (0.8 g/kg) does not support normal calcium homeostasis.”

Furthermore, the British Liver Trust recommends more protein, particularly from animal sources, to people with certain liver diseases.

http://www.mayoclinic.com/health/high-protein-diets/an00847

“Your body can’t store excess protein. During digestion and metabolism, protein is broken down into amino acids — the building blocks of protein. Your body uses these amino acids to make enzymes and other proteins. But any “extra” amino acids are stripped of nitrogen. The non-nitrogen parts of amino acids are used for energy or converted into fat, and the remaining nitrogen is eventually excreted by your kidneys and liver. These waste products have been shown to cause kidney injury, and in the presence of liver disease, excess nitrogen can cause further problems. High-protein diets may also increase the risk of kidney stones and osteoporosis. If you have kidney or liver disease or any chronic health condition, talk to your doctor before starting a new diet.”

So yes, it’s hard on the liver if you have pre-existing conditions, but it can also create problems.

Love your meat, but only eat 4 oz a day for optimal health.

Hopefully after this experiment, you’ll realize that you don’t need that much meat on a daily basis, and you’ll start to eat healthier both for you and the planet.