This myth that high protein intake damages your kidneys simply needs to stop. A balanced diet is essential for overall health.
This has personally affected me, and I’ll tell you about the crazy story that happened to me later.
The reason this misconception has developed is that athletes who weight train commonly have elevated waste products, such as creatinine and urea levels, in their blood and urine.
I had my blood work done at the Royal Free Hospital in London. My creatinine levels came back high, and a junior doctor insisted I had kidney failure.
He made me stay on a drip all night while sitting on a stool.
The consultant kidney specialist came in to see me in the morning and was visibly angry.
He stated that this was simply a normal, healthy response to higher nutrient turnover.
“If you eat more protein, your body will have to process more protein.”
A recent meta-analysis examined the incidence of chronic kidney disease in prospective and case-control studies of just under 150,000 people. (1)
The researchers found that higher nutrient intakes were associated with less chronic kidney disease.
High-protein diets appear to have no negative effects even on people with pre-existing kidney disease when consumed responsibly.
The bottom line: if you want to build muscle and lose fat, eat a high-protein diet of at least 1.6g of protein per kg of body weight. (2)
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