There is no evidence of protein intake causing kidney damage.
The kidney is "designed" to 1) not leak proteins and 2) to reabsorb any that do get into the urine.
Not a good sign it indicates your blood is not being filtered properly which is your kidneys job if you have protein in your urine may be an indication of kidney failure
No, it indicates problems with the liver and gallbladder.
Unless you have kidney damage, or massively over-consume protein, without fat, which is hard to do eating normal foods, then protein is perfectly safe to eat.
This question is slightly imprecise in its phrasing. All human cells and organs contain protein, so it is inevitable that kidneys contain protein; you cannot have kidneys without protein. However, what you are probably thinking of is the protein albumen, leaking from the kidneys into the urine. That is a sign of kidney damage, probably caused by a kidney stone.
Protein is a relatively large molecule, so when it is present in the urine, it can mean that the glomeruli in the kidney are damaged. The glomeruli filter the blood to remove toxins, and are expected to filter even smaller molecules, so seeing large protein molecules through is not good news. But protein in the urine can be there for reasons other than kidney damage. It can be a sign of a urinary tract infection, for instance.
Excessive protein in a horse's diet can result in kidney damage or outright destruction resulting in death. If the excess is mild, the protein is usually successfully excreted in the urine.
It indicates a kidney disorder, because about half of NPN substances is urea (what the kidneys excrete).
protein deficiency, liver damage, malnutrition, severe burns, kidney disease, chronic infections, and certain genetic disorders
Protein metabolizes in the liver and is then excreted by the kidneys. The added strain of a high protein diet can cause long-term damage to these organs, as well as cause kidney stones and bone loss.
No, but if it is it can show that there is kidney problems, such as kidney disease