The idea that a diet containing relatively high amounts of protein leads to kidney damage is persistent. (ironmagazine.com)
Too much creatine could possibly lead to kidney damage, but the scientific evidence of this is conflicting. (caffeineinformer.com)
The high blood pressure associated with hyperthyroidism in cats also leads to kidney damage over time, as will the other caused I listed for high blood pressure in dogs and cats here. (2ndchance.info)