I think turkey sausages have a lot of sodium, 33% of your daily intake only in 1 sausge you can verify the nutritional information here : https://cronometer.com/ and for example what i eat are beans to get my protein usually, and 1 cup of cooked black beans has 1.7mg of sodium, less than 1% of your daily intake of sodium... or 1 cup of chickpeas has 11.5mg of sodium... around 1% of your daily intake... which legumes are you talking about that are high in sodium ? because 1 turkey sausage has 500mg of sodium... or hemp seeds that has a lot of protein (and also low in sodium 12mg of sodium each 100gr) even hemp seeds have more protein than meat... what you are talking about that case in specific about chronic kidney diseases, check out this scientific studies: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5409713/ depends on each situation but its proven not to be harmful in all cases a plant based diet on chronic kidney disease patients... here is more information about veganism by harvard: https://www.health.harvard.edu/staying-healthy/is-a-vegetarian-or-vegan-diet-for-you