Calcium to Phosphorus levels in TONS of food can be found here:
https://thesquirrelboard.com/forums/...sphorus-Ratios Go to post #17 on the thread for downloadable .pdf files (the ones in the first post got corrupted). We all have this thing printed out somewhere in our house!
We also have a Healthy Diet pyramid here.
These two guides are addressing the calcium issue for the most part, Obviously squirrels need other vitamins and minerals! The Henry's blocks were designed to be fed along with the Healthy diet and they address all of those other nutritional things.
Mostly, you want to really limit the high phosphorus stuff, especially with a squirrel that has or has had MBD. There are a few foods like corn, sunflower seeds, pine nuts that are just SO high in phosphorus that simply eliminating them is best.