I enjoyed reading your guide. One suggestion I have is to maybe add a small section on oxalates next to the “Calcium and electrolytes“ section. It could help newcomers who’re unaware of how oxalate can significantly derange calcium signalling and perhaps provide a glimpse of how oxalate excess & oxalate clearance symptoms may manifest themselves. Also, this section could spark a wariness against getting one’s dietary calcium needs met from plant sources which lack bioavailability for humans due to their calcium content being largely bound to oxalate (e.g., figs, chia seeds, &c.).