These sit between the two things people usually search: a condition ("kidney disease") and a product. A guide names the handful of things that genuinely change the decision — for kidney disease that's phosphorus first, protein quality second — and then shows the foods that meet them, so the shortlist arrives with the reasoning attached.
A guide is not a diagnosis and not a prescription. Where the evidence doesn't support treating a condition with diet, the guide says so and carries no food list at all. Anything involving a diagnosed medical condition should go past your vet first.
Feeding approaches and life stages — senior, weight control, limited-ingredient — live in the lifestyle guides. Food allergies live in the allergy guides, along with the free-from food lists.
