How are food and symptom patterns found?
From your own days, and nothing else. Damson looks across the meals you logged, the check-ins you answered and the symptoms you marked, and when enough of them line up, it shows you an observation. Until then, it says so: none of them came together into a comparison yet.
With PCOS, now also called PMOS, general advice runs out quickly. Two people can eat the same lunch and have two different afternoons. A pattern built from your own record is about you, which is the only person it claims to describe.