A reasonable food choice, wrapped in a timing claim the evidence doesn't actually support.
Seed cycling proposes eating specific seeds (flax and pumpkin during one half of the menstrual cycle, sesame and sunflower during the other) to naturally support hormone balance — a popular wellness practice with a specific, testable mechanism claimed behind it.
The seeds themselves are nutritionally reasonable (flax and pumpkin seeds in particular bring fibre and omega-3s, both covered in our foods list) — but there is no quality clinical research demonstrating that timing their intake to cycle phase meaningfully shifts hormone levels the way the practice claims.
Adding fibre- and omega-3-rich seeds to your diet at all is a reasonable, evidence-supported change — the improvement some people notice likely reflects that general nutritional upgrade, not the specific cycle-phase timing.
Eating the seeds is fine and reasonable. The specific timing claim is where the evidence runs out — no need to track your cycle to get the nutritional benefit.