Cacao powder can have mixed effects on migraines, as it contains magnesium, which may help relax blood vessels, but also caffeine and theobromine, which can be triggers for some individuals. While its antioxidants and serotonin-boosting properties might aid in reducing stress-related migraines, its potential to cause vasodilation and histamine release could worsen symptoms in sensitive individuals. If caffeine is a known trigger for you, it’s best to avoid cacao during a migraine, but if magnesium helps, consuming it in moderation might be beneficial. Tracking your body’s response can help determine whether it works for you.