New research may hold the answer to how much coffee or soda triggers a migraine By: MarketWatch August 08, 2019 at 15:15 PM EDT Migraines and caffeine have a complicated relationship, a new study shows. Read More >> Related Stocks: Bayer Aktienges ADR Coca-Cola Company Dunkin' Brands Group Novartis Ag ADR PepsiCo Starbucks Corp