Some experts believe that excessive caffeine consumption (more than 3-4 cups) can intensify PCOS triggers. Having Coffee/ Tea first thing in the morning also elevate cortisol levels. Work on minimizing your intake or choose healthier alternatives. Many women with PCOS already have elevated levels of cortisol, so more cortisol secretion is the last thing you want! Elevated cortisol can worsen insulin resistance and raise blood sugar levels.