Too Much Caffeine Can Cause Headaches Wake Up 2day by: Kelly Simek Posted: Aug 29, 2019 / 10:12 AM HST / Updated: Aug 29, 2019 / 10:13 AM HST Do you need a lot of caffeine to get through the day? A new study says too much can cause headaches and migraines. However, there are some benefits. David Kaminskas, MD, is a neurologist with Adventist Health Castle and he joined Take2 with details.