In a new study published in the American Journal of Medicine, academics at Beth Israel Deaconess Medical Center (BIDMC), Brigham and Women’s Hospital and the Harvard T.H. Chan School of Public Health (HSPH) looked into how caffeinated drinks can impact your chances of triggering a migraine episode.
One or two bevs a day (which include cans of coke and mugs of tea, as well as flat whites etc) were not found to increase your chance of triggering a migraine headache. Three plus, however, was. (Side note: this is migraine headache-specific. The other symptoms of migraine, such as dizziness, nausea and sensitivity to light were not investigated.)
The results were found by asking 98 participants to keep a diary of everything they drank in a day. They also filled out reports on the migraine headaches they had dealt with each day, including detail on how long the attack lasted and which medications were taken. Also logged were other migraine headache triggers, like sleep patterns, where they were at in their menstrual cycles and alcohol intake.
The incidence of migraine headache on days when caffeinated drinks were consumed, versus those when they were not, were analysed: with the data showing that people who had three caffeinated drinks per day had a 27% chance of experiencing a migraine headache on that day.
This article originally appeared on Women's Health UK.