Every Christmas season, heart-related deaths spike in the U.S.
Among researchers, the question of cause has always been up in the air. On the one hand, the holidays are associated with strenuous schedules and travel, rich meals, increased alcohol consumption and extra emotional stress ― all risk factors for heart issues. On the other, the event coincides with winter temperatures, which are known to restrict blood vessels, putting extra strain on the heart.
A new study published in the Journal of the American Heart Association lays blame at the feet of Father Christmas, not colder temperatures, thanks to a perfect comparison group: New Zealanders, a culturally similar population that celebrates Christmas during their summer time.
