In the summer, when atmospheric pressure fluctuates and the heat offers no respite, many of you experience exacerbated headaches. At such times, an internet search often yields a “miraculous” solution – Daith piercing. This piercing in the upper part of the ear cartilage has become surrounded by legends of its ability to stop migraines. But is this really the case? Let’s explore what science says about the connection between piercing and the vagus nerve, how our brain works, and why the hope for a “magic earring” can be a dangerous illusion.