'>Before delving into the effectiveness of heat pads, it's essential to understand what causes period pain. The pain usually results from the contraction of the uterus as it sheds its lining. These contractions are triggered by hormone-like substances called prostaglandins. Higher levels of prostaglandins can lead to more intense contractions, causing increased pain. Other factors, such as stress, anxiety, and underlying health conditions, can exacerbate the discomfort.