Why your left arm hurts during a heart attack: The hidden science behind this warning sign
dharasuta
Thursday, November 6, 2025
Chest pain isn't the only heart attack sign; discomfort in the left arm is a vital clue. This occurs because shared nerve pathways confuse the brain, interpreting cardiac distress as arm pain. Research confirms this link, highlighting that left arm pain, especially with other symptoms, demands immediate medical attention for better survival chances.
