Which side of the body is the human heart located on?

The human heart is usually located in the lower left portion of the chest cavity. Its size is approximately that of a person's clenched fist. It lies primarily within the mediastinum, behind the body of the sternum and the 2nd to 6th costal cartilages, and in front of the 5th to 8th thoracic vertebrae. About two-thirds of the heart is situated to the left of the body's midline, while one-third lies to the right. The position of the heart is not absolutely fixed and may shift slightly due to factors such as breathing and changes in body position. For example, during deep breathing, the heart may move slightly along with the motion of the diaphragm.

The heart is one of the most vital organs in the human body, responsible for pumping blood to all parts of the body and sustaining normal life functions. If you experience any discomfort related to the heart, you should seek medical attention promptly.