As long as your heart is healthy, your whole body is healthy as having a healthy heart plays a vital role in having other organs work smoothly. A human heart is the hardest working muscle in human body. It pumps 4.5 liters of blood every minute during rest to various organs of our body. A diseased heart may result in impaired functioning of brain and peripheral vessels of our body. Hence it is vital to keep our heart healthy in order to keep our body healthy. The major signs and symptoms of a diseased heart are shortness of breath on rest and on exertion, chest discomfort, radiating pain to left upper limb or back, jaw pain, severe sweating. A cardiologist should be consulted if you experience any of the above mentioned symptoms. He will advise you certain diagnostic tests to ascertain the condition of your heart and then would be prescribing required medication or may advise interventional procedure if needed.