A new medical study shows that younger woman are more likely than men to suffer heart attacks without the common symptoms. The report says pre-menopausal women will experience shortness of breath or experience pain in their jaw, neck or shoulders during a cardiac event. Dr. Iliana Pina, a Bronx cardiologist, says diabetic women and those who smoke are especially prone to such "silent" attacks. She adds that the blockages that cause problems with men happen in the coronary arteries, whereas female blockages happen in the heart muscle.