Hello and thank you for your question. Anxiety is not directly associated with heart attacks, however many patients with heart attacks can have anxiety. Stress is more commonly associated with the later, and stress relief and coping mechanisms can provide improvements in anxiety, blood pressure and cardiovascular morbidity and mortality. Therefore, it isn t an important to ask why you are worried of having a heart attack so much as it is important to ask yourself how you can cope with anxiety, as it appears from your statement you do have a degree of control over your heart palpitations. Here are some of my recommendations, though you should see a medical doctor/psychiatrist for a formal treatment and full face to face consultation: 1) Stress reduction - journaling is an important component of this method. Take notes of triggers, what bothers you, how you react, and what helps alleviate your anxiety. Gaining insight into these triggers is very important to controlling your health condition. 2) Exercise - it is an important component of stress management, particularly as it relates to endorphin release from the brain, which promotes pain tolerance and stress tolerance. 3) Healthy dieting - caffeine, energy drinks like Monster and Red-bull should be avoided as they can promote palpitations. Other agents known to promote heart palpitations include nebulizers like Albuterol used from Asthma treatment, and in some rare situations, Milk has been known to trigger anxiety attacks. 4) Cardiac assesment - Some patiets with anxiety disorder have been known to have heart valve abnormalities, particularly the mitral valve. An EKG might be indicated if a heart valve abnormality is suspected. You should see a cardiologist or PCP for this. 5)Medications - If the above conservative measures do not alleviate some of your anxiety, there are prescription strength medications that may help, i) Beta blockers like Metoprolol can help with palpitations ii) Medications that increase Seratonin like Prozac have proven very beneficial for anxiety and iii) Tranquilizers like Xanax, which should only be prescribed by a licensed provider who can observe and monitor you for side effects and response. I hope this helps. Seek out a Medical Doctor for further recommendations or to get assistance with any of the advice I have provided above. -Dr. Marco