Heart is a pumping organ that receives impure blood and sends back pure blood to the lungs for purification. If the blood is healthy and pure and its circulation is not impacted there can hardly be any cardiac problem. The chief culprit in this regard, is rise in cholesterol which is the major causative factor for host of diseases like hypertension, coronary heart disease, thickening and hardening of blood vessels, pain in chest region (called Angina Pectoris).
In addition, heart may get diseased due to rheumatism, syphellitic suppression, tonsillitis, (of chronic tendency) weakened muscles or degeneration of the organ, inflammation of inner and outer coating (covering) of the heart, lack of blood supply anaemic conditions etc. Toxity of blood is another cause for various heart problems.
If you aim and wish to keep your heart in a healthy and normal state, try to avoid the causes, including foods, that are known to toxify your blood, thus rendering it impure and unhealthy. Take plenty of fresh fruits and vegetables like apples, oranges, beet-root, grated carrots, bitter gourd, whole wheat bread, curd, whey etc. , but avoid alcohol, tobacco in any form, all forms of fats, highly spiced foods. Some butter should be taken daily as fat is an essential ingredient of a balanced diet but that should be taken in a limited and measured quantity. Fresh butter (home made), preferably of cow, is an ideal fat. Reduce salt from diet. Secure regular and timely evacuation of the bowels. A saline water (hot) enema, once a weak, will suffice to remove constipation.
Non-vegetarians should avoid red and fatty meat, particularly pork. Eat only when you are hungry. Never succumb to avarice of tongue and taste. Never eat stomachful. If you are diabetic, shun use of sugar and sweets. Non-diabetics should give up crystal sugar and replace the same with jaggery or other sugar-cane biproducts (Not crystal sugar). Walking daily is an excellent toxic for heart.
Patients who have undergone bye-pass surgery are advised by cardiologists to have a daily walk for 4-5 kms, without a pause. If you take a paise the benefits derived from the previous walking should be lost. Distance should be extended gradually but make sure your that, during the course of walking, there is neither any fatigue nor any dyspnoea (breathlessness). Almost all the doctors preach their patients to totally avoid hurry, worry and scurry (or curry) but, in tension-ridden modern life, it is not possible. All the same, an effort should be made to not to allow these factors take better of you.
Reduce drug dependence as far as you can. Once a cardiologist had opined that the heart must be subjected to 25% of extra load, over and above the normal load which can be interpreted to mean that if person, who walks 4 kms a day, should add another (extra) km to his walking distance. At the outset apply hot towel compression on your heart region in case of an attack. It will reduce constriction around the painful heart region as it dilates the clogged arteries, thus reducing pressure and strain on heart and facilitate flow of blood. Deep breathing or Pranayam is much to be impressed upon it will enhance breathing and expanding capacity of the lungs, let in fresh air and oxygen, thus supplying healthy and fresh blood to the heart.