A new British study shows that eating spinach regularly not only reduces the incidence of heart disease, but also increases the success rate of saving heart attack patients when they have an attack. This is because the nitrite contained in spinach can “ventilate” the heart attack victim. Spinach is rich in nitrites, which are converted into nitric oxide gas when a person has a heart attack, helping to widen or unblock the arteries, thus allowing more oxygen to reach the heart and preventing the heart from being deprived of oxygen, which can lead to bad outcomes. Nitrites? One wonders, isn’t that preservative commonly used in canned goods and ham sausages a carcinogen? It is this preservative that scientists at the National Institutes of Health have found that this carcinogen can indeed cure diseases and is expected to be made into a drug to treat sickle cell anemia, heart disease, brain aneurysms and many other diseases related to blood flow! American scientist Dr. Mark T Gladwin and cardiologist Richard? Cannon, PhD, conducted the trial. They injected healthy volunteers with trace amounts of nitrite and found that blood flow in the body increased twofold. But it is not to say that nitrites are “vindicated”, because high doses of nitrites can still be very toxic. Accidental ingestion of nitrites can lead to nitrite-based food poisoning, and long-term use can even lead to esophageal and stomach cancer. So, spinach with not much or no nitrite content is a good choice. However, be sure to take care not to eat spinach that has been placed for a long time, or spinach that has not been pickled properly, because that can make the nitrite content increase dramatically and risk poisoning after consumption. In addition, spinach contains high levels of beta carotene and iron, and is also an excellent source of vitamin B6, folic acid and potassium. Eat spinach in boiling water for three minutes before continuing to cook and eat it. It is best if you can have a few meals of mixed spinach each week.