Sausage is a common food in daily life, mainly made of meat, starch, salt and so on. A large amount of sodium nitrite will be produced in the production of ham sausage, which can paralyze the central nervous system and even cause poisoning in severe cases. Moreover, a large number of preservatives are added to the ham sausage, which may cause hemolysis if ingested into the human body. The salt content of ham sausage is very high, which is easy to raise blood pressure, so it is generally recommended not to eat too much ham sausage.
It is harmful, depending on your own understanding, which is the most harmful.