Safety and health are two different things. Food safety can be understood as no harm to health in the short term and no toxicity in the long term, while food health involves nutrition and other aspects, which affects long-term health.
Cooked meat in the supermarket is safe, but unhealthy.
Why is it unhealthy?
First, high salt, high salt is the biggest harm of these foods.
Excessive salt intake is related to gastric cancer, hypertension and stroke.
Second, high oil and too much fat will increase the risk of obesity and indirectly affect health.
These two are the most influential. As for many additives, it's not that bad. Many people are afraid of nitrite, which has long been banned in the catering industry.
However, it is not excluded that nitrite is used secretly or added in the semi-finished stage of factory production. If the cooked meat sold in the supermarket is not catering, but packaged cooked food, then nitrite is allowed to be added.
In addition, semi-finished products and packaged products also like to add phosphate as water retaining agent. These additives are not very good, but the risk is not high.