Consumption of iodized salt can prevent goiter, but excessive amounts may cause harm to the human body. In this regard, some experts have pointed out that as long as the amount of consumption does not exceed the standards prescribed by professional departments, its harm can be completely avoided. Therefore, people are consuming iodine The fear of salt is unnecessary. What are the prerequisites for the above conclusion to be true? ['All people consume iodized salt in strict accordance with the standards of professional departments.', 'Few people consume large quantities of iodized salt.', 'Current data show that iodized salt has only a few side effects.', 'The side effects of iodized salt are not harmful to the human body.']