Why does Popeye like spinach?

Nothing upstairs is correct. This cartoon is that the United States mistakenly believes that spinach has high nutritional value. This cartoon is made to make children eat more spinach. In fact, the nutritional value of spinach is not very high. Many years ago, American scientists calculated that spinach has a high value of iron, but this year it is proved that spinach has the same nutrition as ordinary vegetables. Because I accidentally clicked a decimal point when calculating the nutritional value of spinach! In fact, it is the nutrition of ordinary vegetables. The main purpose of making this cartoon is to make children eat more vegetables and have the power of Popeye! ! ! For the future of America, of course!