Read the paragraph below. What is the main idea?

Everyone knows that too much sugar and salt are unhealthy. But even if you avoid adding these to your food, you could still be getting too much in your diet. Sugar and salt are hidden in lots of everyday foods that you wouldn’t expect, like bread, peanut butter, and juice drinks. To find out how much sugar and salt you’re really getting, read the labels. Also, choose whole foods like fruits, vegetables, and grains that don’t have added sugar or salt.
Sugar and salt are bad for you.
Food labels are not important.
Fruits, vegetables, and grains don’t have added sugar or salt.
Sugar and salt can be hidden in some foods, so work to avoid them.