Why you need this nutrition facts label?

Answer 1

Nutritional Information labels on food and drink products can assist/aid people in not injesting "inappropriate" food items, or in consuming "too much" of them.

For example, some folks are so allergic to peanuts, that even eating ONE can be fatal, so if a product contained them, knowing that might save a consumer's life. And, some individuals are on salt-free or sugar-free (restricted) diets, so the content of each might be vital to know. Lastly, some of our fellow Earthlings just wish to know how many calories a typical serving contains, just in case they are counting them.

Answer 2

we need this because we can found out what nutrition will we get from that food.