Why are vegetables good for dieting?

Dieting is now an essential part of beauty, isn't it?

You know how they usually tell you to eat plenty of vegetables when you're on a diet.

I used to be a very picky eater, but I started a diet by eating a lot of vegetables with my meals. After doing it, I looked up why it is good, and I found out that vegetables are beneficial for dieting because they hinder the rapid absorption of other foods.

So, they say it's best to eat it with vegetables. They especially advise eating vegetables when eating greasy food.