![](https://cdn.nutritiontips.club/wp-content/uploads/2019/10/6-onion.jpg)
Teeth whitener: Onions
While they won’t do many favors for your breath, onions contain sulfur compounds that keep plaque from forming on and in between your teeth. Sautéed or oven roasted onions won’t do the trick, though. If you want to reap the benefits of this anti-plaque vegetable, you have to eat it raw.