A new study has found that those with high blood levels of beta-carotene may have better lung function as they age. As the health of the lungs begins to decline in the late 20s, this is yet another reason to eat more carrots, spinach, and broccoli.

The study also brought good news for smokers. Researchers found that beta-carotene and vitamin E might also offer some protection to the lungs of heavy smokers. But scientists emphasize that this does not mean a spinach salad a day can prevent lung cancer.