The humble bay leaf can pack a mighty punch when it comes to health benefits. While adding minimal calories, bay leaf increases the amount of fiber, vitamins, minerals, and antioxidants to a dish. Bay leaf is a good source of vitamin A, vitamin B6, and vitamin C. These vitamins are all known to support a healthy immune system. Bay leaf tea can help ease bouts of upset stomach. The tea is also very aromatic, which can help relieve sinus pressure or stuffy nose.