Spearmint is a delicious, minty herb that may have beneficial effects on your health. It's high in antioxidants and other beneficial plant compounds that may help balance hormones, lower blood sugar and improve digestion. It may even reduce stress and improve memory. It is also used for sore throat, colds, headaches, toothaches, cramps, and inflammation of respiratory tract. Some people use it as a stimulant, germ-killer, and local pain-killer.