Wu Z, Tan B, Liu Y, et al. Chemical composition and antioxidant properties of essential oils from peppermint, native spearmint and Scotch spearmint. Molecules. 2019;24(15):2825. doi:10.3390/molecules24152825 Nozhat F, Alaee S, Behzadi K, Azadi Chegini N. Evaluation of possible toxic effects of spearmint (Mentha spicata) on the reproductive system, fertility and number of offspring in adult male rats. Avicenna J Phytomed. 2014;4(6):420-429.

Mazzio EA, Soliman KF. In vitro screening for the tumoricidal properties of international medicinal herbs. Phytother Res. 2009;23(3):385–98. Another in vitro study in 2014 showed similar anti-cancer properties of spearmint as well as other members of the mint plant family against four cancer cell lines (COLO-205, MCF-7, NCI-H322 and THP-1). 5. Fights Bacteria and Fungi

References

Akdogan, M., Kilinc, I., Oncu, M., Karaoz, E., and Delibas, N. Investigation of biochemical and histopathological effects of Mentha piperita L. and Mentha spicata L. on kidney tissue in rats. Hum.Exp Toxicol. 2003;22(4):213-219. View abstract. Cirlini M, et al. (2016). Phenolic and volatile composition of a dry spearmint (Mentha spicata L.) extract. Miles, C. and Johnson, A. J. Chewing gum and context-dependent memory effects: a re-examination. Appetite 2007;48:154-158. View abstract.

A study in Turkey found that twenty-one people with hirsutism (of which twelve people had PCOS) had a significant decrease in free testosterone and an increase in luteinizing hormone, follicle-stimulating hormone and oestrogen ( 1).Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.

This Organic Spearmint & Orange Spice Tea Bag Box has 8 tea bags in it. The ingredients of this herbal blend are dried honey, organic orange peel, organic spearmint, natural flavor and organic cinnamon. Grant P. Spearmint herbal tea has significant anti-androgen effects in polycystic ovarian syndrome. A randomized controlled trial. Phytother Res. 2010;24(2):186–8.Therefore, while studies on the effects of this type on mint on digestion are limited, some evidence suggests that it may be helpful. When applied to the skin: Spearmint is possibly safe. It might cause an allergic reaction in some people, but this is rare.