Reference: 

https://isha.sadhguru.org/in/en/wisdom/video/incredible-benefits-of-betel-leaf-nut

https://www.healthline.com/nutrition/antioxidants-explained

https://www.medicalnewstoday.com/articles/301506

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3892533/