Vietnamese Fountain of Youth

Vietnamese diet can be considered as the fountain of youth as of its antiaging abilities.  Polyphenol was considered to be one of the ablest antioxidants. 

One study found that some herbs and edible wild vegetables possessed high contents of polyphenols and antioxidant activities. Among green vegetables, sweet potato leaves showed both a high polyphenol content and antioxidant activity. The mean polyphenol daily intake of the Vietnamese was a 595mg catechin equivalent. Water spinach, a kind of green vegetable, contributed the highest amount (45%) of the total polyphenol intake, followed by other green vegetables. The study suggests that Vietnamese cuisine is rich in polyphenols.

Reference

Thu, N.N., Sakurai, C., Uto, H., Van Chuyen, N., Do, T.K., YAMAMOTO, S., OHMORI, R. and KONDO, K., 2004. The polyphenol content and antioxidant activities of the main edible vegetables in northern Vietnam. Journal of nutritional science and vitaminology, 50(3), pp.203-210.