Background and Objectives: Type 2 diabetes mellitus (T2DM) has emerged as
a significant global public health concern. Multiple studies have shown that
traditional nutraceuticals are potential to treat T2DM and its complications.
This review will explore traditional nutraceuticals with antidiabetic
properties with a focus on traditional Asian nutraceuticals and their
antioxidant effects on gene expression associated to T2DM. Methods and Study Design: Literature searching was conducted in
Pubmed, Scopus, and Science Direct using the keywords “nutraceutical”,
“antidiabetic”, "insulin resistance", "Diabetes Mellitus",
"herbal medicine", “mechanism”, “pathway”, "traditional
food", "functional food", “antioxidant”, “clinical”,
“preclinical”, "animal studies", and “Asian” combined with Boolean
operators “OR”. Results: Nutraceuticals sourced from
traditional Indonesian herbal beverages, including Galohgor, Bir Pletok, and
Wedang Uwuh, have shown potential efficacy in reducing hyperglycemia, oxidative
stress, and obesity in type 2 diabetes mellitus (T2DM). Furthermore, multiple
Asian plants and their bioactive compounds, such as curcumin, kaempferol,
cinnamon, saponin, quercetin, myricetin, anthocyanin, terpenoid, alkaloid, and
gallic acid, have been shown to beneficially influence glucose homeostasis,
insulin sensitivity, and problems associated with diabetes. Moreover, bioactive
compounds of these traditional nutraceuticals have been proven in modulating
gene expression associated with β-cell function, insulin signaling pathway, and
antioxidant activity, which may offer a new therapeutic target. Conclusions: This review highlights the increasing
scientific evidence on the role of traditional nutraceuticals for the
prevention and management of diabetes mellitus, presenting promising
alternatives to standard pharmacological therapy. Nonetheless, double-blind
randomized clinical trials are required to validate these antidiabetic effects.