Kate Street

Type 2 diabetes mellitus (T2DM) has become one of the defining health challenges of our time. Globally, an estimated 462 million individuals are living with T2DM, with prevalence continuing to rise across both developed and developing nations.1 In Australia alone, almost 1.2 million people were living with T2DM in 2021, equating to approximately 4.6% of the population, while around 125 Australians are newly diagnosed every day.2Central to the management of T2DM is the optimisation of glycaemic control.3 While diet, exercise, weight management, and conventional medicines remain foundational, interest continues to grow in evidence-based complementary medicines that may further support healthy glucose metabolism, with 50–60% of people with T2DM using some form of complementary therapy alongside conventional medicines.4<h3>Why blood glucose control matters</h3>Glucose homeostasis is regulated through a complex interplay of physiological processes, including insulin and glucagon secretion, insulin sensitivity, and glucose utilisation.5 Several organ systems are involved, including the brain, liver, skeletal muscle, and adipose tissue.6 Under healthy conditions, these mechanisms work in synchronicity to maintain blood glucose concentrations within a relatively narrow range, ensuring a sufficient supply of energy.6In T2DM, this finely tuned system becomes progressively disrupted. As insulin resistance develops and pancreatic β-cell function declines, the body's capacity to effectively regulate blood glucose is compromised, resulting in chronic hyperglycaemia (elevated blood glucose levels).7 Over time, persistently elevated blood glucose levels can contribute to both microvascular and macrovascular complications, including cardiovascular disease, nephropathy, retinopathy, and neuropathy.7Consequently, optimising glycaemic control remains a primary therapeutic goal in diabetes management. Alongside established lifestyle and pharmacological interventions, interest continues to grow in evidence-based complementary medicines and nutritional interventions that may support healthy glucose metabolism, insulin sensitivity, and broader metabolic health.<h3>Nature's influence on one of the world's most prescribed medicines</h3>One of the most compelling examples of traditional medicine informing modern pharmaceutical innovation comes from Galega officinalis, commonly known as goat's rue, a traditional herbal medicine in Europe.8 Researchers later discovered that the plant contains guanidine-related compounds with blood glucose-lowering properties.8 This observation sparked scientific investigations that ultimately led to the development of the biguanide class of medicines.8 Metformin, now considered the first-line pharmacological treatment for T2DM worldwide, traces its origins back to these discoveries.8Although contemporary clinical evidence for goat's rue itself remains limited, preclinical studies continue to demonstrate biological activity relevant to glucose metabolism. Recent laboratory and animal research has reported glucose-lowering effects and favourable modulation of pathways involved in glycaemic regulation.9 While these findings require confirmation in human clinical trials, they highlight the ongoing scientific interest in goat's rue and its bioactive constituents.This serves as an important reminder that traditional medicine and modern pharmacology are not opposing disciplines. In fact, an estimated 40% of modern medicines are derived from, or inspired by, natural substances and traditional knowledge.10 Goat's rue is a powerful example of how observations from traditional practice can contribute to major therapeutic breakthroughs.<h3>Bitter melon: traditional use supported by emerging evidence</h3>Another botanical attracting significant research interest is bitter melon (Momordica charantia). Traditionally used across Asia, Africa, and the Caribbean for metabolic health, bitter melon contains a range of bioactive compounds that may influence glucose metabolism through multiple pathways.11A 2024 systematic review and meta-analysis of eight randomised controlled trials involving 423 participants with T2DM found that bitter melon supplementation significantly reduced fasting blood glucose, postprandial glucose, haemoglobin A1c (HbA1c), and total cholesterol, compared with control interventions.12Mechanistically, the glucose-lowering effects of bitter melon are attributed to enhanced insulin secretion, improved insulin resistance, regulation of glucose uptake, increased hepatic glycogen synthesis and glucose utilisation, and carbohydrate metabolism.12 Bitter melon also exerts significant antioxidant and anti-inflammatory properties, further supporting anti-hyperglycaemic effects.12<h3>Magnesium and chromium: a metabolic partnership</h3>While herbal medicines often capture attention, certain nutrients play equally important roles in glucose regulation.Magnesium is involved in hundreds of enzymatic reactions throughout the body and is essential for insulin signalling, glucose transport, and energy metabolism.13 Chromium is a trace mineral with key roles in insulin sensitivity, glucose metabolism, insulin secretion, and muscle mass.14Recent evidence suggests these nutrients may be particularly effective when used together. A 2024 double-blind, randomised, placebo-controlled study involving 120 adults with impaired glucose tolerance and insulin resistance examined the effects of chromium and magnesium supplementation over 12 weeks.14 Investigators found that the combination significantly improved fasting blood glucose, fasting insulin, and homeostatic model assessment for insulin resistance (HOMA-IR) scores compared with either nutrient alone or placebo.14 Participants also experienced favourable changes in HDL cholesterol, triglycerides, inflammatory markers, and oxidative stress biomarkers.14These findings highlight the interconnected nature of metabolic health, where glycaemic control, inflammation, oxidative stress, and cardiovascular risk factors frequently overlap.<h3>Conclusion</h3>As the burden of T2DM continues to grow, evidence-based complementary medicines are increasingly being explored alongside dietary and lifestyle interventions. Goat's rue reminds us that traditional knowledge can inspire transformative pharmaceutical advances, while emerging research on bitter melon, chromium, and magnesium highlights the ongoing role of natural therapeutics in metabolic health.Although complementary medicines are not substitutes for prescribed diabetes care, growing evidence suggests they may offer valuable support within a broader, personalised management plan. As research continues to evolve, the relationship between traditional medicine and modern therapeutics may prove more relevant than ever in addressing one of the world's fastest-growing chronic health challenges.<h3>References</h3>1 Huang X, Wu Y, Ni Y, Xu H, He Y. Global, regional, and national burden of type 2 diabetes mellitus caused by high BMI from 1990 to 2021, and forecasts to 2045: analysis from the global burden of disease study 2021. Front Public Health. 2025;13:1515797. doi:10.3389/fpubh.2025.15157972 Australian Institute of Health and Welfare. Diabetes: Australian facts. 2026. Available from: <a href="https://www.aihw.gov.au/reports/diabetes/diabetes/contents/how-common-is-diabetes/type-2-diabetes">https://www.aihw.gov.au/reports/diabetes/diabetes/contents/how-common-is-diabetes/type-2-diabetes</a>3 Chan JCN, Deerochanawong C, Khunti K, Hassanein M, Mohan V. Glycaemic control remains central in type 2 diabetes mellitus management: key learnings from the latest International Diabetes Federation guidelines. Diabetes Res Clin Pract. 2026;234:113173. doi:10.1016/j.diabres.2026.1131734 Sriraman S, Sreejith D, Andrew E, Okello I, Willcox M. Use of herbal medicines for the management of type 2 diabetes: A systematic review of qualitative studies. Complement Ther Clin Pract. 2023;53:101808. doi:10.1016/j.ctcp.2023.1018085 Gallardo N, Artigas-Jerónimo S, Mazuecos L, Andrés A. Neuroendocrine control of glucose homeostasis: integrative mechanisms from the hypothalamus to the brainstem. Front Endocrinol (Lausanne). 2025;16:1731725. doi:10.3389/fendo.2025.17317256 Häusl AS, Balsevich G, Gassen NC, Schmidt MV. Focus on FKBP51: A molecular link between stress and metabolic disorders. Mol Metab. 2019;29:170–181. doi:10.1016/j.molmet.2019.09.0037 Lima JEBF, Moreira NCS, Sakamoto-Hojo ET. Mechanisms underlying the pathophysiology of type 2 diabetes: From risk factors to oxidative stress, metabolic dysfunction, and hyperglycemia. Mutat Res Genet Toxicol Environ Mutagen. 2022;874-875:503437. doi:10.1016/j.mrgentox.2021.5034378 Bailey CJ. Metformin: historical overview. Diabetologia. 2017;60(9):1566–1576. doi:10.1007/s00125-017-4318-z9 Angouti F, Nourafcan H, Saeedi Sar S, Assadi A, Ebrahimi R. Optimizing antidiabetic properties of Galega officinalis extract: Investigating the effects of foliar application of chitosan and salicylic acid. Food Sci Nutr. 2024;12(8):5844–5857. doi:10.1002/fsn3.420410 World Health Organization. Traditional medicine has a long history of contributing to conventional medicine and continues to hold promise. 2023. Available from: <a href="https://www.who.int/news-room/feature-stories/detail/traditional-medicine-has-a-long-history-of-contributing-to-conventional-medicine-and-continues-to-hold-promise">https://www.who.int/news-room/feature-stories/detail/traditional-medicine-has-a-long-history-of-contributing-to-conventional-medicine-and-continues-to-hold-promise</a>11 Dias DD, Vasconcelos AR, Souza ACR, Menezes C de, Silva IST e., Name JJ. Nutritional approaches to enhance GLP-1 analogue therapy in obesity: A narrative review. Obesities. 2025;5(4):88. doi:10.3390/obesities504008812 Zhang X, Zhao Y, Song Y, Miao M. Effects of Momordica charantia L. supplementation on glycemic control and lipid profile in type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials. Heliyon. 2024;10(10):e31126. doi:10.1016/j.heliyon.2024.e3112613 Matek Sarić M, Sorić T, Juko Kasap Ž, Lisica Šikić N, Mavar M, Andruškienė J, et al. Magnesium: Health effects, deficiency burden, and future public health directions. Nutrients. 2025;17(22):3626. doi:10.3390/nu1722362614 Zhao Y, Zhou M, Shang Y, Dou M, Gao S, Yang H, et al. Effects of co-supplementation of chromium and magnesium on metabolic profiles, inflammation, and oxidative stress in impaired glucose tolerance. Diabetes Vasc Dis Res. 2024;21(1):14791641241228156. doi:10.1177/14791641241228156

<h3>Key highlights
</h3><ul><li>An estimated 462 million people worldwide are living with type 2 diabetes mellitus (T2DM), highlighting the growing need for effective metabolic health strategies.</li><li>Maintaining healthy blood glucose levels remains a cornerstone of T2DM management.</li><li>Metformin, one of the world's most prescribed first-line medicines for T2DM, traces its origins to compounds identified in Galega officinalis (goat's rue).</li><li>Emerging evidence suggests Momordica charantia (bitter melon), chromium, and magnesium may support healthy glucose metabolism and insulin sensitivity.</li><li>Explore the evolving role of complementary medicines in supporting metabolic health alongside lifestyle and conventional care.</li></ul>

Key highlights

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