The Protective Effects of Ginger on Diabetic Mellitus: A Potential Strategy for Reducing Diabetic Complications

Diabetes mellitus (DM) is a metabolic disorder characterized by hyperglycemia due to defective insulin secretion in type 1 diabetes (T1DM) or insulin resistance in type 2 diabetes (T2DM). Complications include neuropathy, retinopathy, nephropathy, and cardiovascular disease (CVD), leading to significant morbidity, mortality, and economic burden, accounting for 25% of healthcare spending ($413 billion annually). Hyperglycemia induces oxidative stress and advanced glycation end products (AGEs), damaging nerves, mitochondria, and blood vessels, promoting atherosclerosis and exacerbating hypertriglyceridemia, a key contributor to CVD and neuropathy. Ginger (Zingiber officinale), a widely available herbal medicine, contains bioactive compounds such as 6-gingerol and shogaols, exhibiting antioxidant, anti-inflammatory, and hypoglycemic properties. Unlike conventional diabetic medications, ginger has a strong safety profile with minimal side effects. Studies indicate that a 25 mg/kg dose effectively lowers blood glucose and prevents diabetes-induced kidney damage by reducing creatinine and urea levels. Additionally, gingerols-enriched ginger (GEG) has been shown to alleviate diabetic neuropathic pain (DNP) by reducing pain sensitivity, improving anxio-depressive behaviors, and modulating mitochondrial function and neuroinflammation. GEG treatment reduces elevated DRP1, a mitochondrial fission marker, and decreases MFN2, a mitochondrial fusion marker, suggesting its role in improving mitochondrial health and reducing neuropathic pain. These findings highlight ginger as a promising adjunct therapy for diabetes and its complications.