Type 2 diabetes is one of the most pressing global health challenges, affecting more than 800 million people worldwide. Nearly 95% of these cases are type 2 diabetes, a condition closely tied to rising rates of obesity and overweight. Managing weight is one of the most effective strategies for controlling blood sugar and reducing complications, but it often requires a long-term commitment to lifestyle changes and, for many, costly medications.
A new review published in Nutrition & Diabetes suggests that turmeric—a golden-hued spice long valued in traditional medicine—might offer modest support in weight management for people with prediabetes or type 2 diabetes.
The analysis pooled data from 20 randomized controlled trials involving adults with these conditions. Researchers found that turmeric and its active component, curcumin, were linked to small but meaningful reductions in body weight, fat mass, waist circumference, and hip size. On average, participants lost about 2 kilograms (5 pounds) and trimmed an inch from their waistline.
“These may sound like small numbers,” said Thomas M. Holland, MD, MS, of RUSH University, who was not involved in the study. “But in public health terms, even modest reductions in central obesity can lower metabolic and cardiovascular risks.”
How turmeric may help
Turmeric has long been studied for its antioxidant and anti-inflammatory properties. Scientists believe curcumin could play a role in regulating metabolism, enhancing thermogenesis (the body’s calorie-burning process), and reducing inflammation tied to obesity and insulin resistance.
The review also highlighted a dose-response effect: supplementation for more than 22 weeks led to greater reductions in body weight, while higher doses (above 1,500 mg/day) were particularly effective in reducing waist circumference.
“Taken together, these findings suggest turmeric may be most useful as a longer-term supplement at adequate dosages,” said lead researchers Leila Azadbakht, PhD, and Mohammadreza Moradi Baniasadi, MSc, from Tehran University of Medical Sciences.
Not a quick fix
Despite the encouraging findings, experts caution against viewing turmeric as a shortcut to weight loss. The trials varied widely in dosage, formulation, and study populations, with many conducted in Iran, raising questions about whether the results apply broadly.
“Turmeric can be a valuable addition to a healthy lifestyle, but it’s not a substitute for proven approaches like balanced nutrition, exercise, and appropriate medications,” said Eamon Laird, PhD, of Atlantic Technological University. He emphasized that the spice should be seen as a supportive therapy, not a standalone treatment.
Future research, the authors note, will need to explore turmeric’s effects across more diverse populations and test high-absorption formulations. Larger and longer-term trials will be key to clarifying whether the spice can truly make a difference in diabetes management.
For now, turmeric remains a safe and accessible supplement that could offer small but meaningful benefits for people living with prediabetes and type 2 diabetes—especially when paired with lifestyle changes.
