A new study has found that consuming turmeric or its active ingredient curcumin may help lower blood pressure in patients with diabetes and prediabetes.
The study was published in the renowned scientific journal Endocrinology, Diabetes & Metabolism. According to the study, consuming curcumin or turmeric supplements significantly reduced systolic blood pressure (the top number), especially in people who already had high blood pressure,
According to the World Health Organization (WHO), in 2022, 14% of people over the age of 18 worldwide were suffering from diabetes. Diabetes causes high blood pressure by damaging the blood vessels and kidneys, which makes the heart work harder and increases the risk of heart disease. This study was conducted on 855 patients with prediabetes and type 2 diabetes. During the study, the effects of turmeric or curcumin supplements on blood pressure were examined.
The researchers also included studies published up to August 2025 in the results of this latest study and also examined changes in systolic and diastolic blood pressure. The study revealed that the use of turmeric or curcumin reduced systolic blood pressure by an average of 2.69 millimeters of mercury, and this reduction was seen up to 3.41 millimeters of mercury in people who already had high blood pressure.
The greatest benefit was seen in patients with prediabetes or type 2 diabetes and in obese individuals who were taking more than one gram of turmeric or curcumin supplements daily. Those who were taking turmeric or curcumin with black pepper (piperine) also benefited the most.
According to the researchers, there was no overall significant reduction in diastolic blood pressure (the bottom number), but some reduction was noted in patients with type 2 diabetes.
The research said, no serious side effects were reported in any of the studies, which shows that turmeric or curcumin supplements are relatively safe. Experts say that turmeric can be a helpful way to lower blood pressure, but it cannot be used as a substitute for conventional treatment without a doctor’s advice. Researchers said more research is needed on the topic to better understand the optimal dosage, form, and long-term effects.
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