Hormonal
Persistent consumption of beetroot juice can delay postprandial glycemic response and reduce blood glucose peaks, primarily through the action of bioactive compounds like polyphenols and betalains, rather than just nitrate.
If you are concerned about blood sugar spikes after meals, beetroot juice may help delay and reduce these peaks, likely due to its polyphenol content. This effect is seen in healthy individuals and may benefit those with insulin resistance, but results are less clear in established diabetic patients. It is not a substitute for medical management of diabetes.
Similarly, it is shown that the persistent consumption of beetroot juice effectively postpones the postprandial glycemic response and decreases the blood glucose peak... it is suggested that polyphenol- rich beetroot juice might be responsible for the late rise in the early phases of post- prandial glucose or insulin responses
Why this rating
The review notes multiple mechanisms and inconsistent results, with some studies showing no effect on fasting glucose.
Source
Functional properties of beetroot (Beta vulgaris) in management of cardio-metabolic diseases
Parvin Mirmiran et al. · Nutrition & Metabolism · 2020
DOI 10.1186/s12986-019-0421-0
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