Does millet raise insulin levels?

Research consistently shows that millets do not cause harmful insulin spikes and may actually improve insulin sensitivity. A 2021 systematic review in Frontiers in Nutrition demonstrated that millet-based diets reduced insulin index, improved insulin sensitivity, and lowered HbA1c levels in both diabetic and pre-diabetic individuals.

Mechanisms by which millets regulate insulin:

Low glycaemic response: The mean GI of 52.7 leads to slow glucose absorption, reducing the insulin demand on the pancreas.

Pearl millet specifically: Clinical studies show pearl millet improves insulin sensitivity and lowers triglyceride levels, as confirmed by a 2022 study in Biocatalysis and Agricultural Biotechnology.

Alpha-amylase inhibition: Polyphenols in pearl millet and finger millet inhibit key digestive enzymes (α-amylase, α-glucosidase), slowing starch breakdown and postprandial hyperglycaemia.

High dietary fiber: Soluble fiber slows carbohydrate digestion, reducing glucose absorption rate and subsequent insulin secretion.

Magnesium role: Millets are rich in magnesium, a mineral that enhances insulin receptor binding and reduces insulin resistance.

Important note: While millets do not increase insulin excessively, glycaemic response can vary based on processing method — whole grain millet is preferable to highly processed millet products.

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