When your body becomes resistant to insulin, it makes more insulin to compensate, and that extra insulin can make your kidneys hold onto too much salt, which over time can lead to high blood pressure.
Evidence from Studies
Supporting (1)
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Insulin sensitivity in the pathogenesis of hypertension and hypertensive complications.
The study shows that having insulin resistance and high insulin levels can raise blood pressure, partly by making the kidneys hold onto more salt, which supports the idea in the claim.
Contradicting (1)
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Role of Hyperinsulinemia and Insulin Resistance in Hypertension: Metabolic Syndrome Revisited.
The study looked at whether high insulin levels from insulin resistance actually cause long-term high blood pressure, and found that they usually don’t — other factors are more important.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.