Hypertension
Sodium sensitivity & Genetics
Sodium Sensitivity
Sodium sensitivity refers to how strongly blood pressure responds to changes in sodium intake. Individuals with certain genetic traits tend to retain more sodium through the kidneys, increasing blood volume and blood pressure.
Try This Today
Understanding sodium sensitivity helps personalize dietary recommendations rather than applying a one-size-fits-all approach.
Measure: Compare BP readings after high-sodium meals.
Do: Reduce processed foods for one week and observe changes.
Reflect: Ask whether sodium sensitivity may explain BP fluctuations.
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Relevance
Groups more likely to be sodium-sensitive include: Older adults, Individuals with hypertension, People with insulin resistance, African Americans, Those with kidney disease, Individuals with a family history of hypertension
Insulin resistance further worsens sodium retention because elevated insulin signals the kidneys to conserve sodium.
Relevant labs and measurements include:
Blood pressure trends, Kidney function (Creatinine, eGFR), Fasting insulin, Electrolytes, Urine sodium (when indicated)
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