Insulin and High Blood Pressure

Elevated insulin can lead to high blood pressure because on insulin’s effect on two essential electrolytes: magnesium and sodium.
Elevated insulin levels cause the body to excrete magnesium. When magnesium levels are low, blood vessels constrict causing blood pressure to rise. A long-standing elevated blood pressure increases the risk of heart disease, stroke, and kidney failure.
When insulin levels are elevated, sodium retention is also elevated. This causes fluid retention, which increases blood pressure.