Salt Sensitivity

Salt Sensitivity: Overview

People who experience a jump in blood pressure when they consume salt are at increased risk of dying from heart disease, according to a study published in the Feb.  16, 2001 supplemental issue of Hypertension, a journal of the American Heart Association.

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The study's findings highlight the potential effects of dietary salt on long-term health.  While not all hypertensive people are salt-sensitive and not all salt-sensitive people are hypertensive, salt-sensitive individuals with normal to high blood pressure are at increased risk of death when they consume lots of salt.

Incidence

Researchers analyzed medical data from about 600 people aged 18 to 80.  The initial analysis showed that nearly 40% of the group had high blood pressure and 50% were salt sensitive.  About 21% died of cardiovascular or other causes during the 25-year study.  Individuals who were deemed salt sensitive and initially had normal blood pressure were just as likely to have died as those with high blood pressure.

The researchers estimate that 26% of Americans with normal blood pressure and about 58% of those with high blood pressure may be salt sensitive.

Diagnosis and Tests

Unfortunately, there is no easy way to test for salt sensitivity.  One method used involves administering a saline solution followed by a diuretic and noting if blood pressure drops more than 10mm.

Treatment and Prevention

Increasing potassium consumption has a beneficial effect of reducing health consequences in those who are salt sensitive.  Potassium typically is higher in fruits (especially bananas) and vegetables than other foods.

Conditions that suggest Salt Sensitivity:

Circulation

Hypertension (High Blood Pressure)

Researchers estimate that 26% of Americans with normal blood pressure and about 58% of those with high blood pressure may be salt sensitive.  [Feb.  16, 2001 supplemental issue of Hypertension]

Coronary Disease / Heart Attack

People who experience a jump in blood pressure when they consume salt are at increased risk of dying from heart disease.  Even salt-sensitive individuals with normal blood pressure are at risk, as blood pressure eventually rises.  [Hypertension (supp), Feb.  16, 2001] Hypertension and salt sensitivity are independent risk factors for cardiovascular disease.

Salt Sensitivity can lead to:

Circulation

Hypertension (High Blood Pressure)

Researchers estimate that 26% of Americans with normal blood pressure and about 58% of those with high blood pressure may be salt sensitive.  [Feb.  16, 2001 supplemental issue of Hypertension]

Recommendations for Salt Sensitivity:

Diet

Processed Foods Avoidance

Processed food often has salt added as a flavor enhancer to encourage product sales.  Significantly reducing processed food consumption is always a good idea.  The general rule is that any food in a package has had salt added.  Look at the labels on the food that you eat.  If the sodium content per 100gm is greater than 0.2gm, the food is high in salt.

Mineral

Salt Intake Reduction

On average, only 10% of dietary sodium comes from salt added to food at the table.  Therefore, beyond eliminating salt from the table, it is recommended that one reduces preserved and processed food consumption and avoids adding excessive salt to food being prepared at home.  Ideally, one should try to reduce daily salt intake to 2,400mg (slightly more than 1 tsp).  People should check food labels and watch out for high sodium items, including such processed foods as luncheon meats, prepared cheeses, canned vegetables, snack foods and baked products.

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