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Home / Health Conditions / Kidney Disease / 6 Things That Happen to Your Body When You Consume Too Much Salt

6 Things That Happen to Your Body When You Consume Too Much Salt

what does salt do to your body

What does salt do to your body? It should be no surprise to you that too much salt in your diet is a bad thing, however, you may not know exactly why.

If you aren’t aware of salt’s impact on your body, you aren’t alone. In fact, many people are “surprised at the degree to which it can affect them,” says Dr. Cheryl Laffer, a professor of medicine at Vanderbilt University in Nashville, Tennessee. “And at the amount of salt that there is in the American diet.”

According to the Centers for Disease Control and Prevention, about 90% of Americans age 2 and older eat too much sodium. Most of it is in the form of salt, also known as sodium chloride.

Here are six things salt does to the body – and what you can do to protect yourself.

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Let’s start with the heart.

With the circulatory system, salt’s effects are “a very simple plumbing problem,” says Dr. Fernando Elijovich, a professor of medicine at Vanderbilt University.

The heart is the pump and blood vessels are the pipes, he adds. Blood pressure goes up if you increase how much blood has to move through the pipes. Blood pressure also rises if you shrink those pipes.

Salt does both. When there’s excess salt in your system, the heart pumps more blood in a given time, boosting blood pressure. And over time, salt narrows the vessels themselves, which is the most common “plumbing” feature of high blood pressure.

RELATED: Does Cutting Back on Salt Help People With Heart Failure?

The harm can come quickly. And over time.

Within 30 minutes of eating excess salt, your blood vessels’ ability to dilate is impaired, Elijovich shares. The damage from persistent high blood pressure shows up down the road, in the form of heart attacks, strokes and other problems.

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The good news, Laffer says, is the benefits of cutting back on excess salt also show up quickly. If you significantly reduce how much salt you eat, your blood pressure goes down within hours or days.

And keeping it low can make a significant long-term difference. “In the U.K., they actually had a nationwide effort to reduce salt in commercial foods,” she notes. “Within a couple of years, they had reduced the numbers of heart attacks and other bad outcomes. And that was pretty striking.”

It’s a whole-body issue.

Beyond the heart, excess salt can strain the kidneys leading to kidney disease. Part of their function is to

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