Get to Know Potassium and Stop Falling Short


Photo by: vonEisenstein ©vonEisenstein

vonEisenstein, vonEisenstein

Sure, you’ve heard of potassium, but how well do you really know this mineral? Potassium plays a very important role in maintaining good health, but it turns out that it’s a nutrient that many Americans regularly fall short on. In fact, according to a study published in 2012, less than 2 percent of adults get the amount of potassium recommended by the Institute of Medicine’s Food and Nutrition Board. Those recommendations call for adults to consume 4,700 milligrams of potassium daily.

“The best food sources of potassium are fruits and vegetables, and most Americans simply do not eat enough of them to get the potassium they need,” says Alissa Rumsey, M.S., R.D., spokesperson for the Academy of Nutrition and Dietetics. Potassium is an important electrolyte, and it works in partnership with sodium (also an electrolyte) to help regulate fluid balance, muscle contractions and nerve signals. “Most people get too much sodium and not enough potassium, which can throw off this balance,” says Rumsey.

Potassium helps keep blood pressure levels under control, and since it plays a role in muscle contractions, it’s important for normal muscle and digestive function. So how can you increase your potassium intake? Focus on getting several servings of fruit and vegetables every day.

Raw Organic Rainbow Swiss Chard on a Background

Raw Organic Rainbow Swiss Chard

Raw Organic Rainbow Swiss Chard on a Background

Photo by: Brent Hofacker

Brent Hofacker

If you need inspiration, here are some of the top sources of this important nutrient:

Swiss chard: 960 mg per cup

Lima beans: 955 mg per cup

Sweet potato: 950 mg per cup

Spinach: 838 mg per cup

Lentils: 730 mg per cup

Avocado: 727 mg per cup

Tuna: 597 mg per 4 ounces

Salmon: 492 mg per 4 ounces

Broccoli: 457 mg per cup

Cantaloupe: 427 mg per cup

Asparagus: 403 mg per cup

Related Links:

Sally Wadyka is a Boulder, Colorado-based journalist who writes about nutrition, health and wellness.

Next Up

Seriously — Stop Buying Kegs

Consider this your party PSA.

5 Creatine Myths You Should Stop Believing

A sports medicine doctor sheds insight on the popular supplement and why you might want to add it to your routine.

Stop Putting Pumpkin Spice in Your Latte

Or at least save a few tablespoons for dinner...

Get Eggy with It

It’s spring and that means brunch, of course.

Everything to Know About Tomatoes

How to choose, cut, store and cook these juicy jewels of summer.

Everything to Know about Grapes

Including the best varieties for snacking and how to cook with fresh grapes.

Everything to Know about Watermelon

How to select, cut, store and cook with summer’s most quintessential fruit.

Everything to Know About Mangoes

How to choose, store, cut and cook these sweet tropical fruits.

Everything to Know About Apricots

This petite stone fruit packs a sweet-tangy flavor punch.

Everything to Know about Pears

Plus, get our best pear recipes.