These humble nuts are a tasty way to keep your cholesterol in check!

Reviewed by Dietitian Mandy Enright, M.S., RDN, RYT

Key Points

  • Healthy cholesterol levels are important for your cardiovascular health.
  • Walnuts are packed with protein along with key nutrients that support healthy cholesterol levels.
  • Enjoy walnuts as a heart-healthy snack or add them to yogurt, cereal and your favorite healthy recipes.

When it comes to managing cholesterol, the foods you eat can play a significant role in your overall heart health. But there’s one protein that stands out as a true cholesterol-lowering powerhouse, and that’s the humble walnut

In fact, one study involving older participants with healthy cholesterol levels at the start found that eating 1 to 2 ounces of these tasty nuts daily for two years lowered both total cholesterol and LDL cholesterol by an additional 4%.

But why is it so important to maintain healthy cholesterol levels in the first place? “High levels of [harmful] LDL cholesterol can lead to plaque buildup in the arteries, increasing the risk of heart disease and stroke,” says Wendy Bazilian, Dr.P.H., M.A., RDN, a registered dietitian. Conversely, “HDL, [the] so called ‘good’ cholesterol, helps clear excess cholesterol from the bloodstream. I liken it to the garbage trucks circulating around and bringing it back for disposal, breakdown [and] elimination from the body.”

To better understand why walnuts are such a standout in the fight against high cholesterol, we spoke with Bazilian and registered dietitian Samantha DeVito, M.S., RD, CDN, for their expert take on why this nutrient-packed food is the best protein to lower cholesterol. Read on to learn what makes walnuts uniquely suited for heart health and how incorporating them into your diet may lower your cholesterol numbers.

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How Walnuts Can Improve Cholesterol

 For decades, studies have shown that nuts—including walnuts—may promote healthy cholesterol levels. It all started in 1993, says Bazilian, when a landmark study from Loma Linda University put nuts, and walnuts in particular, on the map, highlighting their nutritional attributes. “Since that time, literally hundreds of studies have expanded and confirmed a wide variety of health benefits of nuts,” she says. So, what makes walnuts such a noteworthy addition to a cholesterol-lowering diet? As it turns out, it’s not one or two nutrients, says Bazilian. It’s their entire nutritional package. Here are some unique ways these nutrient-packed nuts can improve cholesterol.One ounce of walnuts (about 14 walnut halves) provides 4 grams of protein. That might not sound like much, but research has found that eating more protein from plants (like walnuts) may significantly lower the risk of developing heart disease. One reason may be that plant proteins tend to be lower in cholesterol-raising saturated fat. Even though these nuts contain a fair amount of total fat (roughly 19 grams per ounce), only 2 grams of that is saturated fat, making them a great choice if you’re watching your cholesterol.Surprising Source of Fiber When you think of fiber, nuts may not be the first food that comes to mind. However, with 2 grams of fiber per ounce (about 14 walnut halves), walnuts are a tasty way to add more roughage to your diet. And that can help with cholesterol management and reduction, says Brazilian.