Cashews deliver heart-healthy fats, minerals, and plant protein in a small handful

Cashews are one of the few nuts that contain a meaningful amount of monounsaturated fat—the same type found in olive oil that supports heart health. A one-ounce serving (about 23 nuts) also provides magnesium for muscle and nerve function, copper for bone strength, and zinc for immune response. Unlike almonds or walnuts, cashews have a milder flavor and softer texture, which makes them easier to eat raw or blend into sauces, and their fat content is lower than most other tree nuts, so they fit into calorie-conscious routines without the density of macadamias or pecans.

The practical value of cashews lies in how easily they integrate into meals. You can eat them straight from the bag, toss them into stir-fries, grind them into butter, or soak and blend them into creamy dressings and soups. Because they're less likely to trigger the "handful becomes a bowl" eating pattern that some people experience with more-ish nuts, they work well for portion control.

Key Takeaways

  • Cashews contain monounsaturated fat and magnesium, both linked to heart and bone health in consistent research.
  • One ounce of cashews provides about 5 grams of protein and 9 grams of fat, making them a lighter option than walnuts or macadamias.
  • Raw cashews have a softer texture than other nuts and work well blended into sauces, butters, and creamy dishes.
  • Roasted and salted cashews are shelf-stable for months when stored in a cool, dry place or refrigerated in an airtight container.

Heart health and cholesterol: what the research shows

Studies on cashew consumption have found that eating them regularly is associated with lower LDL cholesterol (the type linked to plaque buildup) and higher HDL cholesterol (the protective type). The monounsaturated fat in cashews appears to be the main driver—it's the same fat that makes olive oil a cornerstone of heart-healthy diets. A serving of cashews also contains phytosterols, plant compounds that actively block cholesterol absorption in your digestive tract.

The effect is modest but measurable. Research published in nutrition journals shows that people who eat tree nuts, including cashews, as part of their regular diet tend to have better cholesterol profiles than those who don't. The benefit shows up most clearly when cashews replace less healthy snacks—swapping potato chips or candy for cashews, rather than adding cashews on top of an already high-fat diet.

If you take cholesterol medication, cashews won't replace it, but they can work alongside it. Talk to your doctor if you're making significant changes to your nut intake, especially if you're on a statin or other heart medication.

Magnesium and minerals: supporting bones, muscles, and energy

One ounce of cashews contains about 82 milligrams of magnesium—roughly 20 percent of the daily target for most adults. Magnesium is involved in over 300 enzyme reactions in your body, including muscle contraction, nerve signaling, and energy production. It's also a structural component of bone, working alongside calcium to maintain density. Many people fall short of their magnesium target, especially if they don't eat leafy greens or seeds regularly, so cashews are a practical way to close that gap.

Cashews also provide copper (about 0.6 milligrams per ounce), which your body uses to form collagen and elastin in connective tissue, and zinc (about 1.6 milligrams per ounce), which supports immune function and wound healing. These minerals work together—you need copper to absorb and use iron, and zinc to set up immune cells. Eating cashews as part of a varied diet means you're getting these minerals in combination with the fiber and other compounds that help your body use them.

How to choose and store cashews for maximum freshness

Raw cashews and roasted cashews both have their place. Raw cashews have a slightly sweeter, more delicate flavor and softer texture, making them ideal for blending into cashew cream or nut butter. Roasted cashews are nuttier and more shelf-stable because the heat reduces moisture and extends storage life. Both are nutritionally similar—roasting doesn't significantly change the fat or mineral content.

When buying, look for nuts that are whole and uniform in color, without visible mold, cracks, or a rancid smell. Bulk bins are cheaper but expose nuts to air and light, so they may go rancid faster. Sealed bags or containers are safer if you're buying in quantity. Check the ingredient list on roasted varieties—some brands add unnecessary oils or salt. Plain roasted or raw cashews need only one ingredient: cashews.

Store cashews in an airtight container in a cool, dry place for up to a month, or in the refrigerator for three to six months. Freezing extends shelf life to a year. If you make cashew butter, store it in the fridge after opening to prevent the natural oils from oxidizing and turning rancid.

Practical ways to add cashews to your meals

The easiest approach is to eat them as a snack—a small handful (about one ounce) with fruit or alongside cheese. But cashews shine in cooked dishes because they soften and blend smoothly. Soak raw cashews in hot water for 15 to 30 minutes, then blend them with vegetable broth to make a creamy soup base that replaces heavy cream. Use the same soaked-and-blended cashews to make salad dressing by mixing with lemon juice, garlic, and water. Roasted cashews work well chopped and scattered over stir-fries in the last minute of cooking, or ground into a powder to coat fish or chicken.

Cashew butter is straightforward to make at home: blend roasted cashews in a food processor for 8 to 10 minutes, scraping the sides occasionally, until the natural oils release and the butter becomes smooth. Store-bought versions often contain added sugar or oil, so making your own gives you control. Use cashew butter on toast, stirred into oatmeal, or as a base for satay sauce.

Potential downsides and who should limit cashews

Cashews are calorie-dense—about 155 calories per ounce—so portion control matters if you're tracking intake. They're also high in omega-6 polyunsaturated fat, which is essential but can promote inflammation if it far outweighs omega-3 intake. This is only a concern if cashews make up a large portion of your fat intake and you're not eating fish, flax, or other omega-3 sources regularly.

Tree nut allergies are serious and cashews are a common trigger. If you have a tree nut allergy, avoid cashews entirely. Peanut allergies are separate—peanuts are legumes, not tree nuts—but some people are allergic to both, so check with your doctor if you're unsure.

Cashews contain oxalates, compounds that can contribute to kidney stone formation in people with a history of stones. If you've had kidney stones, ask your doctor whether you should limit cashews or other high-oxalate foods.

Comparing cashews to other nuts: when to choose them

Cashews have less fat and fewer calories than macadamias or pecans, making them a lighter choice if you're watching intake. They have more protein than pine nuts but less than almonds or peanuts. Walnuts contain more omega-3 fat, which is anti-inflammatory, while cashews are richer in monounsaturated fat. Brazil nuts deliver more selenium, and almonds have more fiber and calcium.

The best approach is to rotate through different nuts rather than eating the same one daily. Each nut brings different minerals and fat profiles, so variety ensures you're getting the full spectrum of what nuts offer. Cashews fit well into a rotation because they're versatile in the kitchen and work in both sweet and savory dishes.

Frequently Asked Questions

Are raw cashews actually raw, or are they cooked?

Cashews labeled "raw" have been heat-treated to remove the toxic shell oil, but not roasted for flavor. They're softer and milder than roasted cashews. True raw cashews in the shell are not sold in stores because the shell contains caustic oils that can burn skin. What you buy as "raw" is safe to eat and has not been roasted for taste.

Can I eat cashews if I'm trying to lose weight?

Yes, but portion matters. One ounce (about 23 nuts) fits into most calorie targets as a snack or part of a meal. Because cashews are less calorie-dense than macadamias or pecans, they're easier to portion than some other nuts. Measure out a serving rather than eating from the bag to avoid overeating.

Do cashews have as much protein as other nuts?

Cashews have about 5 grams of protein per ounce, which is less than almonds (6 grams) or peanuts (7 grams) but comparable to walnuts. If protein is your main goal, almonds or peanuts are stronger choices, but cashews still contribute meaningful protein alongside their minerals and healthy fats.

How long do cashews last after opening?

Roasted cashews in an airtight container stay fresh for three to four weeks at room temperature, or up to six months refrigerated. Raw cashews go rancid faster because they have higher moisture. Freezing extends the life to a year. Smell them before eating—rancid nuts have a noticeably off odor.

Can I make cashew milk like almond milk?

Yes. Soak raw cashews for four hours or overnight, drain, then blend with fresh water (use about one cup of water per half cup of cashews) until smooth. Strain through a fine mesh or nut milk bag. Cashew milk is creamier than almond milk and doesn't need a thickener. Store it in the refrigerator for up to five days.