Best And Worst Nuts For Your Health

By Amanda MacMillan

Nuts are nature's way of showing us that good things come in small packages. These bite-size nutritional powerhouses are packed with heart-healthy fats, protein, vitamins and minerals.
Here's a look at the pros and cons of different nuts, as well as the best and worst products on supermarket shelves today. Of course, you can get too much of these good things: Nuts are high in fat and calories, so while a handful can hold you over until dinner, a few more handfuls can ruin your appetite altogether. And although nuts are a healthy choice by themselves, they'll quickly become detrimental to any diet when paired with sugary or salty toppings or mixes.

Best Nuts For Your Diet: Almonds, Cashews, Pistachios

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All nuts are about equal in terms of calories per ounce, and in moderation, are all healthy additions to any diet. "Their mix of omega-3 fatty acids, protein and fiber will help you feel full and suppress your appetite," says Judy Caplan, R.D., a spokesperson for the Academy of Nutrition and Dietetics.

The lowest-calorie nuts at 160 per ounce are almonds (23 nuts; 6 grams protein, 14 grams fat); cashews (16 to 18 nuts; 5 grams protein, 13 grams fat); and pistachios (49 nuts; 6 grams protein, 13 grams fat). Avoid nuts packaged or roasted in oil; instead, eat them raw or dry roasted, says Caplan. (Roasted nuts may have been heated in hydrogenated or omega-6 unhealthy fats, she adds, or to high temperatures that can destroy their nutrients.)

Best Nuts For Your Heart: Walnuts

Flickr photo by Renee Silverman

While all nuts contain heart-healthy omega-3 fats, walnuts (14 halves contain 185 calories, 18 grams fat, 4 grams protein) have high amounts of alpha linoleic acid (ALA). Research has suggested that ALA may help heart arrhythmias, and a 2006 Spanish study suggested that walnuts were as effective as olive oil at reducing inflammation and oxidation in the arteries after eating a fatty meal. The authors of this study, funded in part by the California Walnut Commission, recommended eating around eight walnuts a day to achieve similar benefits.

Best Nuts For Your Brain: Peanuts

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Technically legumes but generally referred to as nuts, peanuts are high in folate -- a mineral essential for brain development that may protect against cognitive decline. (It also makes peanuts a great choice for vegetarians, who can come up short on folate, and pregnant women, who need folate to protect their unborn babies from birth defects, says Caplan.) Like most other nuts, peanuts are also full of brain-boosting healthy fats and vitamin E, as well. One ounce of peanuts (about 28 unshelled nuts) contains about 170 calories, 7 grams protein, and 14 grams fat.

Worst Nuts For Your Diet: Macadamia Nuts, Pecans

Flickr photo by Susan Sharpless Smith

Ounce for ounce, macadamia nuts (10 to 12 nuts; 2 grams protein, 21 grams fat) and pecans (18 to 20 halves; 3 grams protein, 20 grams fat) have the most calories -- 200 each -- along with the lowest amounts of protein and the highest amounts of fats.

However, they're still good nuts: The difference between these and the lowest calorie nuts is only 40 calories an ounce. As long as you're practicing proper portion control and not downing handfuls at a time, says Caplan, any kind of raw, plain nut will give you a good dose of healthy fats and nutrients. 

Best Nuts For Disease Prevention: Almonds

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Relatively low in calories, almonds have more calcium than any other nut, making them a great food for overall health. Plus, they are rich in fiber and vitamin E, an antioxidant that helps fight dangerous inflammation and possibly health conditions such as lung cancer and age-related cognitive decline.

Because they're so versatile, almonds are often a favorite among nut eaters: You can buy them raw, toasted, slivered or coated with a variety of fun flavors.

Best Nuts For Men: Brazil Nuts, Pecans

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Creamy Brazil nuts are packed with selenium, a mineral that may protect against prostate cancer and other diseases. Just one nut contains more than a day's worth, so eat these sparingly: Recent research has hinted that too much selenium may be linked to type 2 diabetes risk. One ounce of Brazil nuts (6 nuts) contains about 190 calories, 19 grams fat and 4 grams protein.

Pecans are also good for men's health: They're loaded with beta-sitosterol, a plant steroid that may help relieve symptoms of benign prostatic hyperplasia (BPH), or enlarged prostate. One ounce of pecans (18 to 20 halves) contains about 200 calories, 21 grams fat and 3 grams protein. 

Best Snack Packaging For Nuts: 100- To 200-Calorie Packs

Because nuts are so high in calories (and so tasty, to boot!), it's important to practice portion control when eating them as a snack. We love Blue Diamond Almonds 100-calorie snack packs, available in six flavors, including Cinnamon Brown Sugar and Dark Chocolate.

Want more variety? Pick up Planters Nutrition Wholesome Nut Mix on-the-go packs, each containing a 200-calorie mix of cashews, almonds and macadamia nuts.

Worst Snack Packaging For Nuts: Anything In A Tub

We're all for buying in bulk to save money and packaging, but it's important not to snack straight from the box (or in this case, the giant tub) when a craving hits. Beer Nuts' "original" formula -- peanuts coated with a sweet and salty glaze -- aren't a bad choice themselves (170 calories, 14 grams fat and 2 grams sugar per ounce), but if you're munching on them at a party or during a "long day of game watching," as the company's website suggests, you'll likely be eating more than the recommended serving size. Not to mention, the Party Mix variety also includes M&Ms and sugary yogurt-covered raisins, for an extra calorie boost. A better bet is Beer Nuts' Original Teaser Peanut Sized bags, each containing just half an ounce of nuts.

Best Nuts For Chocolate Lovers: Cocoa-Dusted Almonds

Rather than hiding your nuts under a thick layer of sugary chocolate candy -- think Jordan almonds or peanut M&Ms -- keep it simple with Emerald's Cocoa Roast Almonds. These nuts are lightly dusted with cocoa powder and sweetened with Sucralose, and have 150 calories, 13 grams fat and 1 gram of sugar per ounce.

We'd give you a "worst" nuts for chocolate lovers, but the possibilities are practically endless. Just think of it this way, says Caplan: Anything that's more chocolate than nut really should be considered candy -- not as a way to get your daily quota of healthy fats.

Best Nuts For A Sweet Tooth: All-Natural Glazed Nuts

Want something sweet and satisfying but without the extra calories and high-fructose corn syrup? Look no further than Sahale Snacks glazed nuts, in flavors like Almonds with Cranberries, Honey, and Sea Salt (160 calories, 11 grams fat, 5 grams protein per ounce) or Cashews with Pomegranate and Vanilla (150 calories, 10 grams fat, 4 grams protein per ounce). They're sweetened with organic cane juice and tapioca syrup, and each contains only 6 grams of sugar per ounce. Just be careful not to eat the whole bag!

Worst Nuts For A Sweet Tooth: Check Labels For Sugar Content

Just because something has nuts in it doesn't make it good for you, says Caplan: "Don't justify eating a Snickers because it's got peanuts in it." Anything coated with or tucked inside layers of sugar, toffee, chocolate or ice cream isn't going to give you much nutritional benefit, and the calories can quickly add up, she says.

It's not just candy, though: Beware of seemingly healthful varieties, like Planters Sweet 'N Crunchy Peanuts. Although they still have just 140 calories and 8 grams fat per ounce, the second and third ingredients after peanuts are sugar and butter. In fact, one ounce contains 13 grams of sugar (in just a 28-gram serving size). Considering peanuts only have about 2 grams of sugar naturally, that's 11 grams of added sugar in just one handful, out of a recommended 25 for the whole day!

Best Nuts For A Salt Craving: Look For 'Lightly Salted'

If you don't have high blood pressure or haven't been warned away from salt by your doctor for other reasons, a handful or two of salted nuts a day won't hurt you, says Caplan, who has a private nutrition practice in Vienna, Va.

Nuts are, of course, available unsalted. But to satisfy a salty craving without going overboard, look for in-between varieties like Planters Lightly Salted peanuts, almonds, and cashews (45-55 mg sodium), or Wonderful Pistachios Lightly Salted (80 mg). Check ingredient labels, too: Some brands, like Back to Nature Salted Almonds (75 mg sodium), contain less salt than others.

From Health.com