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Which Salmon Should I Buy?

Lisa Gosselin
March 14, 2012
Which salmon should I buy?
Which salmon should I buy?

I went to two dinner parties recently and guess what was served at both? Salmon. It made me wonder: is salmon the new steak? If so, great! I LOVE this fish and am perfectly fine with that. My doctor probably is, too: the new U.S. Dietary Guidelines recommend Americans eat two servings of fish a week. There are so many different types of salmon, which is loaded with heart-healthy, brain-boosting omega-3 fats, and ways to serve them that it would be hard for me to get bored with this fish.

Recipes to Try: Easy Salmon Cakes and More Delicious Salmon Recipes

But that said, there are certain types of salmon that I try to stay away from and certain questions I always ask before I buy. Here are 7 tips to help you buy the best salmon, which I reported on with Rowan Jacobsen in the March/April 2012 issue of EatingWell Magazine:

1. Wild or farmed?
The first choice you should make is whether to buy wild salmon (and all Alaskan salmon is wild-caught) or farmed Atlantic salmon. In most instances, I opt for wild salmon. Why? Environmental groups such as Seafood Watch and the Environmental Defense Fund, have put nearly all farmed salmon on their "red" or "avoid" list. The reason: many farms use crowded pens where salmon are easily infected with lice, may be treated with antibiotics and can spread disease to wild fish (one reason Alaska has banned salmon farms). In addition, it can take as much as three pounds of wild fish (and fishmeal) to raise one pound of salmon. However, there's some good news. Salmon farmers are currently in talks with environmental groups about improving their practices and there is a proposal before Congress to set standards for aquaculture. Already some farms, such as Sweet Spring in British Columbia, are raising coho in closed pens, that reduce the impact on wild fish. Others, such as Verlasso in Patagonia, are using feeds fortified with the omega-3 EPA, which helps cut back the ratio of pounds of fish needed to feed the salmon to 1-to-1.

2. Should I buy organic salmon?
There is no USDA organic standard for salmon and no guarantee an "organic" label means anything except the salmon was farmed.
Related: 12 Foods You Should Buy Organic

3. Is fresh salmon better than frozen? What about canned or packaged salmon?
You can order fresh salmon by mail order or find it in your markets from June-September. Most fish is flash-frozen when caught to preserve its freshness and allow for shipping. Frozen salmon is good for up to four months, when properly frozen and thawed overnight in the refrigerator. Canned wild salmon is an excellent and economical choice. Look for BPA-free cans (Wild Planet has these) or better yet, pouches.
Related: 3 Tips for Buying the Healthiest Canned Tuna

4. Does salmon carry PCBs or other toxins?
Wild Alaskan salmon, which spend most of their lives in open oceans, generally have very low levels of toxins. Coastal and farmed salmon, depending on the fish and meal they are fed, may have higher levels. The Environmental Defense Fund lists farmed Atlantic salmon as an "Eco-Worst" choice and recommends people eat no more than 2 servings a month due to high PCB levels.
Related: 7 Simple Ways to Detox Your Diet and Your Home

5. Do different types of salmon taste different?
There's a wide range of price, color and taste among the six species of salmon we commonly eat, so it depends on your budget, what's available and the recipe you have in mind. The largest (and often most expensive), the king or chinook, is prized for its high fat content and buttery texture and is rich in omega-3s. Sockeye, an oilier fish with deep red flesh, is also high in heart-healthy omega-3s but has a stronger flavor and stands up well to grilling. Coho is milder and often lighter in color. Pink and chum are smaller fish and most often used in canning or smoking and are good budget choices. Last, the most common fish you will find at the market, the species known as Atlantic salmon, is a farmed species. It has a rich, fatty taste but is not recommended by environmental groups (see Question #1).

6. Why is some salmon more orange than others?
Ever wonder why salmon flesh is orange? Thank carotenoids, the same pigments that make carrots orange. Those magical antioxidants combat the damaging effects of free radicals. The carotenoid in salmon is a particularly potent antioxidant known as astaxanthin, which has been shown to protect against cardiovascular disease, cancer, inflammation, eye diseases, general aging and many other conditions. Astaxanthin is produced by phytoplankton, tiny plants that use it to shield themselves from ultraviolet radiation. Shrimp, krill and other tiny crustaceans then eat the phytoplankton and accumulate astaxanthin in their bodies (which is what makes them pink), and then salmon eat them and store the astaxanthin in their skin and muscles. Sockeye, coho and king salmon have the deepest color orange whereas pink and chum salmon (most often canned) are the lightest. Many farmed Atlantic salmon are given feed with astaxanthin and, in some instances, a manufactured pigment called canthaxanthin, to turn their flesh orange.

7. Are fattier fish healthier?
In the case of salmon, the answer is yes-in terms of both taste and health! Salmon is a fantastic source of DHA, the omega-3 fatty acid that is essential for brain development, which comes from phytoplankton. DHA is stored in salmon's fat, most often in the belly, and one 4-ounce serving of salmon can dish up 2,400 mg of omega-3s. Larger species, such as king, and those that have longer upstream journeys, tend to store more fat and have more omega-3s. Farmed salmon are often fattier than wild salmon but that's because they are fed a diet that includes grains and vegetable oils high in omega-6 fats, which combat the beneficial effects of omega-3s in the body. However the higher fat content (often as high as 16% versus 8% for wild fish) means the fish is easier to cook and retains its moistness.

Related: 4 More Top Food Sources of Omega-3 Fats


Lisa Gosselin is the editorial director of EatingWell Media Group, publisher of the award-winning EatingWell Magazine, books such as EatingWell 500-Calorie Dinners and EatingWell in Season: The Farmers' Market Cookbook, EatingWell.com and EatingWell Custom Publishing. She lives in Vermont, near EatingWell's headquarters and Test Kitchen.


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