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For individuals trying to lose weight or improve their diet, can incorporating more fish help improve overall health?
The American Heart Association recommends eating at least two servings of fish each week (American Heart Association, 2021). The type of fish chosen makes a difference, as fish nutrition and calories vary. Some can have a higher calorie count but contain healthy fat.
Comparing fish calories and nutrition data can be tricky. How it is prepared can significantly change its nutritional makeup, and the exact nutrition also varies depending on the variety. As an example, a half portion of a Wild Alaskan Salmon Fillet contains: (U.S. Department of Agriculture. FoodData Central. 2019)
The following guide includes other types of fish based on USDA nutrition data (U.S. Department of Agriculture. FoodData Central). Fish calories and nutrition are listed for a 100-gram or 3.5-ounce serving.
Research suggests that fatty fish is the best for weight loss and improved health. Certain types of fish contain an essential fatty acid called omega-3. This polyunsaturated fat provides the body with various health benefits, like reducing the risk of heart disease. Studies show that individuals who eat seafood at least once per week are less likely to die from heart disease. (National Institutes of Health. National Center for Complementary and Integrative Health, 2024) Researchers also believe that omega-3 fatty acids may help reduce symptoms of rheumatoid arthritis and could even improve brain and eye health. Essential omega-3 fatty acids can be taken as a supplement. However, research has not shown that supplements can provide the same benefits as eating omega-3 foods. (Rizos E. C. et al., 2012)
The American Heart Association suggests eating a variety of low-calorie fish that include: (American Heart Association, 2021)
The way that the fish is prepared can change the calorie count. Baked, grilled, and broiled fish are usually the lowest in calories.
Fish experts suggest that individuals buy the freshest available. What questions should you ask when visiting the local market?
The fresher, the better. Fish may remain edible for five days after being caught but may not taste as fresh.
How the fish is stored and delivered to the market will impact its taste. Fish should be chilled immediately after catching and kept cold throughout delivery and transport.
If the fish has a bad odor, it is likely not fresh. Fresh fish should smell like seawater. If buying fillets, look for a moist texture with clean-cut edges. If the fish is whole, look for clear eyes and a firm texture.
Buying local fish from sustainable fisheries is recommended but not always possible, depending on where individuals live. There is a Smart Seafood Buying Guide that advises on buying American fish and provides a list of fish with lower mercury levels for health and safety. (Natural Resources Defense Council, 2024)
Sometimes, the fishmonger is the best source for simple and healthy recipes and preparation methods. Use fresh fish within two days, or store in the freezer. When ready to use frozen fish, thaw in the refrigerator and never at room temperature. For individuals who don’t like fish taste, there are a few things to help improve the taste. First, try less fishy types. For example, many report that around 100 calories per serving of red snapper tastes less fishy than heavier fish like salmon. Second, try adding fresh herbs and citrus to manage the taste.
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American Heart Association. (2021). Fish and Omega-3 Fatty Acids. https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/fats/fish-and-omega-3-fatty-acids
U.S. Department of Agriculture. FoodData Central. (2019). Fish, salmon, king (chinook), raw (Alaska Native). Retrieved from https://fdc.nal.usda.gov/fdc-app.html#/food-details/168047/nutrients
National Institutes of Health. National Center for Complementary and Integrative Health. (2024). 7 things to know about omega-3 fatty acids. Retrieved from https://www.nccih.nih.gov/health/tips/things-to-know-about-omega-fatty-acids
Rizos, E. C., Ntzani, E. E., Bika, E., Kostapanos, M. S., & Elisaf, M. S. (2012). Association between omega-3 fatty acid supplementation and risk of major cardiovascular disease events: a systematic review and meta-analysis. JAMA, 308(10), 1024–1033. https://doi.org/10.1001/2012.jama.11374
Natural Resources Defense Council. (2024). The smart seafood buying guide: five ways to ensure the fish you eat is healthy for you and for the environment. https://www.nrdc.org/stories/smart-seafood-buying-guide