7 health benefits of fish oil

Fish oils are a good source of omega-3 fatty acids, which can help with memory, heart health and so much more.

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See the many health benefits of fish oil (Photo Getty Images).

See the many health benefits of fish oil. Photo, Getty Images.

This was originally published in August 2014 and has been updated.

It’s no secret that fish oil keeps inflammation down and is important for hearth health. But what you may not know is that its benefits may impact everything from city living and bone density to fat burning and brain power. Here are seven things you may not know about the benefits of fish oils:

1. Reduce symptoms of osteoarthritis
According to a University of Bristol study, omega-3 fish oil could significantly reduce the signs and symptoms of osteoarthritis. Omega-3-rich diets fed to guinea pigs, which naturally develop osteoarthritis, reduced the disease by 50 percent compared to those who ate standard diets.

2. Reduce the signs of aging
Growing evidence suggests that telomere shortening (the DNA at the end of your chromosomes) could be a sign of aging. A 2010 study uncovered a link between blood levels of fish oil and the rate of telomere shortening over five years, suggesting an explanation for the protective effects of omega-3 fatty acids. The study looked at more than 600 patients and found that the higher the blood levels of fish-derived omega-3 acids in patients with coronary heart disease, the longer the telomeres. Adding fish like salmon to your diet at least twice a week is a great way to boost your omega-3 intake.

3. Improve the effects of exercise
When Peter Howe and his colleagues at the University of South Australia studied the effects of diet and exercise on the body, they found fish oil supplements and exercise made for a powerful fat-loss combination. During the study, overweight and obese adults with metabolic syndrome, and a greater risk of heart disease, took omega-3 fish oil daily in combination with moderate aerobic exercise three times a week for 12 weeks. Body fat stores, particularly abdominal fat, were significantly reduced in the fish-oil-plus-exercise group, but not in those who used fish oil or exercise alone.

4. Boost brain power and memory
Researchers have found positive associations between fish oil supplements and cognitive functioning as well as differences in brain structure between users and non-users of fish oil supplements. Compared to non-users, fish oil supplements were associated with better cognitive functioning during the study. In one rat study, there was a clear association between fish oil and brain volume in two critical areas utilized in memory and thinking (cerebral cortex and hippocampus).

5. Preserves lean muscle in cancer patients
Supplementing your diet with fish oil may prevent the muscle loss that commonly occurs in cancer patients who undergo chemotherapy. The trial involved 16 patients who took fish oil (2.2 g of eicosapentaenoic acid/day) and 24 patients who did not. Patients who did not take fish oil lost an average of 2.3 kg whereas patients receiving fish oil maintained their weight. What’s even more interesting is that 69 percent of patients in the fish oil group gained or maintained muscle mass.

6. Improve bone health
When it comes to maintaining bone density, calcium, vitamin D and magnesium shouldn’t be your only supplements. The omega-3 fatty acid DHA is essential for optimal bone health. Researchers compared the effect of an omega-6 DPA and the omega-3 DHA in the growth of long bones in rats. The results showed that the rats fed the omega-6-supplemented diet had the lowest bone mineral content and bone mineral density compared to the rats fed the omega-3-supplemented diet.

7. Protect yourself from the effects of air pollution
Who knew that one of the many benefits of fish oil includes protecting your heart from air pollution? According to a 2012 American study it’s true. Twenty-nine healthy, middle-aged adults received either 3 g of fish oil or a placebo daily for four weeks and were then exposed to unclean air for two hours. Researchers found that those who took the fish oil didn’t have the same negative responses as those who only took the placebo.

Natasha Turner, N.D., is a naturopathic doctor and author of the bestselling books The Hormone Diet, The Supercharged Hormone Diet and The Carb Sensitivity Program. She’s also the founder of the Toronto-based Clear Medicine Wellness Boutique and a regular guest on The Dr. Oz Show and The Marilyn Denis Show. For more wellness advice from Natasha Turner, click here

Get omega-3s into your diet by eating salmon. Here are Chatelaine’s favourite salmon recipes:

25 comments on “7 health benefits of fish oil

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  14. I take Salmon oil supplements in my regular diet. It helps me to maintain a healthy weight and acne free skin.
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  15. I wasn’t aware of the telomere shortening impact of omega 3 rich fish oil. Fascinating. I believe one of the major benefits of fish oil is suppression of “silent” inflammation which underlies many disease processes and which can be monitored by simple bloodwork. http://fishoildeal.com

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  20. which of them is good for health; cooking fish oil, olive oil or canola oil ?

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  21. to know the regarding fish oil

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