Is fish oil bad for a-fib? I've been taking fish oil and am concerned by an article I found on Pubmed that suggests it might actually increase the risk for a-fib. The article is from 2021, has Baris Gencer as the first author, and the title starts with "Effect of Long-Term Marine Omega Fatty Acids..." There's no paywall. It says that high doses are the most likely to pose a threat, but the product I'm taking from my coop seems to have what they call a high dose. I had my second cardioversion recently, and I might be delusional but I'm so hoping to avoid an a-fib recurrence, at least in the near future. I've been kind of lurking here, but when I saw this article I knew this forum would be the place to get a very informed response. And if we need to be cautious about fish oil that's information worth sharing. Thanks so much for any thoughts! https://www.afibbers.org/forum/read.php?9,193127,193127#msg-193127 Thu, 16 Apr 2026 08:38:46 +0000 Phorum 5.2.23 https://www.afibbers.org/forum/read.php?9,193127,193212#msg-193212 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193212#msg-193212 I might stop for a while and see how my Afib reacts.
I thought that the fish oils might be partly responsible for my arteries being relatively clean considering my age and diet.
Also I thought we had to be cautious with EPA and anticoagulants. Any thoughts on this?]]> Steven AFIBBERS FORUM Sun, 05 Nov 2023 10:52:43 +0000 https://www.afibbers.org/forum/read.php?9,193127,193184#msg-193184 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193184#msg-193184 Johnnytiger AFIBBERS FORUM Fri, 03 Nov 2023 16:01:47 +0000 https://www.afibbers.org/forum/read.php?9,193127,193151#msg-193151 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193151#msg-193151
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Madeline

I keep a very high omega 3 index (always > 12 and as high as 18) and it has never been a trigger for afib. I suspect like many things - highly individual.

Hi George, How does one calculate their omega 3 index?

A blood test. These guys have what I consider to be the gold standard (though other labs offer an omega 3 index test). Here is their explanation of omega 3 index: [omegaquant.com]

I should note I neglected to put units on my numbers they are % & my doc wants mine above 12% because of my genetics (for brain health reasons). Also note that a high omega 3 intake comes with the cost of a bleed risk. As a rock climber, my arms look like somebody who takes Warfarin and their INR is out of range on the high side.

More papers on the topic: [pubmed.ncbi.nlm.nih.gov]

More on Rhonda Patrick's Found my Fitness site: [www.foundmyfitness.com]

Harris interview with Peter Attia: [peterattiamd.com]]]> GeorgeN AFIBBERS FORUM Wed, 01 Nov 2023 19:03:44 +0000 https://www.afibbers.org/forum/read.php?9,193127,193150#msg-193150 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193150#msg-193150
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GeorgeN
I keep a very high omega 3 index (always > 12 and as high as 18) and it has never been a trigger for afib. I suspect like many things - highly individual.

Hi George, How does one calculate their omega 3 index?]]> Madeline AFIBBERS FORUM Wed, 01 Nov 2023 16:48:23 +0000 https://www.afibbers.org/forum/read.php?9,193127,193145#msg-193145 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193145#msg-193145 Drummer AFIBBERS FORUM Wed, 01 Nov 2023 06:56:39 +0000 https://www.afibbers.org/forum/read.php?9,193127,193136#msg-193136 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193136#msg-193136 GeorgeN AFIBBERS FORUM Wed, 01 Nov 2023 00:21:11 +0000 https://www.afibbers.org/forum/read.php?9,193127,193129#msg-193129 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193129#msg-193129 KingFizzy AFIBBERS FORUM Wed, 01 Nov 2023 00:02:24 +0000 https://www.afibbers.org/forum/read.php?9,193127,193128#msg-193128 Re: Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193128#msg-193128 Daisy AFIBBERS FORUM Wed, 01 Nov 2023 00:02:08 +0000 https://www.afibbers.org/forum/read.php?9,193127,193127#msg-193127 Is fish oil bad for a-fib? https://www.afibbers.org/forum/read.php?9,193127,193127#msg-193127
I had my second cardioversion recently, and I might be delusional but I'm so hoping to avoid an a-fib recurrence, at least in the near future. I've been kind of lurking here, but when I saw this article I knew this forum would be the place to get a very informed response. And if we need to be cautious about fish oil that's information worth sharing. Thanks so much for any thoughts!]]> Drummer AFIBBERS FORUM Tue, 31 Oct 2023 23:56:44 +0000