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I read with interest a recent question regarding use of Omega-7s (which I had never heard of!). I have had continuing itchy skin problems even with a strict gluten-free, soy-free, paleo-type diet. Decided to eliminate the fish oil and cod liver oil. Lo and behold, itchiness has disappeared.

Has anyone else had negative symptoms that they can trace to Omega-3 supplements?

With the money I will save on fish oil, I can buy a second home.

Kidding. Sort of.

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Coudl it be the type of Fish Oil youwere using? Not that I woudl know the difference but just thinking the pure-er the better? – KL Mar 8 2011 at 20:42
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Seconded--From what I have heard, most of the CLO brands are worthless. I have used Green Pasture before and liked it a lot, no skin problems at all (well, no more than I usually have). But I wasn't taking it for the omega-3, I was taking it for the fat-solubles, and in fact I got the CLO/butter oil combo to also get the vitamin K2. – Dana Mar 8 2011 at 21:10
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I've taken many brands over the years but all of them tasted fresh. I used liquids and gel caps and would often bite open the gel caps just to reassure myself that they hadn't gone rancid. – wjones3044 Mar 8 2011 at 21:38
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ethyl ester forms or triglyceride forms? Ive experienced the itch with ethyl ester but not trigs. – Stephen-Aegis Mar 9 2011 at 0:35

9 Answers

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My experiences with straight up tablespoon a day of Nordic Naturals Fish Oil has been softer skin.

Cod Liver Oil might be the culprit. Vitamin A in large doses can lead to itchy dry skin. It is the same effect as taking Accutane, a retinoid drug which dries out people's skin to fight acne (I took it as a teen--if only I knew about Paleo then). If you are taking multivitamins or eating liver or veggie vitamin A sources you might be getting too much.

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Good point. This thought had occurred to me. I cut out both CLO and other fish oils simultaneously, ruining the opportunity to test this. – wjones3044 Mar 8 2011 at 21:39
on accutane they tell you to avoid Vit. A and liver. they don't even recommend using soap cause your skin gets so dry. i've had paleo soap habits ever since. you could add fish oil back in and see if your skin gets even better or just skip it completely cause it sounds like you are doing fine. – MikeD Mar 8 2011 at 21:48
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a recent Robb Wolf guest totally made fish oil use for O3 balance seem silly if you still eat chicken or nuts. so i dunno anymore myself. i think it has anti inflammatory effects that kill small LDL so i continue my oil regimen. a previous discussion on this topic is here, and i posted my thoughts on the LDL fish oil thing there: paleohacks.com/questions/17836/… – MikeD Mar 8 2011 at 21:49
Robb mentions in one of his podcasts that Cordain was against Cod Liver oil. I wish I remembered the details, can probably find the one with a bit of searching. – Lance Jul 7 2011 at 14:41
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Hi, wjones. I guess I'm only answering your one general question and not the other question about itching, because I've never had the itching. But the main answer: Yeah, I'm ditching.

I've been mostly influenced by the Jaminets and by that other thread that Mike D mentions: http://paleohacks.com/questions/17836/unconvinced-taking-fish-oil-supplements-is-a-good-idea My own particular strategy is: steering clear of veggie oil, limiting chicken/pork/nuts, tallow instead of lard, a fish meal at least once a week, and frequent "natural"-brand sardines -- and then if I occasionally supplement, oil instead of pills.

I think the thing to remember is that omega-3s are not really a "supplement." They're fats -- which means they're food! I wouldn't take any other food in the form of a pill, so why would I take my polyunsaturated fats that way?

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And I guess I should add something else since my answer probably doesn't contain anything that isn't already known. Check out this very early thread on rancidity, which might call into question that one can detect it: paleohacks.com/questions/999/… See Melissa's answer. Those fish-oil caplets might be rancid even if they don't obviously taste that way. – Paul Mar 8 2011 at 23:11
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First, you can see how "pre-oxidized" your fish oil is over at this link...ifosprogram.com/ifos/consumerreport.aspx – Kamal Mar 9 2011 at 0:13
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Second...congratulations on becoming a moderator, Paul! – Kamal Mar 9 2011 at 0:14
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Third, I recently switched to the same strategy (fish once a week, sometimes tinned sardines), and it has completely removed my psychosomatic weariness of supplemental oil. – Kamal Mar 9 2011 at 0:16
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No no, that's not what the expiration date means! Click on the links, and you can see what the oxidation results were for a bottle purchased of that particular product (which happened to have an expiration date that they listed). – Kamal Mar 9 2011 at 0:42
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I stopped taking it altogether when I started primarily eating grass-fed lamb. The chicken and pork I eat here and there seems to be balanced out by the salmon, mackerel, shrimp and scallops I eat here and there.

It seems to me that it is most effective as a SAD adjunct that mitigates some of the terrible effects of it.

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Agreed . . . . . – Paul Mar 9 2011 at 0:28
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I resolved to ditch the fish oil. Every day one of my meals is about 100 calories worth of fatty salmon yielding 1.5g of DHA/EPA, there is another .5 in my lamb and all in all I only get about 4.5g of omega 6 so that all works out.

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I stopped taking fish oil for a brief period and my eczema flared up. I started taking the fish oil again and it reduced my eczema symptoms.

Bea Arthur Devany posted this info about fish oil somewhere else, and I think it is very interesting info on oxidized fish oil:

http://www.ncbi.nlm.nih.gov/pubmed/22136711

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+1 I don't understand why Bea Arthur Devany isn't a recognized paleo demigod yet. – lil' Richard frm tx fan Feb 8 2012 at 15:03
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Fish Oil has been ditched, as I eat little O6 overall, little to no chicken/nuts etc. Mostly Grassfed Beef/Fish. I take Fermented CLO however.

Hows your K2 and D intake?

We're you using the Ethyl Ester or Triglyceride form?

How large were your doses?


Im a proponent of the "minimal PUFA intake" camp.

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I've taken megadoses in the past (10-12 grams/day) but not for some time. More recently, I've taken 2-6 grams/day. Ethyl ester form for the most part. K2 and vitamin D intake are good. I'm no longer convinced I need the stuff. Just curious if anyone else has had similar symptoms. – wjones3044 Mar 9 2011 at 16:20
Id blame it on the Mega Doses and Ethyl Ester form. The minimal supplementation is honestly best if you can get your food sources and omega6 intake in check. Best of luck going forward! – Stephen-Aegis Mar 10 2011 at 0:29
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I have ditched the fish oil. In the trash even. I go with Pastured Eggs, Lamb, salmon and oysters.

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I still take my fish oil, never was taking ginormous doses though. I'm not convinced that PUFA ratios need to be as tight as some think they should, nor am I convinced that extremely low PUFA intake is beneficial/necessary. Most all foods are high in PUFAs and biased towards omega-6s - aside from beef (low in PUFA) and salmon (high in omega-3). Doesn't make logical evolutionary sense that our diets should be low in PUFA and 1:1 in omegas if that requires eating a very limited diet.

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I just discovered I have a massive imbalance in Omega 6 and 3s that might be at the root of severe depression. Now my psychiatrist has me completely off all fish oils and a variety of other fats, and I am dosing heavily on raw egg yokes, butter, primerose oil, and a bunch of other specialty oil supplements and electrolytes. Generally speaking fish oil is probably good for most of the population. But for me it was making me sick because it was causing imbalance in my Omega 6's - most specifically Arachidonic Acid, which apparently has a big impact on many neurological and cellular body functioning. I would say anyone serious about there health should get tested for Omega 3 and Omega 6 ratio and overall levels first before mega dosing on Omega 3's. In my case I was making my self sicker by trying to be healthy just because I had an underlying imbalance in my body chemistry.

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