Fish oil makes you happy: Psychological distress and omega-3 index

30. October 2009 William Davis (24)
For another perspective on omega-3 blood levels, here's an interesting study in northern Quebec Inuits.

Traditionally, Inuits consumed large quantities of omega-3-rich seal, fish, caribou, and whale, even eating the fat. However, like the rest of the world, modern Inuits have increased consumption of store-bought foods, largely processed carbohydrates. Along with this trend has emerged more heart disease, diabetes, and depression.

A group from Laval University and University of Guelph, both in Canada, examined the relationship of plasma EPA + DHA levels and measures of psychological distress. This group had previously shown that Inuits older than 50 years had twice the plasma omega-3 levels (11.5%) compared to those younger than 50 years (6.5%), reflecting the shift away from the traditional diet.

Psychological distress was measured with The Psychological Distress Index Santé-Québec Survey (PDISQS-14): the higher the score, the greater the psychological distress. (In the graphs, tertile 1 is least distressed; tertile 5 is most distressed. Sorry about the small chart graphic--click on the graphic to make it bigger.)


From Lucas M et al 2009 (http://www.nutrasource.ca/NDI/Assets/Articles/Plasma%20omega-3%20and%20psychological%20distress%20among%20Nunavik%20Inuit.pdf)

"Our main finding was that women in the second and third tertiles of EPA+DHA concentrations in plasma PLs [phospholipids] had a 3 times lower risk of having a high-level PD [psychological distress] score than women in the lowest tertile."

While the relationship is stronger for women, you can see that, the higher the EPA + DHA plasma level, the lower the likelihood of psychological distress. Interestingly, the tertile with the greatest distress and lowest EPA + DHA levels had a plasma level of 7.0-7.5%--far higher than average Americans.

(Plasma levels of EPA + DHA were used in this study, which tend to reflect more recent omega-3 intake than the more stable and slower-to-change RBC Omega-3 Index that we use. Plasma levels also tend to run about 10-20% lower than RBC levels.)

Of course, there's more to psychological distress than omega-3 blood levels. After all, eating fish or taking fish oil capsules won't make money worries go away or heal an unhappy marriage. But it is one variable that can be easily and safely remedied.
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Comments (24) -

  • Boris

    10/30/2009 1:31:07 PM |

    I think your are on to something, Dr. David. Every winter I get sad and depressed. After starting my omega-3 supplements, I noticed that I started feeling "better". I know that's very subjective. We set our clocks backwards 1 hour in a few days. I guess I will get a chance to test the "happy factor" of fish oil soon!

  • Rob McVey

    10/30/2009 2:14:08 PM |

    FYI, Laval is in Quebec, but Guelph is in Ontario (albeit both Canada). Perhaps you'd edit the post.
      --  Rob McVey, Markham, Ont.

  • Haggus

    10/30/2009 3:02:22 PM |

    Just to make it clear, the Univesity of Guelph is located in Ontario.

  • Jim Purdy

    10/30/2009 3:25:04 PM |

    I live in a high-rise apartment building where many of the residents are grouchy old ladies.

    Should I sneak fish oil into their food?

    Or should I move into a building with lots of happy old Inuits?

  • Deb

    10/30/2009 3:27:52 PM |

    I always enjoy and learn so much from you blog. Thank you.
    I have tried taking omega 3 fish oil capsules but they give me acid stomach and fish burps. Any solution to these problems? I have tried the enteric coated ones too.

  • William Trumbower

    10/30/2009 4:13:28 PM |

    I am not surprised at this data.  When I began taking adequate fish oil (7gm EPA+DHA) I noticed an improved mood, memory, and ability to organize my activities.

  • Dr. William Davis

    10/30/2009 5:00:07 PM |

    Rob and Haggus--

    Thanks for the correction.

  • Dr. William Davis

    10/30/2009 5:00:37 PM |

    Hi, Jim--

    Perhaps throw a fish oil party for the ladies!

  • Boris

    10/30/2009 6:13:55 PM |

    Deb,

    You are experiencing the effects of "cheap" fish oil that has a lot of other stuff in it besides Omega-3. I tried Walmart's Nature Made stuff and it made me feel sick. Now I am take Omapure 4x a day (one capsule each time) and I do not feel the same "fishy" burps.

  • Rich S

    10/30/2009 6:48:34 PM |

    Deb-

    Try lemon-flavored liquid form of EPA/DHA. Go with a high quality brand like Carlson, which a lot of us use.

    One tsp gives you 800EPA+500DHA (1300 total), and it actually tastes pretty good (it's not cod-liver oil).

    Buy it online, such as from i-Herb as an example:

    http://www.iherb.com/The-Very-Finest-Fish-Oil-Lemon-Flavor-16-8-fl-oz-500-ml/2796?at=0

    You won't have to swallow all those softgels, which used to bother me.  Also, a good quality distilled fish oil should not cause gastro distress, etc.

    Rich

  • Nameless

    10/30/2009 7:24:58 PM |

    They have done Omega 3 depression studies. I believe they found EPA more important than DHA for improving depression scores. A lot of the 'mood' fish oil supplements tend to be EPA heavy too.

    I think they theorize that EPA helps the brain function, while DHA is primarily for structure (hence why it's important for children/babies).

  • Anonymous

    10/30/2009 8:32:51 PM |

    I think this is an important study, but I have to wonder if low omega-3 might also indicate difficult in fiding adequate food, which would clearly be stressful.  It's a chicken and egg argument so to speak.  Without verying that total nutrition other than omega-3 was adequate, I'm no sure a real conclusion can be made.

  • JD

    10/30/2009 10:37:58 PM |

    The question would be is it the Omega 3's or the fact that those who eat carbs get more depressed?

  • AuntWie

    10/31/2009 4:36:55 AM |

    I've battled depression on and off for most of my life.  Meds help.  Fish oil and lots of vitamin D help even more.  I increase my intake of both whenever my exposure to sunlight is limited (including when the summer heat keeps me indoors a lot.)

  • Anonymous

    10/31/2009 11:41:10 AM |

    So what would be the typical EPA+DHA daily dose (not the oil) to reach these heights of happiness...or plasma levels?

  • Dr Matti Tolonen

    10/31/2009 12:20:06 PM |

    Another recent report from Laval University suggests that highly purified ethyl-eicosapentaenoic acid (E-EPA) may relieve psychological distress in middle-aged women.
    The daily dosage was about 1gram.
    http://www.ajcn.org/cgi/content/abstract/89/2/641
    E-EPA is a very popular omega-3 supplement in Europe and Japan.

  • Dr. William Davis

    10/31/2009 1:32:40 PM |

    In response to several comments--

    Taken in the context of other studies, this study simply adds to the notion that omega-3 intake is associated with mood status.

    While omega-3 plasma levels may also serve as a surrogate for other phenomena, such as vitamin D intake (also rich in fish, though not fish oil), the experience as a whole do indeed show a strong relationship between omega-3 levels and depression/mood/"psychological distress."

  • Red Sphynx

    11/1/2009 2:24:01 PM |

    I'm skeptical of this study.  Look, I expect that, eventually, research will show a strong relationship between mood and LC ω-3.  But this study ain't it.

    First off, this is an observational study.  When observational studies turn up order-of-magnitude differences, they point to cause-and-effect relationships.  But when they turn up relationships that barely pass the statistical significance test (p ~ .05) they are more likely measuring the shared influence of some other cause.

    And what might this cause be?  Well, the authors point out (a) seafood consumption varies upwards with wealth and income.  (b) Happiness varies upwards with wealth and income. (c) They really would have liked to have controlled for wealth and income but they couldn't because the Inuits wouldn't fill out the wealth and income portion of the questionnaire.  

    So their study was underpowered to measure one of the most obvious non-physiological explanations of the (weak) correlation they found.

    This study would have us believe (a) Inuits have much higher ω-3 levels that other Quebec citizens.  (b) The suicide rate among Inuit in 1987–1994 was 6.5 times higher than in the rest of Québec, and the rate in the younger age group (15–
    24 years) was 20 times higher. (!!) (c) ω-3 is associated with better mood.

    Something is pretty discordant there.

    I'll wait for an intervention study.

  • Dr. William Davis

    11/1/2009 9:38:06 PM |

    Hi, Red-

    That's right.

    This study, taken in isolation, proves nothing. It only adds to the other observations that suggest that omega-3 may exert an effect on ADHD, bipolar illness, depression, etc.

    The fact that there appears to be concordance across different populations, though with differing frequencies of depession, is the argument of importance.

  • Dr. William Davis

    11/1/2009 9:38:13 PM |

    Hi, Red-

    That's right.

    This study, taken in isolation, proves nothing. It only adds to the other observations that suggest that omega-3 may exert an effect on ADHD, bipolar illness, depression, etc.

    The fact that there appears to be concordance across different populations, though with differing frequencies of depession, is the argument of importance.

  • Razwell

    1/26/2010 6:40:33 PM |

    Fish oil makes me depressed and nauseous and tired . I do not  know what all the fuss is about.

    I use a supposedly good type too, Carlson's.

  • buy jeans

    11/3/2010 10:03:25 PM |

    A group from Laval University and University of Guelph, both in Canada, examined the relationship of plasma EPA + DHA levels and measures of psychological distress. This group had previously shown that Inuits older than 50 years had twice the plasma omega-3 levels (11.5%) compared to those younger than 50 years (6.5%), reflecting the shift away from the traditional diet.

  • Lisa

    5/16/2011 9:13:39 AM |

    Omega-3 is geally great. Improves memory , I'm loosing pounds and I don't feel hungry or depressed (and when I'm depressed I eat soooo much!).  I prefer flax oil of flax seed as a sourse of omega-3.  My body seems to reject fish oil and I think it's not for nothing. The mercury pollution won't do any good.

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Vitamin D and autism

Vitamin D and autism

17. August 2007 William Davis (1)
This has nothing to do with coronary plaque reversal, nor directly with the Track Your Plaque program, but I found Dr. John Cannell's discussion about the possible relationship between vitamin D and autism so compelling that I thought I just had to pass it on.

So, below are Dr. Cannell's latest thoughts. He takes some criticisms along with praise. I think we owe him a lot for continuing to doggedly promote the benefits of vitamin D.




Vitamin D Newsletter


August, 2007



Dear Dr. Cannell:

I saw an article from a Toronto newspaper about autism and vitamin D. I am currently searching for a vitamin D specialist in the Washington D.C. area to perform a medical work up on my daughter to look for vitamin D-related disorders. The reason I am in search of a vitamin D specialist is that I believe I have stumbled upon a complex relationship in my daughter involving her foot pain, vitamin D, and her autism.

In April 2006, a few weeks after my 3-year-old profoundly autistic daughter began refusing her daily PediaSure drink, she began having excruciating foot spasms lasting from 10-30 minutes at a time, several times a week. She would throw herself on the floor, curl her toes, slam her heels against the floor, and rub the tops of her feet against the carpet, all while screaming the entire time. These were horrible for her to endure, and horrible for my wife and myself to watch. This went on for a year.

From what I read, the symptom was perhaps like foot spasms associated with carpopedal syndrome or tetany. But her blood work did not support that at all. Calcium level was normal (10.2 mg/dL); 25-Hydroxy-vitamin D low (23.5 ng/ml); 1,25 dihydroxy-vitamin D normal (24.7). Despite some vitamin D deficiency, I was assured by medical professionals that nothing supported a vitamin D cause of these particular spasms, so vitamin D was dismissed. Because her calcium level was normal, they told me she did not have tetany, and vitamin D could not be the cause of the pain.

All medical consultants were stymied. I made another research effort and found a 2003 article on WebMD that stated vitamin D has been found to have some link to basic, unexplained muscle and bone pain. By chance, vitamin D was the next supplement we had at home to begin giving my daughter to treat her autism. So, in April 2007 we began giving my 4 year-old profoundly autistic daughter Vitamin D supplements. Her foot spasms which had plagued her for a year diminished within days and disappeared within three weeks. She has not had a spasm in over two months.

In addition, we noted clear improvements in her autistic condition which appear to be from the vitamin D supplements. Eye contact went from zero to fantastic. Her vocalizations increased markedly (still only babbling; she remains completely nonverbal). She appears even happier than previously (she has always been a somewhat happy child). (Please note that my wife and I have tried many dietary supplements over the past 1.5 years guided by a doctor and dietician who both specialize in autism. We honestly state that this is the only thing that has ever had a positive effect on my daughter. We have seen nothing else work.)

My daughter and vitamin D have a complicated relationship. By all counts, looking at her lab work and general condition, vitamin D should have played no role in those excruciating foot fits. And yet it is apparently exactly what is involved in them. And, my wife and I believe at the same time her autistic condition has improved from the vitamin D. The foot fits and her autism appear linked; it was not just a coincidence that this autistic child has those mysterious foot spasms, and the link appears to be vitamin D.

And so I wonder if this is just the tip of the iceberg, if perhaps there is more to know about my child's relationship with vitamin D and what that might mean for her autism. Does she have a specific vitamin D-related disorder? If so, might direct treatment of it also improve her autism further? These are the questions I would like to pose to a vitamin D specialist who could perform a medical work up on my daughter. Please let me know if you know of anyone in the Northern Virginia/Washington DC area. Also, where is the best place to get vitamin D? Thank you for your time.

Sincerely,
Paul, Washington, D.C.



Dear Paul:

I know of no such specialist in the Washington area, indeed no vitamin D/autism expert exists in the world. As far as a specific "vitamin D disorder," linking her spasms, autism, and vitamin D, the world's English language medical literature contains no description of such a disorder. From your daughter's case, it sounds as if PediaSure was her only regular source of vitamin D. If so, her spasms began two weeks after stopping the small amount of vitamin D contained in PediaSure. The spasms continued for a year, ending a few days after you started giving her vitamin D again, this time in the form of a supplement. Several weeks after restarting vitamin D, both you and your wife noticed an improvement in her autism. To my knowledge, this "case report" - your daughter's - is the first ever published.

As no medical literature has ever been published on any of this, all you can do is give her enough vitamin D to get her 25-hydroxy-vitamin D, known as 25(OH)D, into high normal ranges and then wait and hope. Vitamin D's extraordinary mass-action pharmacology implies that simply providing more substrate ([25(OH)D] will help children with low enzyme activity produce more activated vitamin D (calcitriol) in their brains. The vitamin D theory of autism is not simply that vitamin D deficiency in gestation or early childhood causes the disorder. Instead, the theory holds that a quantitative or qualitative abnormality exists in the enzyme system that activates vitamin D.

It could as simple as the normal variation in the enzyme, an enzyme whose activity would vary in a normal or Gaussian distribution, much like height. Some people are tall, some are short, most are in the middle. The same may be true of the enzyme that forms activated vitamin D (calcitriol), some children have a lot of enzyme and some only a little; most are in the middle. As the substrate [25(OH)D] the enzyme metabolizes fell over the last 20 years with sun-avoidance, more and more children on the low end of the enzyme curve are effected by marginally low 25(OH)D levels, explaining both its genetic basis and exploding incidence.

At this point, all your daughter needs is a physician willing to periodically measure her 25(OH)D. Then you can safely supplement your daughter with doses higher than the current Upper Limit for children (2,000 IU/day). You did not tell me your daughter's weight but, assuming she weighs about 30 pounds, even without 25(OH)D blood tests, you can safely give her 50 mcg/day which is 2,000 IU per day. In fact, the U.S. government says this dose is safe for children over the age of one. Life Extension Foundation sells 250 of the 1,000 IU capsules for about ten bucks with powdered vitamin D inside. The powder is tasteless and dissolves easily in juice. Bio Tech Pharmacal, of Fayetteville, Arkansas, told me they were going to be making a 1,000 IU capsule. Or you can get 1,000 IU capsules in a pharmacy or at Costco and crush them. A Canadian firm is now making vitamin D liquid, called Ddrops, with 1,000 IU per drop, but their mail order web site is not yet easily accessed. Beware of cod liver oil; do not use it because vitamin A inhibits the actions of activated vitamin D, and due to the potential for low-grade vitamin A toxicity.

Remember, more and more researchers now believe autism is a progressive, inflammatory, disorder. That is, the inflammation probably progressively destroys brain tissue as the child ages. As I said in my recent paper, I think there is a chance that vitamin D may have a treatment effect in young autistic children if given in adequate doses, due to its anti-inflammatory properties, and its ability to upregulate glutathione, the master antioxidant that also chelates (binds) and then helps excrete heavy metals like mercury. Unfortunately, I see no way, even if the vitamin D/autism theory turns out to be true, that vitamin D can regenerate brain tissue. However, if it stops the inflammation, and cell death, the brain could then begin to develop and learn. These are big ifs. However, you have nothing to lose by trying, the worst that will happen is that it will not help and vitamin D will be added to the long list of false-hope treatments.

Actually, there is a worse possibility. Say the parents of a three-year-old autistic child decide today that vitamin D is nonsense, another false hope, and that I'm a quack. They decide not to give vitamin D supplement their autistic child, who is probably - like your child - vitamin D deficient. Then, it turns out five years from now that scientific evidence shows vitamin D does indeed help. By that time, the child will be eight and will have suffered additional, irreparable, brain damage. In my mind, that is more tragic than another false hope.



Dear Dr. Cannell:

After that article appeared in the Toronto paper, I started my four-year-old son on 1,000 IU of vitamin D two weeks ago. So far the only thing I noticed is that after about ten days, he didn't seem so miserable. The thing that has always broken my heart is that look of sadness and suffering on his face. After about two weeks of vitamin D, I noticed he seemed less miserable. I wouldn't say he looks happy now but that look of misery seems to be gone. Will it come back? I'm not sure I can take it if it comes back. What else might happen? Also, last summer we noticed he seemed to get better, but then he got worse in the fall. We never thought about it until we read about vitamin D.

Susan, Toronto, Canada




Dear Susan:

I don't know. I think all parents have had their heart pierced by that look at one time or another. I would advise increasing the dose to 2,000 IU per day, making sure it is cholecalciferol and not ergocalciferol, and having your doctor order a 25(OH)D every two months to see if he needs higher doses. You want to get his blood level up to between 50 ng/ml and 80 ng/ml (In many countries outside of the USA, that would be reported as between 125 and 200 nmol/L.) and keep it there, summer and winter, and that may take more than 2,000 IU/day in the winter. If vitamin D has a treatment effect, it will take many months to see its full effect. As you noted, if the theory is correct, autistic children who spend time outdoors in the summer should show some seasonal improvements - if they don't wear sunblock and they expose enough of their skin to generate significant amounts of vitamin D.



Dear Dr. Cannell:

I resent you calling autism a tragedy. My son is not a tragedy and I'm glad he was born and is in our lives. He is our joy. Autism is not a tragedy.

Emma, London, England.




Dear Emma:

I'm glad he is your joy and I believe you. I'm new to the autism field and was not aware how much thought and speech control exists in the discussion of the disease. Nevertheless, I have a few politically incorrect questions. If autism is a joy, I assume you would like other parents to have an autistic child? If autism is such a joy, why is there a huge industry forming to prevent and treat it? At the risk of sounding insensitive - apparently one of the most serious charges leveled in the autism debate - autism is a tragedy. As I pointed out in my paper, research shows that having an autistic child, puts the family under more emotional stress than having a child with a fatal illness.



Dear Dr. Cannell:

Who are you to write an article on autism? You didn't even publish it in a medical journal. You are not with a university. You have not published very much. You have no expertise on autism. No autism experts support your theory. There is no evidence to support the theory. Shouldn't you leave this to experts before you give parents more false hopes?

Mary, Trenton, New Jersey.



Dear Mary:

You are right, I am a nobody; just ask my ex-wife. In the Toronto Globe, I explained why I have not yet submitted the paper. As far as giving false hopes, I've thought about that charge. Right now, regardless of what advocacy groups say, autism is rather hopeless. That is, no treatment, including vitamin D, has been shown to materially affect the clinical course of autism. As a psychiatrist, my observation is that people would rather live with a false hope than with no hope.

Furthermore, if autistic children began taking vitamin D, the worse that can happen is that a period of false hope will followed by dashed hopes and then parents will be back to hopelessness. In the meantime, they will have made their child vitamin D sufficient. Vitamin D deficiency is a serious problem in childhood.
Postgrad Med J. 2007 Apr;83(978):230-5.

The Telegraph, Why is Vitamin D So Vital?

As far as the theory having no support from experts, Dr. Richard Mills, research director of the National Autistic Society in England, was quoted in the Telegraph article on the autism/vitamin D theory: "There has been speculation in the past about autism being more common in high-latitude countries that get less sunlight and a tie-up with rickets has been suggested - observations which support the theory."

Finally, you said there is no evidence to support the theory. I assume you meant there is no proof. The first statement is absolutely false, the second absolutely true. As I detailed in my paper, there is a lot of evidence to support the theory. In fact, if anyone can come up with an autism fact, that the theory cannot explain, I'd like to know about it. Even the announcement of a link between television viewing and autism supports the theory. Furthermore, the TV/autism link is actually evidence of a treatment effect. That is, if autistic children who play outside in the sunshine more - watching less TV - have less severe illness, it may be due to the Sun-God, who bestows her precious gift of calcitriol into the brains of children playing outside in her sunlight but not into the brains of children watching TV inside in the darkness.
Natl Bur Econ Res Bull Aging Health. 2007 Winter;(18):2-3.

As far as proof the theory is true, there is, of course, none. In medicine, proof means randomized controlled human trials, the gold standard for proof. However, proof is the last step, not the first. First comes evidence, then comes a theory, then comes researchers disproving those theories. It works that way. Sometimes we never get to the last step, proof. For example, please point me to a single randomized controlled human trial proving cigarette smoking is dangerous? Instead, the convincing evidence of smoking's dangerousness lies in epidemiological studies, not randomized controlled trials. Proof, or disproof, of the autism vitamin D theory will take years, years during which young autistic brains will continue to suffer irreparable damage. Perhaps vitamin D' powerful anti-inflammatory actions will help prevent that damage, perhaps not.

It's something of a Pascal's wager, betting on vitamin D instead of the existence of God, risking your child's brain instead of eternal damnation. "If you believe vitamin D helps autism and turn out to be incorrect, you have lost nothing -- but if you don't believe in vitamin D and turn out to be incorrect, your child will suffer irreparable brain damage."

John Cannell, MD
The Vitamin D Council
9100 San Gregorio Road
Atascadero, CA 93422

This is a periodic newsletter from the Vitamin D Council, a non-profit trying to end the epidemic of vitamin D deficiency. If you don't want to get the newsletter, please hit reply and let us know. This newsletter is not copyrighted. Please reproduce it and post it on Internet sites. Remember, we are a non-profit and rely on donations to publish our newsletter and maintain our website.
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Comments (1) -

  • TedHutchinson

    8/17/2007 5:02:00 PM |

    Dr Cannell has added further detail to his Autism/Vitamin d theory at various other online discussions.

    Readers may like to read his contributions to the thread
    Autism suspect #85: Vitamin D deficiency
    on
    The Island of Doubt scienceblogs.com

    Dr Cannell clearly has more patience in dealing with ill informed argumentative fools than I have. I just wish that people would provide the sources of their evidence when making what appear to be outrageous claims.

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