Skip to main content

Eat more fish....no don't eat more fish!





This article just stresses how confusing the science can be. I suppose we need to remember that the science is usually provisional. One study says one thing then another comes out and points in the opposite direction.

Public health guidance on cardiovascular benefits and risks related to fish consumption

Historically, concerns with fish consumption have addressed risks from contaminants (e.g., methylmercury (MeHg), and PCBs). More recently public health concerns have widened in appreciation of the specific benefits of fish consumption such as those arising from polyunsaturated fatty acids (PUFAs) in fish oil. Fish contains varying levels of PUFAs and MeHg. Since both address the same health outcomes (in opposite directions) and occur together in fish, great care must be exercised in providing public health guidance. Mozaffarian and Rimm in a recent article (JAMA. 2006, 296:1885-99) have made a strong case for the beneficial effects of PUFAs in reducing the risk of coronary heart disease, but at the same time, have also broadly discounted the increased risks of coronary heart disease posed by MeHg in fish, stating that "... among adults... the benefits of fish intake exceed the potential risks." This conclusion appears to be based on an inaccurate and insufficiently critical analysis of the literature. This literature is re-examined in light of their conclusions, and the available and appropriate public health options are considered.



So basically one lot of scientists say that eating fish (fish oils anyway) will reduce the risk of heart disease. Then this lot come a long and say "well, maybe but that would mean you are probably ingesting dangerous levels of Mercury and PCBs!"

Toss a coin then and decide who to believe (or pore over the research?)

Comments

Post a Comment

Popular posts from this blog

Dry January

I mentioned a few weeks ago that I was taking part in "Dry January".  I didn't make a big song and dance about it, but I decided to go for a calendar month or so with no alcohol.  A few people have asked me about my experience, so here are a few points. Why take a break from drinking? Alcohol is an interesting topic.  As a drug it is widely accepted in society, central to so much of our socialising and leisure.  There seem to be lots of health benefits - so we are told - yet there are also a lot of problems in terms of health, relationships and lifestyle that come from drinking. Over a few years I'd begun to become aware and then concerned that I was drinking too much and too regularly.  I am in a busy and stressful job and sometimes a glass of wine after work to relax is really helpful.  But over time, one glass became two.  Two glasses became ....I might as well finish the bottle.  A habit got established....and was starting to get too e...
7 comments
Read more

So where have I been?

You will have noticed that this blog has been quiet for a while....  There are a few reasons for that, reasons that I thought I'd list here: WORK -  my day job has been incredibly busy and stressful this year. Working 10-14 hour days the last thing on my mind when I got home was putting something on here.  FACEBOOK/TWITTER - I suppose I've been using other channels to do some of what I used to do here. Quick fire posts pointing to interesting studies or news etc tend to get posted to Twitter (@chrishighcock) or to the Facebook Hillfit group http://www.facebook.com/groups/263083947097000/  REASSESSMENT - I've found myself less comfortable with some of the positions I've taken in the past. Sometimes I'm embarrassed by some of the things I've promoted. I'm not Paleo or low carb. I think Tabata and intervals are misunderstood and misapplied. I cannot really claim to be HIT.   I find myselfunable  honestly to post things on here and pretend that I am some sort o...
12 comments
Read more

Taking up space for a brief update

I've a couple of posts in draft that I will get up soon -  an update / reflection on Dry January and some thoughts on the scheduling benefits of short workouts if your life is busy.  Before that though, I am pointing to something else. However, I wanted to highlight something that is coming this weekend that I've been involved in.   Amber Rogers (Gokaleo and author of Taking Up Space ) has been pulling together a bundle of books from various authors with a common theme, one that I've been pushing here recently.   Keep it simple, avoid the hype, be patient, be consistent and flee the gurus.   I've talked before about how we get obsessed with pushing for more and more, when enough is OK.  I've given my view that so much of the health and fitness internet world is more like a gnostic religion than something that will benefit your life. There are other voices out there saying similar things and I'll be pointing to a bundle of books later this week ...
1 comment
Read more