Omega threes and sixes. It is complex and the are lots of posts that reflect this but I will try and give you a canned version based on my reading. I have read a lot but do not claim to be an expert.
In most diets high omega six is the primary issue. Omega six is found in most vegetables oils, and seeds and nuts. It is also heavily used in processed food. To cut down on six for most is going to requires significant dietary change. Things are complicated by what we feed out animals as they like us reflect what they eat. So grain fed animals are higher in omega sixes etc than the grass fed stock. Essentially western diet pushes people into an omega three six imbalance.
The key is to try and BALANCE your omega three and sixes and get the full range of omega threes and sixes. Use fish oil as a primary source of omega three and take some flax seed or oil. If you need to cook try and minimise but use a quality virgin olive oil which is about 10% omega six. Refined olive oil can be a lot higher in six 50%. A hand full of mixed nuts should supply quite a lot of omega six but please check for you intake using the link below.
Trials suggest that the optimal uptake of DHA is about 2 grams a day (4-5 tps of a quality oil) It is cheaper in a bottle and easier to take. Something like Carlsons - you'll find it on the web (see link below).
Do not use products containing trans fats (hydrogenated), avoid sugar and particularly fructose based sugars. Ensure you have an adequate supply of minerals including iodine. (seaweed is a useful dietary addition).
GLA -ensure you account for the omega six that comes with the GLA in your balancing act. IF you have high stored levels of long chain omega six GLA may not be needed. A test would be the only certain way to know, so moderation.
3-6-9s - if everything in your diet were perfect at 3-6-9 may be good but in the short term fish oil is possibly better as most people have high levels of omega six, which over time gets stored in body fats membranes etc. You have to redress that balance by providing more three and less six to allow the body over time to rebalance - The body starts quite quickly but the process in some organs does take time - months for breast tissue, more months for brain, and up to years for gluteal fats.
You can get an idea as to fats in foods here
http://www.nutritiondata.com/fatty-acids.html
Three greek diet link on this site is a bit of a read but should help clarify the impacts of omega threes and sixes if you can face all that reading. If your digestion is shot there are some interesting trials on DHA infusions with low level cox blockers being trialed - it is on the fringe but may be a way of giving your fat status a shot in the arm so to speak and bypassing digestive problems till they improve.
It is important to try and get your digestive system working well. You might like to think about a green powder with digestive enzymes and probiotics - Green Frog is quite good -
http://www.vitacost.com/ (they also do Carlsons), veg juicing and adding back pulp as roughage some suggests may help.
Fats play a big part in the liver. I saw one trial in rats where those on a balanced omega three six diet had livers almost half the weight of those on a 1:30 (roughly) omega three to six, which I found fascinating.
And of course the sort of tips you see regularly lots of greens highly colored veg and fruit, fatty fish mackerel etc wild is best, small small amount meat offal is good, lots of variety, some pulses, a few nuts, and limited grains.
There are tests you can get for fat status which if affordable may be a good investment, and lipid specialists. Omega threes do cause blood thinning etc so please do discuss with your medical advisor.
To balance the threes and sixes takes a concious effort and much lablel reading and from personal experience the areas of the supermarket you visit will shink. Do not trust descriptions eg beans in olive oil, as in most products cheaper veg oils are used too.
At the simplest level avoid processed foods, sugar, (or carefully check labels) no trans fats (hydrogenated), ensure adequate mineral intake (whole food variety), the usual generals greens etc..... bin all oils except virgin olive canola and flax, minimise usage in cooking, do not use canola or flax to cook, take some flaxseed of flax oil (see posts), and most important of all get a bottle of fish oil and take at least 4-5tps a day and you could double that maybe. As levels build up over months you will find your "taste" for it will ease back.
Please do some reading of the posts on omega three and six if you can face it, and please ensure you talk to your advisors about dietary changes, who may want to monitor blood fats etc., as we are all different.
I hope this helps. I am sorry I am not able to be more definative but much is still unknown and whilst there are positive trials on omega threes etc largely they have no been followed up in sufficient depth to be able to give definative answers.
Any potential side effects for most are very limited, and there are suggestions that the cancer risk profile may be significantly reduced so you have not got much to loose - but again please do discuss with your doctor.
RB
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