First of all apologies for the typos in my previous post - didn't check
! Anyway, back again briefly.
Oils can be classified as saturated (mostly found in meats and are solid at room temperature) and unsaturated oils. Mono
unsaturated, Omega-9, is mostly found in olive oil and found to lower LDL cholesterol, and poly
unsaturated which includes the Essential O-6 and O-3 oils - and to confuse things more these oils can be found in many different forms in the chain - some of which are more bio-available (eg EPA and GLA).
Omega-6 may be included in your supplement because it is essential and for the supplement to be balanced and complete it will be there - the compounders are not responsible for what the client eats in the way of food. The best omega-6 is found in evening primrose oil, starflower and blaccurrant seed oil.
Some women to need more of a particular kind of O-6 in the form of GLA because their bodies have problems converting linoleic acid into gamma-linolenic acid and this results iin the production of the proinflammatory and pain-causing prostaglandin PGE2 causing among other things, period pains. As I said it is very complex! It's all a question of balance and a full range of needed co-factors to help keep the body functioning satisfactorily. Dairy foods can also encourage the production of PGE2, as can stress, too much sugar, lack of vitamin B6, magnesium and zinc..
I need to re-read the book above!