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@alex3619 is not a fan
Evening primrose oil can help for some at low doses for short periods. It can also harm. Its a tricky thing to get the dose right over time. I spent years trying to optimise it, but gave up, back in the mid 90s. It will increase cell deformability, but has many hormonal effects too, including inflammatory. Omega 3 fats and monounsaturated fats will also have an impact on cell membrane deformability.
These days I am more in favour of monounsaturated fats, due to them not being used to make inflammatory hormones, but its tricky if you are salicylate intolerant as most sources are high in salicylates, and most of the rest are moderate. Omega-3 fats in moderation are another choice, but I am still careful. Contrary to popular science they are inflammatory for the most part.
The reason they appear anti-inflammatory is that the body will use them over omega-6s, but the 6s are much more inflammatory. There are also anti-inflammatory pathways, but we don't have a means to fine tune them. These polyunsaturated fats lead to dozens if not hundreds of hormones.
Research on this was done in Australia in the early 90s, but most was not published. I was one of the guinea pigs, and pioneered very high dose omega 3.