There is one thing I would like to mention about polyunsaturated fats that I have not mentioned before, and there seems to be very little, if any, information about on the Internet. As I pointed out before in my article Thyroid Challenges, there are people out there, like Dr. Ray Peat, who clearly presents facts taken from numerous decades of research showing how unhealthy polyunsaturated fats truly are for the body.
Polyunsaturated fats produce endotoxins which get stored in the liver. Those endotoxins prevent the liver from successfully producing glucose to feed the body. They suppress liver function. However, they do far more than just producing endotoxins. Polyunsaturated fats also act like cortisol in suppressing the immune system. The more polyunsaturated fats we eat, the more we suppress our immune systems. Of course in the short run this may not seem all that bad since suppressing the immune system can alleviate allergies and take care of many other symptoms associated with histamine production. Nevertheless, in the long run a suppressed immune system allows toxins of all kinds to slowly build in the body and get stored away because the immune system is not triggered into activation by them. Therefore the immune system does not work to kill the toxins and rid them from our tissues.
Eventually the toxins can become so great that we fall sick, but the sickness can then be far worse than if our immune system had been well and keeping up with its job. The built up toxins also overload the organs and place a large amount of strain on them, aging them more quickly and possibly shortening lifespan and most certainly the quality and integrity of the body.
One thing I think is important to keep in mind is that if you start weaning yourself off polyunsaturated fats, do it slowly. If you stop consuming polyunsaturated fats the liver will start to heal and the immune system should start to wake back up in time. Depending on how many toxins you have in your body from years of suppressing the immune system, this could cause you to become ill if you try to do it too quickly as the immune system starts working and attempting to clean the body from stored toxins.
Just a word of caution.