Together with another long - chain polyunsaturated fatty acid called
arachidonic acid (a member of the omega - 6 family), it makes up 30 % of the
phospholipid content of the human brain and retina (source).
In relation to CVD, elevated blood pressure has been shown to be positively associated with higher intakes of red and processed meat, even though the mechanism is unclear, except that possibly meat may substitute for other beneficial foods such as grains, fruits, or vegetables.32 Mean plasma total cholesterol, low - density lipoprotein cholesterol, very - low - density lipoprotein cholesterol, and triglyceride levels were found to be decreased in subjects who substituted red meat with fish.33, 34 Vegetarians have lower
arachidonic, eicosapentaenoic, and docosahexaenoic acid levels and higher linoleate and antioxidant levels in platelet
phospholipids; such a biochemical profile may be related to decreased atherogenesis and thrombogenesis.34 - 36