“Humans are originally thought to have evolved with a 1:1 ratio of omega-6:omega-3 in their diet. Over the past 100 years the consumption of omega-3 PUFAs [polyunsaturated fatty acids] has declined, alongside an increased consumption of omega-6 producing dietary fatty acid ratios of 15/16:1.” (From “The Role of Lipid Biomarkers in Major Depression” at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5371911/)
“Optimal dietary intakes of the Omega-6 : Omega-3 ratio should be around 1–4 . However, according to the nutritional changes in the Western diet, this ratio has now increased to be within the range of 10 : 1 to 20 : 1. In parallel, there are coinciding increases in the incidence of diseases involving inflammatory processes such as cardiovascular disease, obesity, IBD, rheumatoid arthritis, and cancer. Neurodegenerative and psychiatric illnesses such as AD [Alzheimer’s disease] and depression are other examples.” (From “Health Implications of High Dietary Omega-6 Polyunsaturated Fatty Acids” by E. Patterson, R. Wall, G. F. Fitzgerald, R. P. Ross…
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