A study in Progress in Lipid Research updated the global Omega-3 Index map, revealing improvements in some regions but highlighting significant data gaps and low levels in many countries, stressing the need for global intervention.
By Hugo Francisco de SouzaReviewed by Susha Cheriyedath, M.Sc.Jun 16 2024 In a recent study published in the journal Progress in Lipid Research, researchers updated the Omega-3 Index map from its first iteration in 2016. They collated available Omega-3 polyunsaturated fatty acids data from studies since 1999, comprising 328 studies of 342,864 participants from 48 countries globally.
"At that time, and based on data then available, an O3I of >8% was proposed as a healthy or optimal target for reducing risk. O3I values of 4%–8% were considered "intermediate," and an O3I 8% . Data extracted from included studies was categorized into PTL, PPL, PPC, RBC, and WB based on each study's fraction of blood analyses. The reported EPA and DHA levels were subsequently converted into O3I as the universal metric. Wherever multiple studies were included for a particular country, a weighted mean of their reported O3I values was used.
"O3I changes from the previous to the current map include 1) USA, Canada, Italy, Turkey, UK, Ireland, and Greece moving from red to orange, 2) France, Spain and New Zealand moving from orange to yellow, 3) and Finland and Iceland moving from yellow to green."
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