Main causes of shortage
The main reason is insufficient consumption of foods rich in EPA and DHA: fatty sea fish (salmon, mackerel, herring), seafood, flaxseed and camelina oil. Gastrointestinal diseases with impaired fat absorption (celiac disease, Crohn's disease), long-term low-fat diets and excess omega-6 in the diet (sunflower oil, fast food) also lead to deficiency.
What tests should I take?
The key analysis is the omega-3 index (normal >8%). Additionally, the omega-6/omega-3 ratio (optimally 2-4:1), total cholesterol and hs-CRP are checked as a marker of inflammation. You can download a PDF with the results of these analyzes into Axioris - the system will automatically recognize the values and build dynamics graphs, and also remind you of a control study 3-6 months after nutrition correction.
When to see a doctor
Consultation is needed if the omega-3 index is below 4%, severe cognitive impairment or cardiovascular risks. A doctor may prescribe high-dose supplements (1-2 g/day EPA+DHA) for confirmed deficiency. Pregnant women and people with bleeding disorders should take omega-3 supplements only under the supervision of a specialist.
Common mistakes
1) Taking flaxseed oil instead of fish oil - ALA from plants does not convert well into DHA. 2) Ignoring the omega-6/omega-3 balance. 3) Refusal to monitor indicators when taking supplements. 4) Use of uncertified dietary supplements with oxidized fats. In Axioris, you can keep a diary of your supplement intake and track its effect on laboratory markers.