Omega-3 deficiency: signs, risks and advice from doctors
What are Omega-3s and why are they critically important?
Omega-3s are essential polyunsaturated fatty acids that support brain, heart, immune, and vision function. The human body cannot synthesize them on its own, so daily intake with food is a vital necessity.
Main types of Omega-3:
ALA (alpha-linolenic acid) — comes from plant sources
EPA and DHA — found in marine fish, seafood and fish oil
According to cardiologist Olena Tokar, “Omega-3s aren’t just about preventing heart attacks. They’re daily lubrication for your blood vessels and brain cells.”
How to recognize an Omega-3 deficiency
Signs of Omega-3 deficiency can be general and gradually increasing:
dryness and peeling of the skin
brittle nails, brittle hair
constant fatigue, irritability
depressed mood, anxiety
difficulty concentrating
frequent colds, inflammatory diseases
joint pain
dry eye syndrome
in children - hyperactivity, learning difficulties
As nutritionist Natalia Litvin notes, “One of the most common manifestations of Omega-3 deficiency in patients is not worsening heart condition, but impaired cognitive function, mood problems, and visual strain.”
Causes of Omega-3 deficiency
| Reason | How does it affect |
|---|---|
| Lack of fatty fish in the diet | Low intake of DHA and EPA |
| Predominance of Omega-6 in the diet | Fatty acid competition that reduces Omega-3 absorption |
| Fat malabsorption | Chronic intestinal diseases, pancreatitis, gallstone disease |
| High needs | Pregnancy, lactation, sports activities, stress |
| Dietary restrictions | Veganism or a strict plant-based diet without EPA/DHA alternatives |
Endocrinologist Andriy Marchenko notes: “Low Omega-3 levels are often combined with elevated homocysteine, which increases the risk of cardiovascular catastrophes even at a young age.”
What is the danger of a prolonged deficit?
increased risk of heart attacks and strokes
depression, anxiety disorders
neurodegenerative diseases
worsening skin condition, eczema, psoriasis
hormonal imbalances
immune disorders
in children - decreased mental development, bad behavior, sleep disturbances
How to detect Omega-3 deficiency
The most accurate method is blood test for Omega-3 index, which shows the percentage of EPA + DHA in red blood cell membranes.
<4% — high risk
4–8% — permissible level
8% — optimal level for heart and brain protection
The doctor can also assess the patient's condition based on indirect signs, combined with food diary data.
How to fill the Omega-3 deficiency
Through diet
fatty sea fish (salmon, mackerel, sardines) — 2–3 times a week
flax seeds, chia seeds, walnuts
rapeseed and linseed oil
seafood, avocado, spinach
Through additives
EPA+DHA supplements: 250–500 mg per day for prevention
for children - in a special form and dose
for vegans — microalgae supplements
Dietitian Yuriy Gorbach advises: “Choose certified supplements with high bioavailability. It is especially important to check the source of raw materials and the content of heavy metals.” Additionally, you should be careful with supplements that contain plant extracts, such as Hogweed and its dangers. This plant can cause serious allergic reactions and even poisoning. Therefore, the choice of products should be based not only on their bioavailability, but also on the safety of the ingredients.
Director of Medi Lab Plus LLC, a doctor of the highest category. Has over 45 years of practical experience in medicine and laboratory diagnostics. Founder and head of the laboratory since 2007. More details…
