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Omega-3 Deficiency Symptom Checklist, Foods, and Favorite Supplements

2025-11-05

The typical Western diet is very high in omega-6 fatty acids (found in vegetable oils like soybean, corn, and sunflower oil, as well as processed foods). While omega-6s are essential, excessive amounts promote inflammation in the body.

Omega-3s (especially EPA and DHA) are anti-inflammatory. The goal is to balance the two.

Humans evolved with an omega-6 to omega-3 ratio of roughly 1:1 to 4:1. The current ratio for most Americans is between 10:1 and 20:1, heavily skewed towards omega-6.

The NIH has set an adequate daily intake level for omega-3.

Omega-3 Deficiency Symptom Checklist, Foods, and Favorite Supplements

However, a lot of people may need more to counterbalance the amount of omega-6's they consume.

Some symptoms of omega-3 deficiency, in relation to omega-6 intake, are:

  • Fatigue
  • Dry or rough skin
  • Cuts and scrapes taking longer to heal than usual or longer than other people
  • More inflammation or joint pain than usual or than others
  • Brain fog
  • Difficulty concentrating
  • Memory problems
  • Mood swings
  • Going from happy to upset over little things
  • Explosive temper
  • Anxiety
  • Depression
  • ADHD-like symptoms (especially in children)
  • Blurred vision
  • Dry eyes
  • High blood pressure
  • High blood triglycerides
  • Irregular heartbeat
  • Cuts and scrapes clot faster than usual or faster than others
  • Getting colds or the flu more often than usual or more frequently than others
  • Flares of autoimmune disease
  • Chronic inflammatory conditions like arthritits, eczema, asthma
  • Dry, flaky, or itchy skin
  • Red, irritated patches on skin
  • Dandruff
  • Brittle hair
  • Hair thinning or hair loss (all over head, not in patches)
  • Soft or brittle nails
  • Difficulty with night vision
  • Poor growth or developmental delays (in children)
  • Behavioral issues such as aggression or hyperactivity (in children)
  • Learning difficulties

Increasing Your Omega-3 Intake

Getting your omega-3 intake from food isn't easy, but it's achievable.

Some foods high in omega-3 are:

1. Fatty Fish: The absolute best sources. A 3.5-ounce (100g) cooked serving provides:

  • Mackerel: ~ 4,580 mg of EPA & DHA (King mackerel is high in mercury; opt for Atlantic or Spanish mackerel).
  • Salmon (especially wild-caught): ~ 2,150 mg (Farm-raised is also a very good source, usually around ~1,800 mg).
  • Herring: ~ 2,150 mg
  • Sardines (canned in oil): ~ 1,480 mg (Also an excellent source of calcium if you eat the bones!).
  • Anchovies: ~ 1,200 mg
  • Tuna (Bluefin): ~ 1,700 mg (Canned light tuna is a more affordable and lower-mercury option with ~250 mg per serving).
  • Rainbow Trout: ~ 1,000 mg
  • Oysters: ~ 670 mg (Also high in zinc).

2. Fish Roe (Caviar): A very concentrated source, with about 6,800 mg per tablespoon, but it's typically consumed in small quantities due to cost.

3. Seaweed and Algae: The only primary plant source of pre-formed EPA and DHA. This is crucial for vegetarians and vegans.

  • Algal Oil: Available in supplement form (softgels or liquid), this is how fish get their omega-3s. It's a direct, sustainable source.
  • Edible Seaweeds (e.g., Nori, Wakame, Spirulina, Chlorella): While not as concentrated as algal oil supplements, they are excellent whole-food sources to incorporate into your diet.

Supplements:

If getting your omega-3 intake via food isn't achievable, you can take omega-3 supplements. Some of our favorites are:

For Adults:

Nordic Naturals Soft Gels (1280mg/ 2 soft gels): Amazon link

Carlson Labs Elite Omega-3 Soft Gels (1600mg/ 2 soft gels): Amazon link

For Kids (and Adults!):

Nordic Naturals Zero Sugar Ultimate Omega Gummy Chews in Tropical Fruit (1200mg/ 2 chews): Amazon link

Barlean's Omega 3 Fish Oil Liquid Supplement for Kids, Chirpin' Slurpin' Lemonade (540mg/ 1.5tsp): Amazon Link