Omega-3 (EPA & DHA)
Also called: Fish oil
Essential fats that support the heart, brain, mood, skin, and a healthy inflammatory response. Important in pregnancy.
Supplements can interact with medications and aren't right for everyone, especially during pregnancy or breastfeeding, or with a chronic condition. Ask your provider before you start.
Studied for
- Heart health and triglycerides
- Mood
- Joint pain and inflammation
- Dry eyes
- Pregnancy and breastfeeding (DHA)
Found naturally in
- Salmon
- Sardines
- Mackerel
- Anchovies
- Flax, chia, and walnuts (plant ALA, which converts poorly)
Label red flags
- '1,000 mg fish oil' on the front, but only ~300 mg EPA + DHA on the back
- A strong fishy smell or taste, which suggests the oil has oxidized
- No mention of third-party testing for purity, heavy metals, and freshness
Check with a provider
- Taking blood thinners or antiplatelet drugs, or having surgery soon
- Fish or shellfish allergy
- History of atrial fibrillation (higher doses have been linked to increased risk)
Usually found in fish oil softgels, prenatal DHA softgels, some multivitamin packs. Browse Dr. Lesher's dispensary
Parts of the body it affects
Explore what each area does and the conditions that can affect it.
Brain & nerves
Your brain, spinal cord, and nerves carry every signal in your body, from movement and sensation to mood and memory.
Joints
Joints let your bones move smoothly. Swelling and morning stiffness, rather than ache alone, can point to inflammation.
Illustrations: Servier Medical Art, CC BY 4.0
Ready to find the root cause?
Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.