Fish Twice a Week: The Simplest Omega-3 Habit

Omega-3 fats are a type of fat found in fatty fish and some plant foods. Researchers study them because they may affect inflammation, which is the body's response to irritation or injury.

Most of the studies here concern supplements, not fish meals, so they do not tell us how much fish to eat. Twice a week is an easy habit to try. It is not a number these sources prove.

• Omega-3 may give a modest benefit in rheumatoid arthritis, though the evidence is limited. Two studies support it for that condition [R20][R22].
• For osteoarthritis, an older review could not recommend omega-3 based on the evidence available up to 2009 [R22].
• Whole-diet patterns, such as Mediterranean or plant-based eating, are linked to less pain and better function in osteoarthritis [R21]. "Linked to" is the right phrase here. It is not the same as proven.
• Anti-inflammatory diet components are associated with lower inflammatory markers in rheumatoid arthritis. A diet complements treatment; it never replaces it [R23].

We use four levels: strong, moderate, limited and insufficient.

Item	Evidence level	What the sources say
Omega-3 supplements, rheumatoid arthritis	Limited	Some evidence of a modest benefit [R20][R22]
Omega-3 supplements, osteoarthritis	Insufficient	Not recommended on the evidence to 2009 [R22]
Whole-diet patterns (Mediterranean, plant-based), osteoarthritis	Limited	Linked to less pain and better function; an association, not proof [R21]
Turmeric (curcumin)	Insufficient	Promising in the lab, not enough clinical evidence [R20]
Ginger	Insufficient	Evidence is unclear [R20][R22]

1. Pick a fish habit you can keep. Start with one or two meals a week. Canned fish can be a practical option too.
2. Swap rather than add. Replace one meat meal with fish, or add fish to a salad or wrap.
3. Set up your kitchen for sitting. If standing at the stove is hard on your shoulders, sit at the table to prepare food, and keep heavy pans on a low shelf.
4. Eat a varied diet. Whole-diet patterns are linked to better outcomes than any single food [R21].
5. Check before taking supplements. If you take blood thinners or other medication, talk to your pharmacist or doctor before you start any omega-3 or herbal supplement.
6. Track how you feel. Note changes over several weeks, and bring the notes to your clinician.