Is Trout Bad for Gout? Purines, Omega-3s and Portions
Rainbow trout has about 180 mg of purines per 100 g, in the high band, plus useful omega-3s. How much fits a gout diet, and which swaps are lower.
TL;DR
- Rainbow trout has about 180 mg of purines per 100 g raw, in the high band. A 3-ounce (85 g) portion carries roughly 155 mg.
- It also brings omega-3 fats. Trout was one of the fatty fish in a 2019 study that linked eating such fish to fewer gout flares.
- Between flares, a modest portion once or twice a week can fit for many people. During a flare, lean on lower-purine proteins instead.
Trout isn’t off-limits if you have gout, but it isn’t a low-purine fish either. At about 180 mg of purines per 100 g, it sits in the high band, so how much you eat and how often matter more than whether you eat it at all.
Trout also lands in a useful middle spot. By the newest lab data it has fewer purines than salmon, and it has several times more omega-3 than lean white fish like cod or tilapia.
How Many Purines Are in Trout?
The USDA and ODS-NIH Database for the Purine Content of Foods (Release 2, 2025) lists raw rainbow trout at about 180 mg of purines per 100 g. That figure comes from a single Japanese lab analysis, so read it as “high band” rather than an exact count. Older gout charts usually listed trout a little lower, around 150–165 mg. Either way, it’s a high-purine fish.
| Trout portion (raw weight) | Purines |
|---|---|
| 100 g | ~180 mg |
| 1 farmed fillet (about 79 g) | ~140 mg |
| 3 oz (85 g) | ~155 mg |
| 4 oz (113 g) | ~205 mg |
| 6 oz (170 g) | ~305 mg |
Fillet weight is from USDA FoodData Central. Our charts use four bands: low (under 50 mg per 100 g), moderate (50–100), high (100–200) and very high (over 200).
These numbers are for raw fish. Cooking drives off water, so a gram of cooked trout holds more purines than a gram of raw trout, but the fillet as a whole keeps roughly the same total. The exception is poaching or simmering, when some purines move into the water.
There’s no separate purine data for brook trout, lake trout or steelhead (the sea-run form of rainbow trout), so treat them the same way.
How Does Trout Compare With Other Fish?
| Fish (raw) | Purines per 100 g | Omega-3 (EPA + DHA) per 100 g | Band |
|---|---|---|---|
| Salmon, farmed Atlantic | 250 mg | 2.0 g | Very high |
| Catfish, farmed | 205 mg | under 0.1 g | Very high |
| Atlantic mackerel | 200 mg | 2.3 g | High |
| Tilapia | 185 mg | 0.1 g | High |
| Rainbow trout | 180 mg | 0.7 g (farmed) | High |
| Canned salmon | 110 mg | 1.1 g | High |
| Sea bass | 105 mg | 0.6 g | High |
| Cod | 105 mg | 0.2 g | High |
Purines are from the USDA purine database; omega-3 figures are from USDA FoodData Central.
Two things stand out. First, trout now comes in below salmon. USDA’s recent analyses of US farmed Atlantic and wild sockeye salmon measured about 250–260 mg per 100 g (published salmon analyses range from about 120 to 260, with the lower figures from Asian samples). So trout is no longer the “higher-purine alternative” to salmon that older charts suggested. See is salmon bad for gout for that side of the comparison.
Second, trout’s omega-3 content sits between the oily fish and the white fish. Farmed rainbow trout has a bit over a third of the omega-3 in farmed salmon, but about eight times as much as tilapia.
The Arthritis Foundation lists trout among the high-purine fish, alongside anchovies, sardines and herring. By the numbers, trout sits at the lower end of that group: sardines measure about 280 mg per 100 g and anchovies about 355 mg.
Do Trout’s Omega-3s Help With Gout?
Possibly, in modest amounts. Four findings are worth holding together:
- Fatty fish was linked to fewer flares. In a 2019 Boston University study of 724 people with gout, eating two or more servings of omega-3-rich fish in the previous 48 hours was linked to 26% lower odds of a flare (odds ratio 0.74), after accounting for total purine intake. The fish counted were anchovies, mackerel, salmon, sardines, trout and herring. Omega-3 supplements people took on their own showed no link.
- Omega-3-rich seafood wasn’t linked to gout in a US survey. A 2023 analysis of 12,505 adults in the NHANES survey grouped trout with the omega-3-rich seafood, which showed no association with gout. Omega-3-poor seafood, such as tilapia, catfish and cod, was linked to 8.7% higher odds of gout per extra ounce a day. It’s a one-time snapshot, so it can’t prove cause.
- Big purine days were linked to more flares. A 2012 study that followed 633 people with gout for a year found that those in the highest fifth of purine intake over two days had nearly five times the odds of a recurrent attack compared with the lowest fifth. Purines from animal foods carried more risk than purines from plants.
- Guidelines still say limit purines. The American College of Rheumatology’s 2020 gout guideline conditionally recommends limiting purine intake for people with gout “regardless of disease activity.”
The takeaway: a sensible serving of trout looks like a reasonable trade. A big plate of it, or trout on top of other high-purine foods, is still a big purine day.
How Much Trout Is Reasonable?
There’s no official gram limit, so treat this as a starting point rather than a rule:
- Portion: 3 to 4 ounces raw, about one farmed fillet. That’s roughly 140–205 mg of purines.
- Frequency: once or twice a week between flares, then adjust based on how you do.
- One high-purine food that day: skip the shrimp starter or the second protein.
- Build the rest of the plate low: vegetables, potatoes, rice and low-fat dairy all sit in the low purine band.
- Drink water with it, not beer. The ACR guideline also advises limiting alcohol.
If you log meals, an app like Urica can estimate the purines in a trout dinner from a photo and show whether fish nights line up with your flares.
Trout During a Flare vs. Between Flares
During a flare, leave trout out, or keep it to a small piece if fish is all that’s on offer. Eggs, low-fat dairy and tofu are lower-purine proteins for those days. The bigger priority is treatment: the ACR guideline strongly recommends colchicine, NSAIDs or glucocorticoids as first-line options, so start the plan your doctor gave you early. Drink plenty of water unless you’ve been told to limit fluids. Our guide on how to stop a gout flare fast covers the rest.
Between flares, a trout fillet once or twice a week, with vegetables and a starch, is a solid meal for many people. Even when gout is well controlled, the guideline’s advice to limit purines still applies, so a regular modest portion beats an occasional feast.
How to Cook Trout for Gout
- Bake, grill or pan-fry it. These methods don’t add purines, but they don’t remove any either. They’re fine for a normal portion.
- Poach it when you’re being cautious. Purines dissolve in water. A 2019 PeerJ study of marine fish found that boiling moved purines out of the flesh and into the cooking liquid. Trout wasn’t tested, so treat that as a general principle, and pour the liquid away instead of turning it into a sauce.
- Trout amandine is fine. Almonds are low in purines, about 30 mg per 100 g.
- Skip sugary glazes. The ACR guideline also advises limiting high-fructose corn syrup, which turns up in some bottled sauces.
- Treat smoked trout as a topping. There’s no purine figure for it in the USDA database, but drying concentrates everything, and it’s salty.
Better Swaps for Trout
| If you want | Try | Purines per 100 g | Why it works |
|---|---|---|---|
| Omega-3s with fewer purines | Canned salmon | 110 mg (90–135) | About 1 g of omega-3, more than trout |
| A mild fillet with some omega-3 | Sea bass | 105 mg | About 0.6 g of omega-3, far fewer purines |
| A lean white fish | Cod | 105 mg | Fewer purines, though little omega-3 |
| A lower-purine protein | Eggs or tofu | ~0 / 25 mg | Low band |
Swapping trout for fresh salmon doesn’t lower purines on the latest numbers, and swapping it for sardines or anchovies raises them. See our purine content in seafood chart for the full list.
The Bottom Line
Trout is a high-purine fish at about 180 mg per 100 g, but it’s lower than salmon and sardines by the newest data, and it brings a useful dose of omega-3. Research links omega-3-rich fish, trout included, with fewer flares rather than more, as long as the overall purine load stays sensible. Keep portions to 3–4 ounces, eat it once or twice a week between flares with no other high-purine foods that day, poach it when you want to be extra careful, and skip it during a flare.
Sources
- FitzGerald JD, et al. 2020 American College of Rheumatology Guideline for the Management of Gout. Arthritis Care & Research, 2020.
- Zhang M, et al. Effect of Dietary and Supplemental Omega-3 Polyunsaturated Fatty Acids on Risk of Recurrent Gout Flares. Arthritis & Rheumatology, 2019.
- Zeng G, et al. n-3 PUFA poor seafood consumption is associated with higher risk of gout, whereas n-3 PUFA rich seafood is not: NHANES 2007–2016. Frontiers in Nutrition, 2023.
- Zhang Y, et al. Purine-rich foods intake and recurrent gout attacks. Annals of the Rheumatic Diseases, 2012.
- USDA Agricultural Research Service. USDA and ODS-NIH Database for the Purine Content of Foods.
This article is for informational purposes only and is not medical advice. Talk to your rheumatologist or healthcare provider about your specific situation.
Track Your Personal Response
Everyone responds differently to foods. Urica helps you track how specific foods affect YOUR flare patterns by analyzing purines, fructose, and glycemic load together — not just purines alone.
Frequently Asked Questions
Is trout better than salmon for gout?
On purines, yes, by the newest data. Rainbow trout measures about 180 mg per 100 g, while US farmed Atlantic salmon measures about 250 mg. Salmon has more omega-3, about 2.0 g of EPA plus DHA per 100 g versus about 0.7 g in farmed trout. Both are high-purine fish, so the practical approach is modest portions of either, not large servings of one.
Is steelhead the same as trout for gout?
Steelhead is the same species as rainbow trout, the sea-run form of the fish, and it's often sold as steelhead trout. There's no separate purine analysis for it in the USDA database, so the rainbow trout figure of about 180 mg per 100 g is the best guide. Treat it like trout: a 3- to 4-ounce portion between flares, not during one.
Is smoked trout OK if I have gout?
In small amounts. There's no purine figure for smoked trout in the USDA database, but smoking dries the fish, so each gram is likely more concentrated than fresh trout, and smoked fish is usually salty. Use it as a topping, an ounce or two on a salad or cracker, rather than as the main protein, and skip it during a flare.
How often can I eat trout if I have gout?
There's no official limit. The American College of Rheumatology simply advises people with gout to limit purines. A reasonable starting point between flares is a 3- to 4-ounce portion once or twice a week, on days when trout is your only high-purine food. Keep a simple food and symptom log and adjust based on how your joints respond.