Eel contains roughly 126 mg of cholesterol per 3.5-ounce (100g) serving, which is moderate compared to other protein sources. That’s about 40% of the 300 mg daily limit that older guidelines once recommended, though current guidance from the American Heart Association no longer treats dietary cholesterol as a primary target for heart disease risk reduction. So while eel does contain more cholesterol than most fish, it’s not a food you need to avoid for that reason alone.
How Eel Compares to Other Seafood
Most white fish like cod, tilapia, and haddock contain 50 to 70 mg of cholesterol per 3.5-ounce serving. Salmon and tuna fall in the 55 to 65 mg range. Eel, at around 126 mg, has roughly double the cholesterol of these common options. That puts it closer to shrimp, which contains about 190 mg per serving and has long been singled out as a high-cholesterol seafood.
For context, a single large egg yolk contains about 186 mg. A 3.5-ounce serving of beef liver has over 300 mg. Eel sits in the middle of the spectrum: higher than most fish, lower than organ meats and eggs.
What Dietary Cholesterol Actually Does
The relationship between the cholesterol you eat and the cholesterol in your blood is less direct than people once believed. A 2026 scientific statement from the American Heart Association notes that dietary cholesterol is no longer a primary target for cardiovascular disease risk reduction for most people. The bigger concern is the overall pattern of your diet, particularly saturated fat intake and processed meat consumption, which have a stronger effect on blood cholesterol levels than the cholesterol content of individual foods.
That said, some people are “hyper-responders” whose blood cholesterol rises more sharply in response to dietary cholesterol. If your doctor has flagged high LDL cholesterol, it’s worth paying attention to cholesterol-rich foods rather than dismissing the number entirely. For most people, though, eating eel a few times a week won’t meaningfully change your lipid profile.
Nutritional Benefits of Eel
Eel’s cholesterol content comes packaged with some genuinely impressive nutrition. A serving of raw eel provides about 80% of the recommended daily intake for vitamin A and 75% for vitamin B12. Vitamin A supports immune function and vision, while B12 is essential for nerve health and red blood cell production. Many people, especially older adults and those eating plant-forward diets, struggle to get enough B12.
Eel is also rich in omega-3 fatty acids, the type of fat that actually helps improve your cholesterol ratio by raising HDL (the protective kind). A 3.5-ounce serving delivers around 18 to 20 grams of protein and provides a good dose of phosphorus and selenium. In terms of overall nutrient density, eel outperforms many leaner fish that technically have less cholesterol.
How Preparation Changes the Picture
The way eel is prepared matters more than its raw nutritional profile for many people. Grilled, baked, or steamed eel retains its natural fat and nutrient content without adding much else. This is a solid choice if you’re watching your overall calorie or sugar intake.
Kabayaki, the sweet glazed preparation common in Japanese cuisine and sushi restaurants, is a different story. The traditional unagi sauce is surprisingly high in sugar: a single ounce contains about 84 calories, with nearly 17 grams of sugar (much of it from high fructose corn syrup). A typical serving of kabayaki eel might use one to two ounces of this sauce, adding 85 to 170 calories on top of the eel itself. If you eat unagi sushi or donburi regularly, the sauce contributes more to metabolic risk than the cholesterol in the fish does.
Deep-fried eel preparations add saturated fat, which has a stronger effect on blood cholesterol than the dietary cholesterol in the eel itself. If heart health is your concern, the cooking method deserves more attention than the raw cholesterol number.
Mercury Worth Knowing About
One consideration that doesn’t get enough attention with eel is mercury. American eel has been found to contain an average of 0.72 ppm total mercury, with about 0.40 ppm as methylmercury (the form your body absorbs most readily). For comparison, the FDA considers 1.0 ppm the action level for mercury in fish, and most commonly eaten fish like salmon and tilapia test well below 0.3 ppm. Eel falls into the moderate-to-high category, similar to tuna and swordfish.
This doesn’t mean you should avoid eel, but it’s a reason to think of it as an occasional food rather than a daily staple. One to two servings per week is reasonable for most adults. Pregnant women and young children, who are most sensitive to mercury’s effects on neurological development, should be more cautious with high-mercury fish in general.
The Bottom Line on Eel and Cholesterol
Eel has more cholesterol than most seafood but less than eggs, organ meats, and many cuts of red meat. Current heart health guidelines focus less on dietary cholesterol and more on overall eating patterns, saturated fat, and processed foods. Eel’s high vitamin A, B12, and omega-3 content make it nutritionally valuable enough that its cholesterol content alone isn’t a reason to skip it. What you put on the eel, and how often you eat it given its mercury levels, are more practical concerns than the cholesterol number on the label.