Anchovies are one of the best fish you can eat for cholesterol. They’re packed with omega-3 fatty acids, which lower triglycerides, reduce LDL (bad) cholesterol, and nudge HDL (good) cholesterol upward. A 4-ounce serving delivers 2,300 to 2,400 milligrams of the two omega-3s that matter most for heart health, putting anchovies in the top tier of all seafood.
How Anchovies Improve Your Cholesterol
The omega-3 fats in anchovies work on your lipid profile from multiple angles. Clinical trials on oily fish consumption have shown roughly a 4% reduction in triglycerides and a 2.5% drop in LDL cholesterol, along with a slight increase in HDL cholesterol. Those numbers might sound modest, but they compound over time, especially when fish replaces less heart-friendly protein sources like processed meat or high-fat dairy.
Beyond the headline cholesterol numbers, omega-3s also change the physical characteristics of LDL particles. In a study of patients with type 2 diabetes, eight weeks of omega-3 supplementation alongside standard treatment increased LDL particle size by about 2.8% and cut triglycerides by 41%. Larger LDL particles are less likely to burrow into artery walls and form plaques, so even if your total LDL number stays the same, the particles themselves become less harmful.
More Than Just Omega-3s
A 2-ounce (45-gram) serving of canned anchovies provides 56% of your daily vitamin B3 (niacin) and 55% of your daily selenium. Niacin has a long track record in cholesterol management. It helps your body process fats more efficiently and has been shown to raise HDL levels. Selenium acts as an antioxidant, reducing the kind of oxidative stress and inflammation in blood vessels that accelerates heart disease.
These nutrients work alongside omega-3s rather than independently. The combination of anti-inflammatory fats, niacin, and selenium in a single small fish is part of what makes anchovies so effective compared to taking any one of these nutrients in isolation.
Effects on Inflammation and Arteries
High cholesterol doesn’t cause heart disease on its own. Chronic inflammation plays a major role, damaging artery walls and making it easier for cholesterol to accumulate into plaques. Omega-3 fatty acids directly address this. In a randomized crossover trial, six months of high-dose omega-3 supplementation lowered C-reactive protein, a key marker of systemic inflammation, by 23%. The effect persisted for months even after supplementation stopped, suggesting that the longer-acting omega-3 (DHA) builds up in tissues and continues working.
Fish oil also improves how your arteries function. In controlled experiments, diets rich in fish oil significantly improved the ability of blood vessels to relax and dilate, while lowering blood pressure. The mechanism involves reducing thromboxane, a compound that causes blood vessels to constrict and promotes clotting. Flexible, responsive arteries are better at handling the cholesterol that does circulate in your blood, reducing the chance it gets deposited where it shouldn’t be.
How Much to Eat
The American Heart Association recommends at least two servings of fatty fish per week, and anchovies are specifically named as one of the best choices. A serving is about 4 ounces (113 grams). You don’t need to eat anchovies exclusively. Rotating them with salmon, sardines, mackerel, and herring gives you variety while keeping your omega-3 intake consistently high.
Two servings a week is the minimum for cardiovascular benefit. People with elevated triglycerides sometimes benefit from more, though whole food sources are preferable to supplements when possible because they deliver the full package of protein, selenium, and niacin alongside the fats.
Watch the Sodium in Canned Anchovies
There’s one significant caveat. Canned anchovies are heavily salted during processing. A single can of oil-packed anchovies contains about 734 milligrams of sodium, which is roughly a third of the recommended daily limit. High sodium intake raises blood pressure, which works against the cardiovascular benefits you’re trying to get from the omega-3s.
You can reduce the sodium load by rinsing canned anchovies under cold water before eating them, which washes away a substantial portion of the surface salt. Choosing fresh or frozen anchovies when available eliminates the problem entirely. If you’re using anchovy paste in cooking, keep in mind that it’s similarly high in sodium per serving. A little goes a long way in sauces and dressings, and the concentrated flavor means you typically use less, but it’s worth being mindful of how much you add.
Low Mercury, High Safety
One of the biggest advantages anchovies have over other fish is their extremely low mercury content. FDA testing found an average mercury concentration of just 0.016 parts per million in anchovies, lower than salmon (0.022 ppm) and dramatically lower than canned light tuna (0.126 ppm) or swordfish (0.995 ppm). Anchovies are small, short-lived fish near the bottom of the food chain, so they don’t accumulate the heavy metals that concentrate in larger predatory species.
This makes anchovies safe to eat frequently, even for pregnant women and children who need to be more cautious about mercury. You can comfortably eat anchovies several times a week without approaching any mercury threshold, which isn’t true of many other omega-3-rich fish.
Simple Ways to Add Anchovies to Your Diet
If you’re not used to eating anchovies, the strong flavor can be a barrier. The easiest entry point is using them as a background ingredient rather than a starring one. A couple of minced anchovy fillets dissolved into olive oil at the start of cooking add a savory depth to pasta sauces, salad dressings, and stir-fries without any fishy taste. They melt into the oil completely and become undetectable.
For people who enjoy the flavor, anchovies work well on toast with a squeeze of lemon, tossed into Caesar salads, or laid across pizza. White anchovies (boquerones), which are marinated in vinegar rather than salt-cured, have a milder flavor and significantly less sodium. They’re a good option if you want the nutritional benefits without the intensity of the traditional canned variety.