Coconut oil is roughly 90% saturated fat, making it more saturated than butter (about 63%) or even lard (about 40%). That single fact drives most of the health concerns. Despite its reputation as a “natural” or “clean” fat, coconut oil raises LDL cholesterol more than other cooking oils and delivers very few of the benefits often claimed by wellness marketing.
It Raises LDL Cholesterol More Than Other Oils
A large meta-analysis pooling 16 clinical trials found that coconut oil raised LDL cholesterol by about 10.5 mg/dL compared to nontropical vegetable oils like olive, canola, and soybean oil. It also raised HDL (“good”) cholesterol by about 4 mg/dL, which sounds positive but doesn’t offset the LDL increase. Elevated LDL is one of the strongest, most consistent risk factors for heart disease, and the net effect of coconut oil on your lipid profile is unfavorable when compared to virtually any unsaturated cooking oil.
The mechanism is straightforward. About 49% of coconut oil is lauric acid, with another 16% coming from myristic and palmitic acids. These three fatty acids slow down the liver’s ability to clear LDL particles from the bloodstream while simultaneously boosting LDL production. The result is more cholesterol circulating in your blood for longer.
If you swap coconut oil for butter, your numbers actually improve slightly, because butter’s fatty acid profile is even worse for LDL. But if you swap coconut oil for olive oil, avocado oil, or other unsaturated fats, LDL drops meaningfully. That’s the comparison that matters for most people choosing a daily cooking oil.
The “Healthy Fat” Claims Are Overstated
Much of coconut oil’s health halo comes from confusion with MCT oil. Medium-chain triglycerides (the C8 and C10 fatty acids) are metabolized quickly by the liver and have shown some modest benefits for energy and satiety in controlled studies. But here’s the problem: most coconut oil on store shelves contains only about 13 to 14% of those beneficial shorter-chain MCTs. The dominant fat in coconut oil is lauric acid, which behaves more like a long-chain fatty acid in the body, getting packaged into lipoproteins and circulating through the bloodstream rather than being rapidly burned for fuel.
Some studies that reported benefits of coconut oil actually used 100% MCT coconut oil, a specially processed product that’s nothing like the jar in your pantry. When you see claims that coconut oil “boosts metabolism” or “burns fat,” those findings almost always trace back to research on pure MCT oil, not regular coconut oil. The two are fundamentally different products that share a name.
How It Stacks Up Against Dietary Guidelines
The U.S. Dietary Guidelines recommend keeping saturated fat below 10% of your daily calories. On a 2,000-calorie diet, that’s about 22 grams. A single tablespoon of coconut oil contains roughly 12 grams of saturated fat, meaning one tablespoon eats up more than half your daily limit. Use two tablespoons for cooking and you’ve exceeded it before eating anything else.
By comparison, a tablespoon of olive oil has about 2 grams of saturated fat. A tablespoon of canola oil has about 1 gram. The gap is enormous, and it’s why the American Heart Association has consistently advised against using coconut oil as a primary cooking fat. The World Health Organization is also currently developing formal guidance on tropical oils like coconut and palm oil, specifically because of their role in the global burden of heart disease.
It May Trigger a Short-Term Inflammatory Response
A randomized crossover study tested how different fat sources affected endotoxin levels in the blood after a meal. Endotoxins are bacterial fragments that can leak from the gut into the bloodstream, and elevated levels are linked to metabolic stress over time. Participants who ate a meal with coconut oil as the fat source showed increased postprandial endotoxin levels compared to meals made with fish oil, which actually lowered them. The study didn’t find a spike in inflammatory markers from a single meal, but chronically elevated endotoxin exposure from a high-saturated-fat diet is a recognized contributor to metabolic dysfunction.
Better Oils for Everyday Cooking
Replacing coconut oil with unsaturated fats consistently reduces cardiovascular risk in clinical data. Olive oil and avocado oil are rich in monounsaturated fats that lower LDL without dragging down HDL. Canola and soybean oil provide polyunsaturated fats, including omega-3s, that further improve your lipid profile.
If you’re concerned about smoke points, refined coconut oil does perform well at high heat (around 400 to 450°F), but so does refined avocado oil, light olive oil, and peanut oil. You don’t need coconut oil for high-temperature cooking. For sautéing, roasting, and most stovetop tasks, extra virgin olive oil at 350 to 400°F works perfectly and carries decades of evidence supporting heart health.
None of this means a teaspoon of coconut oil in a curry will harm you. The concern is with routine, daily use as your primary cooking fat, which is what many people adopted during the coconut oil trend of the 2010s. Used occasionally for flavor, coconut oil is fine. Used as your go-to oil, it pushes your saturated fat intake well past recommended limits and raises your cholesterol in ways that cheaper, more common oils simply don’t.