Coconut oil is an edible fat extracted from the meat of mature coconuts. It’s roughly 82% saturated fat, which makes it solid at room temperature and gives it an unusually long shelf life compared to most plant oils. About 54% of its fat comes from medium-chain triglycerides (MCTs), a type of fat that the body processes differently than the long-chain fats found in most other foods. That unique composition is behind both the health claims and the controversies surrounding it.
What’s Actually in Coconut Oil
The dominant fatty acid in coconut oil is lauric acid, making up about 49% of the total fat. Myristic acid and palmitic acid each contribute around 8%. The rest is a mix of shorter-chain fats like caprylic and capric acid, plus small amounts of unsaturated fats.
Lauric acid sits in an unusual middle ground. It’s technically a medium-chain fatty acid based on its 12-carbon structure, but the body metabolizes it more like a long-chain fat. The shorter MCTs in coconut oil, caprylic and capric acid, are the ones that get rapidly absorbed and converted to energy in the liver. They only make up a small fraction of coconut oil’s total fat, which is why pure MCT oil (a concentrated extract) behaves quite differently in the body than whole coconut oil.
Virgin vs. Refined: Two Different Products
Not all coconut oil is the same. The two main types you’ll find on shelves differ in how they’re made, how they taste, and how they perform in the kitchen.
Virgin (unrefined) coconut oil is pressed from fresh coconut meat without heat or chemical solvents. It retains the coconut’s natural flavor and aroma, along with more of its minor plant compounds. Its smoke point is around 350°F (177°C), which makes it fine for light sautéing but not ideal for high-heat frying.
Refined, bleached, and deodorized (RBD) coconut oil goes through additional processing that strips out the coconut taste and scent. The tradeoff: it loses some of those minor beneficial compounds, but it gains a neutral flavor and a significantly higher smoke point of 400 to 450°F (204 to 232°C). If you’re deep-frying or don’t want a coconut flavor in your food, refined is the practical choice.
How It Affects Cholesterol
The biggest question around coconut oil is what it does to your heart. A randomized trial published in BMJ Open compared four weeks of daily coconut oil, olive oil, and butter in healthy adults. The results were more nuanced than the usual “coconut oil is bad” headlines suggest.
Butter raised LDL (“bad”) cholesterol significantly compared to both coconut oil and olive oil. Coconut oil and olive oil, meanwhile, produced no meaningful difference in LDL levels. That surprised many researchers, given coconut oil’s high saturated fat content. Coconut oil also raised HDL (“good”) cholesterol more than either butter or olive oil. And on the ratio of total cholesterol to HDL, a key marker of cardiovascular risk, coconut oil looked similar to olive oil and significantly better than butter.
Still, the American Heart Association recommends avoiding coconut oil, grouping it with other saturated fats that should be limited to reduce cardiovascular risk. Their position is that saturated fats in general should be replaced with unsaturated fats from plant sources. The gap between that blanket recommendation and the trial data showing coconut oil behaving more like olive oil than butter is the core of the ongoing debate.
Skin and Hair Uses
Coconut oil has a long history as a topical moisturizer, and there’s real science behind it. Applied to skin, virgin coconut oil boosts the production of proteins that are essential for maintaining your skin’s barrier. One of these proteins helps build the tough outer layer of skin cells. Another regulates how water moves through the skin, keeping cells hydrated. A third helps maintain the skin’s natural pH balance.
Clinical trials in people with atopic dermatitis (eczema) found that virgin coconut oil reduced skin inflammation and decreased transepidermal water loss, which is the rate at which moisture escapes through the skin. In practical terms, that means less dryness and irritation. Coconut oil also has mild antimicrobial properties, which may help keep the skin’s surface bacteria in check. For people with dry or eczema-prone skin, it can work as a simple, inexpensive emollient.
The Metabolism Claims Don’t Hold Up
One of the most popular claims about coconut oil is that its MCT content boosts your metabolism and helps burn fat. This idea comes from studies on pure MCT oil, where concentrated doses of caprylic and capric acid (the shortest-chain MCTs) did increase energy expenditure in some trials. The problem is that coconut oil contains very little of those specific fats.
A randomized trial tested whether a coconut oil-enriched meal would increase calorie burning compared to corn oil. It didn’t. There was no difference in resting energy expenditure or the thermic effect of food between the two fats. The researchers calculated that to get the 15 grams of caprylic and capric acid used in the positive MCT studies, you’d need over 300 grams of coconut oil fat, roughly 2,700 calories worth. At realistic serving sizes, coconut oil simply doesn’t deliver enough of those short-chain MCTs to move the needle on metabolism.
How to Use It in the Kitchen
Coconut oil is solid below about 76°F (24°C) and melts into a clear liquid above that. This makes it a useful substitute for butter in baking, particularly in vegan recipes, since it provides a similar solid-to-liquid transition. Virgin coconut oil adds a mild coconut flavor that works well in curries, granola, and tropical-inspired dishes. Refined coconut oil is better for recipes where you want the fat’s cooking properties without any coconut taste.
For high-heat cooking like stir-frying or searing, refined coconut oil handles the temperature better. Virgin coconut oil will start to smoke and break down around 350°F, which limits it to medium-heat applications. Both types store well at room temperature for months without going rancid, thanks to the high saturated fat content that resists oxidation.
A tablespoon of coconut oil contains about 120 calories and 14 grams of fat, nearly all of it saturated. That’s comparable to a tablespoon of butter. Using it as a complete replacement for all your cooking fats would push saturated fat intake well above recommended levels. Most people get the best results by treating it as one option in a rotation of cooking fats that includes olive oil and other unsaturated options.