Tropical oils are plant-based fats extracted from crops grown in equatorial regions, primarily coconut oil, palm oil, and palm kernel oil. What sets them apart from other vegetable oils is their unusually high saturated fat content, which makes them semi-solid or solid at room temperature. This property makes them behave more like butter than like olive or canola oil, and it’s the reason they show up in so many processed foods.
The Three Main Tropical Oils
Coconut oil comes from the white flesh of coconuts. Its fat is roughly 82% saturated, the highest of any commonly used cooking oil. The dominant fatty acid is lauric acid, a medium-chain fat that the body processes somewhat differently than the longer-chain saturated fats found in meat and dairy.
Palm oil is pressed from the reddish fruit pulp of the oil palm tree. It contains about 50% saturated fat, with palmitic acid as its primary fatty acid. Unrefined (red) palm oil is notably rich in nutrients: it contains 200 to 350 mg/kg of beta-carotene, a precursor to vitamin A, and 200 to 400 mg/kg of tocotrienols, a form of vitamin E with antioxidant properties. Most palm oil sold commercially, however, is refined and stripped of these compounds.
Palm kernel oil is extracted not from the fruit but from the hard seed inside it. The seeds are roasted, ground, and processed to release the oil. Despite coming from the same tree, palm kernel oil is a very different product: it’s about 80% saturated fat, much closer to coconut oil in composition than to palm fruit oil. It’s used almost exclusively in food manufacturing rather than home cooking.
Why They’re So Common in Packaged Foods
Tropical oils solve a practical problem for food manufacturers. Their high saturated fat content gives them melting points and textures that liquid vegetable oils can’t match. Coconut and palm kernel oil melt between 10 and 30°C, making them ideal for products that need to feel solid at room temperature but melt smoothly in your mouth. Palm oil fractions are stable enough to use in shortenings and margarines. Solid fats like these form the base for chocolate substitutes, filling creams, toffees, caramels, ice cream, and nondairy creamers.
Shelf stability is the other major advantage. Palm oil fractions are more resistant to oxidation than most vegetable oils, meaning products made with them stay fresh longer on store shelves. When the food industry moved away from trans fats (partially hydrogenated oils) in the 2000s, palm oil became the primary replacement because it could provide similar texture and stability without the hydrogenation process.
How They Affect Cholesterol
The saturated fat in tropical oils raises blood cholesterol, but the picture is more nuanced than a simple “good or bad” label. Eight studies found that coconut oil significantly increased total cholesterol compared to oils like olive, corn, and soybean oil. Seven of those studies also showed increases in LDL cholesterol, the type linked to arterial plaque buildup.
At the same time, coconut oil consistently raises HDL cholesterol, the protective type. Six studies found significant HDL increases, and one randomized trial in healthy adults showed that 30 mL of virgin coconut oil daily raised HDL by about 5.7 mg/dL without significantly changing LDL or triglycerides. So coconut oil tends to push both types of cholesterol upward, which complicates the net effect on heart disease risk.
Palm oil’s relationship with heart disease has been studied in large pooled analyses. A meta-analysis of 20 observational studies covering over 10,000 cardiovascular events found a relative risk of 1.03 for coronary disease, meaning palm oil consumption was associated with roughly the same risk as not consuming it. That’s close to neutral, though it doesn’t rule out small effects in either direction.
Lauric Acid vs. Palmitic Acid
Not all saturated fats behave identically in the body, and this matters when comparing tropical oils. Coconut oil is dominated by lauric acid, a 12-carbon chain classified as a medium-chain fatty acid. Palm oil is dominated by palmitic acid, a 16-carbon long-chain fat. Animal research comparing the two directly found that palmitic acid triggered significantly more inflammation in fat tissue, greater insulin resistance, and more liver damage than lauric acid did under the same high-fat feeding conditions. Lauric acid still caused some metabolic disruption, but consistently less than palmitic acid across every marker tested.
This doesn’t make coconut oil harmless in large amounts, but it helps explain why different tropical oils can have different metabolic effects despite both being high in saturated fat.
Cooking With Tropical Oils
If you cook with tropical oils at home, their smoke points matter. Unrefined palm oil has a smoke point of 235°C (455°F), high enough for deep frying and high-heat sautéing. Unrefined coconut oil smokes at a much lower 177°C (350°F), making it better suited to baking, medium-heat cooking, and recipes where you want a mild coconut flavor. Refined versions of both oils tolerate higher heat than their unrefined counterparts.
In tropical regions of Africa and Southeast Asia, palm and coconut oils have been dietary staples for centuries. They’re deeply embedded in local cuisines, and populations that have used them traditionally tend to consume them alongside fiber-rich, whole-food diets rather than in the ultra-processed context common in Western countries.
Where They Fit in a Healthy Diet
The Dietary Guidelines for Americans recommend keeping saturated fat below 10% of total daily calories for anyone age 2 and older. On a 2,000-calorie diet, that’s about 22 grams. A single tablespoon of coconut oil contains roughly 12 grams of saturated fat, more than half that limit. Palm oil, at 50% saturated fat, uses up the budget more slowly but still adds up fast.
The practical takeaway is that tropical oils aren’t toxic, but they’re calorie-dense and saturated-fat-heavy. Using small amounts for flavor or texture is different from making them your primary cooking fat. If you’re choosing between tropical oils, palm fruit oil offers a better balance of saturated to unsaturated fat than either coconut or palm kernel oil, and unrefined red palm oil delivers meaningful amounts of vitamin A precursors and vitamin E that the others lack. For everyday cooking where you don’t need a solid fat, oils higher in unsaturated fats like olive, avocado, or canola remain the simpler choice for heart health.