The Disadvantages of Olive Oil: What You Need to Know Before Consuming
Extra virgin olive oil ranks among the foods most recommended by nutritionists. Yet calling it a « superfood without limits » would be misleading. Caloric, heat-sensitive, sometimes mislabeled or poorly stored, it deserves a nuanced look before making it the base of every meal.
Quick answer: Its main downsides are high energy density (~120 kcal per tablespoon), a limited smoke point for certain cooking methods, real cost for quality oils, commercial fraud risks, and rapid degradation if air, light, or heat are not controlled.
Key takeaways
- Portions: one tablespoon often suffices for seasoning — beyond that, calories add up fast.
- Heat: excellent for gentle cooking; avoid prolonged frying above 190 °C.
- Label: « pure » or « light » does not mean extra virgin — see oils to avoid.
- Storage: opaque container, tight lid — stainless steel containers limit oxidation.
The caloric paradox of « good fats »
Nine kilocalories per gram: the rule applies to all fats, including the most recommended. Fifteen milliliters of olive oil — one tablespoon — delivers as much energy as a slice of bread, in a volume barely noticeable on the plate.
The trap is common: you improve your lipid profile by replacing butter with olive oil, but double the amount poured « because it’s healthy ». Result: stable or even higher caloric intake, with no extra benefit on the scale.
Impact on weight and overall balance
Monounsaturated fatty acids improve LDL cholesterol, but they do not cancel the energy equation. On a hypocaloric diet, two extra tablespoons per day represent nearly 240 kcal — the equivalent of a full snack. The key: measure, dose, reserve your best oil for raw uses.
| Portion | Volume | Approx. energy | Food equivalent |
|---|---|---|---|
| Teaspoon | 5 ml | ~40 kcal | 1 mandarin |
| Tablespoon | 15 ml | ~120 kcal | 1 plain yogurt |
| Generous drizzle | 30 ml | ~240 kcal | 1 medium banana |
| Half glass | 60 ml | ~480 kcal | 1 light sandwich |
- Use a graduated pour spout or measuring spoon.
- Save Moroccan beldi for salads and toast — where every drop counts.
- Pair it with a fiber-rich plate (vegetables, legumes) for satiety.
What heat does to olive oil
Extra virgin smoke point generally sits between 190 and 210 °C. Enough for a vegetable sauté or moderate roasting, insufficient for repeated industrial frying. Beyond that, polyphenols — oleocanthal, hydroxytyrosol — degrade, vitamin E drops, and oxidation compounds may form.
Reusing the same oil several times in frying concentrates these alterations. Apparent savings come at the cost of nutritional loss and unpleasant aromas.
Which cooking methods suit olive oil?
Gentle simmering, quick sauté, moderate roasting, and cold finishing: perfectly suited uses. For prolonged deep frying, choose a dedicated high-oleic oil. Beldi zit, cold-pressed, reveals its full profile in seasoning — never in overheating.
Price, marketing, and labeling traps
Producing true extra virgin costs dearly: careful harvest, fast pressing, controlled storage. A liter below €5 raises questions. Mentions like « pure », « light », or « extra light » suggest quality; in reality, they often designate refined, filtered, deodorized oils, nearly devoid of polyphenols.
Marketing visuals — golden bottle, « premium » claim — never replace the legal category printed on the label. Fraud and opaque blends remain documented on the European market.
Digestive tolerance, allergies, and rancidity
In some people, a sudden lipid intake causes heartburn, nausea, or faster transit. Introduce oil gradually if you increase fat consumption.
Olive allergy exists but remains rare. Rancidity, however, is frequent: bottle exposed to sun, poorly closed cap, tin opened for months. Oil loses fruitiness, develops wax or paint notes, and its antioxidant benefits collapse.
| Degradation factor | Consequence | Solution |
|---|---|---|
| Light | Photo-oxidation, lost aromas | Opaque container (stainless steel, dark glass) |
| Heat | Accelerated rancidity | Pantry 14–18 °C, away from oven |
| Oxygen | Air-lipid contact | Airtight lid, right-size format |
| Age | Polyphenol drop | Consume within 6–12 months after opening |
Drug interactions and contraindications
Olive oil in moderate amounts generally poses no problem. However, « fasting » cures of several tablespoons in the morning, popular on social media, may irritate the gallbladder in sensitive individuals. Patients on anticoagulants or lipid-lowering treatment should consult their doctor before any significant dietary change.
With high cholesterol, olive oil remains recommended — but as a replacement for other fats, not in addition. Its preventive effects are detailed in our article on olive oil and disease prevention.
Frequently asked questions
- Does olive oil make you gain weight? Yes, if total caloric intake exceeds your expenditure. Dosage matters as much as quality.
- Can you be allergic? Very rarely. Consult a doctor for skin, respiratory, or digestive reactions.
- Do downsides erase benefits? No. Cardioprotective effects remain solid — provided you choose traceable extra virgin.
- How to store properly? Cool, dark, airtight. A stainless steel container limits light and air at each use.
- Can you mix several oils in the same container? No — each oil has its profile and shelf life. One container per product, clearly labeled.
Knowing olive oil’s limits means using it better: dose portions, choose traceable oil, protect it from oxidation, and reserve it for compatible cooking. Balance between benefits and constraints makes all the difference daily.
Discover our traditional Moroccan oils
Browse our range of traditional oils: cold-pressed beldi olive, culinary argan, and formats designed for lasting storage.