14 Unexpected Side Effects Of Olive Oil: Risks You Need To Know
A beloved pantry staple can bring unexpected health and skincare warnings when overused.
14 Unexpected Side Effects Of Olive Oil: What You Should Know
Olive oil is widely celebrated as a healthful ingredient in both the kitchen and cosmetic routines. Praised for its rich flavor, heart-healthy fats, and skin-nourishing properties, it features prominently in Mediterranean diets and natural beauty formulas. However, this golden oil also has a less frequently discussed side: potential side effects that may affect your health and wellbeing. Whether consumed in excess or applied improperly, olive oil is not without risks. This article explores the 14 unexpected side effects of olive oil, helping you make more informed choices about its use in your diet and skincare regime.
What Is Olive Oil?
Olive oil is an edible oil pressed from olives, the fruits of the Olea europaea tree, chiefly cultivated in Mediterranean regions. It’s used for sautéing, drizzling on salads, as a base for dressings, and in many health and beauty applications. Olive oil comes in a variety of types, each with different flavors, quality markers, and uses:
- Extra Virgin Olive Oil: The highest quality oil, made from cold-pressed olives with a rich flavor and maximum antioxidants.
- Virgin Olive Oil: Also cold-pressed but with a higher acidity and milder taste than extra virgin.
- Pure Olive Oil: A blend of refined and virgin oils, lighter in flavor and less nutritious.
- Light Olive Oil: Highly refined, with the mildest taste and aroma, often used for high-temperature cooking.
Despite its benefits, excessive or inappropriate use can result in various health complications and unexpected side effects.
Key Takeaways
- Excessive olive oil use may trigger skin allergies and acne in sensitive individuals.
- It can interact with certain medications, notably blood thinners, potentially reducing their efficacy.
- Olive oil is high in calories and can contribute to weight gain and altered blood glucose levels.
- Potential gastrointestinal issues like diarrhea and digestive discomfort may occur.
Top 14 Side Effects Of Olive Oil
Below are the principal side effects of olive oil that warrant attention before routine use.
1. Causes Acne
Olive oil may lead to breakouts, especially in those with oily or acne-prone skin. The oil is heavy and doesn’t absorb quickly, leaving a thick film over the skin that clogs pores and traps dirt and sebum. This adhesive surface promotes acne, pimples, and blackheads. Limit olive oil application on the face to a thin layer and no more than twice a week for hydration benefits without the risk of clogged pores. If you have oily skin, it’s best to avoid olive oil for topical use altogether.
2. Can Cause Allergies
Though rare, some people may develop allergic reactions to olive oil, including contact dermatitis, eczema, or respiratory problems from olive tree pollen exposure. Symptoms can include itching, redness, hives, sneezing, and difficulty breathing. Patch test olive oil before skin application, and discontinue use if signs of allergy develop.
3. Causes Skin Rashes
Olive oil disrupts the natural moisture barrier, particularly in individuals with sensitive or dry skin, causing irritation, redness, or rashes. Repeated application may weaken the skin’s protective barrier, enhancing susceptibility to inflammation and environmental damage. Sensitivity testing is advised before regular application on larger skin areas.
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4. Not Safe On A Baby’s Skin
Infant skin is thinner and more delicate than adult skin, making it especially vulnerable to irritation from olive oil. Using olive oil on a baby’s skin may exacerbate eczema or dryness and impede the skin’s ability to retain moisture. Pediatric research warns against using olive oil on infants, especially those with underlying skin issues.
5. Is Not Suitable For Dry Skin
While olive oil is commonly touted as a moisturizer, excessive use may worsen dryness by breaking down the skin’s natural protective barrier, leading to increased water loss. Over time, this can result in flaky, irritated skin and exacerbate existing dryness. Alternate with lighter, non-comedogenic moisturizers for dry-skin care.
6. Can Cause Blackheads
The heavy, occlusive nature of olive oil may clog pores, particularly in individuals prone to comedonal acne. This leads to the formation of blackheads, especially on the nose, chin, and forehead where sebaceous glands are abundant. Regular cleansing and cautious use are advisable to prevent pore blockages.
7. Saturated Fat-Related Diseases
Despite being rich in unsaturated fats, olive oil also contains some saturated fats. Regular overconsumption—especially unprocessed olive oil—can increase risks related to cardiovascular health, such as atherosclerosis, obesity, and higher cholesterol. Excessive intake may also contribute to increased risks of heart attack and certain cancers, including breast and colon cancer.
8. Trans-Fat Related Diseases
Improperly stored or over-processed olive oil can develop trans-fats, which are associated with an increased risk of metabolic syndrome, heart disease, and inflammatory conditions. To minimize trans-fat exposure, always choose high-quality, fresh olive oil and avoid using oil that has been repeatedly heated or stored for long periods.
9. Lowers Blood Sugar
Olive oil may lower blood sugar levels, which can be beneficial for some, but problematic for people with hypoglycemia or those taking anti-diabetic medication. Combined use can aggravate symptoms like sweating, tremors, weakness, and dizziness, potentially leading to dangerous drops in blood glucose. Monitor blood sugar regularly and consult your healthcare provider if you use olive oil habitually alongside diabetes medication.
10. Lowers Blood Pressure
Olive oil’s vasodilatory properties can lower blood pressure. While this is helpful for some hypertensive individuals, excessive consumption (especially in combination with blood pressure medications) can cause hypotension—dizziness, fainting, and, in severe cases, stroke or kidney damage. Consult your doctor if you are on antihypertensive drugs before increasing olive oil intake.
11. Causes Inflammation
Some individuals may experience heightened inflammation from olive oil, particularly if they have sensitivities or allergies. This can result in joint or muscle pain, especially if olive oil is overused or consumed by those with inflammatory conditions. Rely on moderation and monitor your body’s response to routine olive oil consumption or application.
12. Gallbladder Stones/Blockage
Excess dietary olive oil can over-stimulate bile production, potentially leading to gallbladder stones or blockages. In those with preexisting gallbladder problems, this may result in acute pain and digestive distress. If you’re prone to gallstones or have a history of gallbladder disease, refrain from high olive oil intake and consult your healthcare provider for personalized advice.
13. Can Cause Diarrhea
Olive oil’s natural laxative properties can lead to gastrointestinal upsets, including diarrhea, stomach pain, or bloating, especially when consumed in large amounts. Individuals with irritable bowel syndrome or sensitive digestion should monitor their intake carefully and reduce consumption if persistent discomfort occurs.
14. High On Calories
Olive oil is calorie-dense, with approximately 120 calories per tablespoon. Overconsumption—particularly when added liberally to salads, pasta, or bread—can quickly contribute to excess calorie intake and subsequent weight gain, counteracting efforts to achieve or maintain a healthy weight. Always use moderate amounts and calculate the cumulative caloric impact in your daily diet.
Drug Interactions and Precautions
- Blood Thinners: Olive oil may influence the effectiveness of anticoagulant medications (e.g., warfarin), raising bleeding risk.
- Diabetes Medications: May amplify the effects of anti-diabetic drugs, risking hypoglycemia.
- Anti-Hypertensives: Can further lower blood pressure if combined with antihypertensive drugs.
Consult your physician prior to making significant changes in your olive oil consumption, especially if you are on prescribed medication for chronic conditions.
When to See a Doctor
If you experience severe or persistent negative symptoms after consuming or applying olive oil—such as stomach pain, unexplained rashes, nausea, vomiting, trouble breathing, or significant changes in heart rate or blood pressure—seek professional medical advice promptly. Early intervention helps prevent potentially severe complications related to allergies or drug interactions.
Frequently Asked Questions (FAQs)
Q: Should I stop using olive oil if I develop acne?
If you notice increased breakouts after using olive oil on your skin, discontinue topical use and switch to lighter, non-comedogenic moisturizers.
Q: Is olive oil safe for everyone to eat?
While olive oil is generally safe for most people in moderate amounts, individuals with specific allergies, gallbladder issues, or those on certain medications should consult their doctors first.
Q: How much olive oil can I safely consume?
Consuming up to 2-3 tablespoons (28–40 grams) daily is typically considered safe for most adults, provided overall calorie needs are not exceeded.
Q: Can olive oil worsen existing skin conditions?
Yes. For those with eczema, dermatitis, or very dry/oily skin, olive oil may aggravate symptoms or disrupt skin barrier function.
Q: Are there healthier alternatives for babies and infants?
Yes, opt for fragrance- and irritant-free baby oils or dermatologist-approved creams instead of olive oil for infant skincare.
Quick Table: Common Olive Oil Side Effects and Who’s At Risk
| Side Effect | Most Likely To Occur In | Recommended Action |
|---|---|---|
| Acne & Blackheads | Oily/Combination Skin Types | Use sparingly; avoid topical use if prone to breakouts |
| Allergic Reactions | Individuals with olive/pollen allergies | Patch test before use; discontinue on reaction |
| Gallstones/Blockage | Those with gallbladder issues | Limit intake; consult physician |
| Diarrhea | Digestive sensitivity/IBS | Limit amount consumed; monitor symptoms |
| Drug Interactions | Individuals on blood thinners, anti-diabetics | Monitor with doctor before use |
| Skin Rashes/Inflammation | Sensitive skin or infants | Use alternate, gentler moisturizers |
| Weight Gain | High-calorie intakes | Moderate overall fat consumption |
Conclusion
Olive oil, when enjoyed in moderation, brings undeniable culinary and health benefits. However, overuse or improper application can trigger a range of unexpected side effects, including skin irritation, allergies, digestive complaints, and interactions with medications. Always approach its use thoughtfully, watch for adverse reactions, and consult a healthcare professional for individual guidance if you have underlying health concerns or are taking medications. Balance and moderation are key to reaping the benefits of olive oil without risking your well-being.
References
- https://www.stylecraze.com/articles/unexpected-side-effects-of-olive-oil/
- https://www.lybrate.com/topic/benefits-of-olive-oil-and-its-side-effects
- https://www.vinmec.com/eng/blog/olive-oil-uses-side-effects-interactions-dosage-and-warnings-en
- https://www.webmd.com/vitamins/ai/ingredientmono-1689/olive-oil
- https://timesofindia.indiatimes.com/life-style/health-fitness/diet/6-side-effects-of-consuming-olive-oil-every-day/articleshow/117601674.cms
- https://www.mdlinx.com/article/too-much-of-a-good-thing-olive-oil-overconsumption-may-be-messing-with-your-gut/6gKYRmTko8xfGfcEZzmsao
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6770785/
- https://www.sciencealert.com/olive-oil-could-have-an-unexpected-effect-on-your-health-study-finds
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