Why is olive oil so healthy? The science behind it.

You've probably heard it a thousand times: "Olive oil is healthy." But Why Really? What's the truth when nutritionists rave about the "Mediterranean diet" and celebrate olive oil as a superfood?

Let's take a look behind the scenes together – scientifically sound, but without complicated technical jargon.

The secret lies in the chemistry.

Olive oil is not simply fat. It is a complex mixture of valuable ingredients that benefit your body in many ways:

1. Oleic acid – The heart protector

Up to 80% of olive oil consists of Oleic acid , a monounsaturated fatty acid. Studies show that it:

• It lowers the "bad" LDL cholesterol level.
• It increases the "good" HDL cholesterol level.
• Reduces inflammation in the body

The champions among olive varieties:

• Koroneiki (Greece): 75-80% oleic acid – the “queen of olive oils” from the steep slopes of the Peloponnese and Crete
• Picual (Spain): 75-78% oleic acid – robust and intense
• Arbequina (Spain/California): 70-75% oleic acid – mild and fruity
• Frantoio (Italy): 72-76% oleic acid – balanced and aromatic

2. Polyphenols – The invisible bodyguards

Polyphenols are secondary plant compounds that act as Antioxidants They:

• Neutralize free radicals (which can damage your cells)
• Protect against chronic diseases
• They have an anti-inflammatory effect

That slightly peppery, sometimes even scratchy-sharp feeling in your throat when you taste high-quality olive oil? That's the polyphenols at work! The more intense the sensation, the higher the concentration.

3. Vitamin E – The cell protector

Olive oil is rich in vitamin E, a fat-soluble antioxidant that:

• Protects your skin from premature aging
• Strengthens the immune system
• The cell membranes are stabilized

Not all olive oils are equally healthy.

Here comes the crucial point that many overlook: Quality makes the difference.

A refined supermarket olive oil, pressed at high temperatures and chemically treated, contains hardly any polyphenols or vitamins. The health benefits? Largely lost.

Things you should pay attention to:

Cold pressing below 27°C
Only at low temperatures are the valuable nutrients preserved. For our Kalithea olive oil, the Koroneiki olives are cold-pressed immediately after hand-harvesting – within just a few hours. No heat, no chemicals, just pure nature.

Hand-picked olives
Damaged olives oxidize immediately. That's why traditional olive growers rely on manual labor – using rakes or electric combs, but always gently. The optimal harvest time between September and March is determined by experienced eyes who know exactly when the olives have reached their peak.

The most important quality features in detail

If you really want to know if your olive oil lives up to its promises, take a look at these lab results:

Acidity (<0.8%)

The acidity level indicates the proportion of free fatty acids and is Acidity is the most important indicator of freshness and quality . The lower the acidity, the better. Premium olive oil has an acidity level of <0.8%, and top-quality oils often even below 0.3%. A high acidity level indicates damaged olives, prolonged storage before pressing, or improper processing.

Peroxide value (<25 mEqO₂/kg)

The peroxide value measures the primary oxidation state of the oil. It indicates how much the oil has already been affected by oxygen, light, or heat. The lower the value, the fresher the oil. Values ​​above 20 indicate the beginning of aging.

Wax content (<150 mg/kg)

The wax content provides information about the Purity of the oil . Natural waxes are found in the olive skin. A low value is particularly typical for oils from the first cold pressing and indicates that no unripe or damaged olives were processed.

UV absorption K232 (<2.5)

The K232 value measures the absorption at a wavelength of 232 nm and is an indicator of primary oxidation products in the oil. It indicates whether the oil has already experienced oxidative stress – for example, due to the olives being stored for too long before pressing.

UV absorption K270 (<0.22)

The K270 value measures the absorption at a wavelength of 270 nm and indicates secondary oxidation processes as well as possible refining. A low value confirms that the oil was truly cold-pressed and not subsequently treated.

UV absorption ΔK (<0.01)

The Delta-K value is a precise indicator of possible adulterations or blends with refined oils. It is calculated from the difference in K-values ​​and is very low for pure, extra virgin olive oil.

Important to know: These values ​​are measured in accredited laboratories and represent objective quality criteria. Reputable manufacturers make these analyses transparently available.

The Mediterranean diet: More than just a trend

The famous Mediterranean diet is based on olive oil as its main source of fat. Numerous long-term studies confirm:

• 30% lower risk for cardiovascular diseases
• Protection against type 2 diabetes
• Positive effects on brain health and Alzheimer's prevention
• anti-inflammatory effect in chronic diseases

But beware: This isn't about drinking liters of olive oil. It's about the regular, conscious consumption as part of a balanced diet.

How much olive oil should you use daily?

Nutrition experts recommend 2-4 tablespoons daily . That sounds like a lot? It really isn't:

• 1 tablespoon over the salad
• 1 tbsp for frying vegetables
• 1 tbsp to refine soups or pasta
• 1 tablespoon in the morning on its own (yes, really – try it!)

The taste of quality

High-quality olive oil tastes Fruity, sometimes grassy, ​​slightly bitter and peppery . These notes are not a flaw – they are proof of a high polyphenol content.

If your olive oil tastes neutral or even rancid, it's either old or of inferior quality. And then what? You also lose out on the health benefits.

Conclusion: Olive oil is only as healthy as its quality.

Science is clear: Olive oil is a true superfood – But only if it's high-quality and properly dosed . Pay attention to:

• ✓ Cold pressing below 27°C
• ✓ Hand-picked olives
• ✓ Low acidity (<0.8%)
• ✓ Low peroxide value and UV levels
• ✓ Freshness (pay attention to the harvest year!)
• ✓ Dark glass bottle (light protection)

The Koroneiki olive from Greece naturally combines all these quality characteristics: high oleic acid and polyphenol content, mild aroma, and long shelf life. No wonder it has been cultivated for centuries on the steep slopes of the Peloponnese.

Your health begins with conscious choices – including when it comes to olive oil.

Have you ever tasted the difference between supermarket olive oil and hand-picked, cold-pressed oil? The difference is like night and day – and your body notices it too.