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Olive Leaves: Benefits, Uses, and More
Today we talk about the largely unknown aspects in the world of oil. We often discuss the properties and benefits that a good EVOO can provide us, but we overlook a fundamental part of the olive tree's anatomy: its leaves.
We will delve into all their peculiarities, uses, and benefits.
Characteristics of Olive Leaves
We all picture the image of an olive leaf: narrow, elongated, pointed, and curved. On the underside, they have a whitish color, while the upper side displays a bright and striking green.
The leaves of the olive tree change their characteristics as the tree matures and grows. In its young stage, the leaves are a dark and intense green and are arranged oppositely along the branches. Over time, these leaves evolve into a more elongated adult shape.
Olive leaves also vary depending on the olive variety. For example, the leaves of the Picual variety tend to be broader and greener, while those of the Hojiblanca variety are narrower and have a less intense green.
They are a fundamental part of the olive tree's anatomy and can provide us with a lot of information about its condition. For example:
- Black or gray spots on the leaves: May indicate that the olive tree is suffering from a disease called repilo, caused by a fungus that affects olive groves.
- Curled and yellowing leaves: Indicate a lack of water and a risk of drought.
- Leaves with irregular shapes: May suggest a deficiency in phosphorus.
Chemical Composition
Olive leaves are a rich source of minerals, carbohydrates, fiber, proteins, and lipids. Among the minerals found in olive leaves, calcium is the predominant element, followed by potassium. Olive leaves contain all the essential amino acids (except for methionine) in favorable amounts, with lysine being the most essential amino acid, followed by leucine.
Health Benefits
The main health benefits found in olive oil and olive leaf extract are primarily attributed to antioxidants called polyphenols.
The olive leaf also contains an exceptionally potent polyphenol known as oleuropein. Studies show that, in addition to its antioxidant power, oleuropein has anti-inflammatory, antiviral, and antimicrobial effects. These properties point to health benefits such as:
Improved cardiovascular health: Studies indicate that olive leaf extract helps prevent the accumulation of LDL cholesterol (known as "bad" cholesterol) in the arteries. This promotes better blood flow and lowers blood pressure, thereby reducing the risk of heart diseases.
Lower risk of diabetes: The antioxidants in olive leaves can decrease blood sugar levels and help maintain them at stable levels to promote optimal health. Additionally, studies indicate that olive leaf extract may reduce insulin resistance in the body, one of the main risk factors for developing diabetes.
Stronger immune system: Some studies suggest that oleuropein may stimulate the production of immune cells, which are crucial in the body's response to infections and diseases.
Traditional Uses of Olive Leaves
Olive leaves have been used for centuries for their health benefits. They have been employed to address a wide range of ailments and diseases, such as inflammatory disorders, cough, bacterial infections, and hypertension.
The methods of preparation vary, although the most well-known is in infusion; simply boiling the dried leaves can yield a soothing beverage. Another way to consume them is by chewing, as it was believed to help with toothache, lip irritation, and to maintain oral hygiene.
Today, this may seem like an old-fashioned remedy with little scientific evidence, but, as mentioned earlier, numerous studies confirm the properties of olive leaves.
Tea and Extract from Olive Leaves
Olive leaf extract is available in the form of supplements or tea. Although there are no officially established doses, research suggests that health benefits are observed when consuming between 500 and 1000 milligrams daily.
Since formulations and products may vary, it is important to follow your doctor's recommendations and the manufacturer's instructions to ensure that you are taking a safe and effective amount.
