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Plant Oils
There are plenty of plant oils that exist on the market extracted from various plants. The oils from the following plants, nuts and seeds are most used: almond, avocado, canola, coconut, corn, cottonseed, flaxseed, grapeseed, olive, palm, peanut, safflower, sesame, soybean, sunflower and walnut oil. Most of these are suitable for cooking, while others are used for other things. Olive oil in particular is widely and very frequently used, but why? It is the taste? The aroma? Smell? Viscosity? All of these attributes combined? And what do terms like “cold-pressed” and “Extra virgin” mean? Before addressing the answers to these questions, let us take a brief look at the origin of the olive tree.
Origin of the Olive
With history that dates back to more than 5,000 years ago, the olive tree and its highly prized fruits, are by no means a new discovery. Because of its ancient history, it is not known when exactly it may have been domesticated. The wild olive has been collected for so long in disputed areas. With the olive’s origins in the eastern Mediterranean area, the fruit of the tree quickly spread around the region and is now enjoyed throughout the world. Thanks to the Mediterranean region’s ideal climate for it, the region produces the highest yield of it in the world. And naturally, with the longtime use and history of it in the area, it is the most iconic ingredient of Mediterranean cuisine.
Extraction Method and Composition
Extra Virgin Olive Oil, also shortened to EVOO, refers to two things: the composition and the method of how the oil was extracted from the olives. True, authentic extra virgin olive oil is extracted by using pressure that does not involve any heat. This is known as “Cold pressing”. This allows the oil to maintain all of its antioxidants, nutrients and flavours that gives extra virgin olive oil the health benefits its valued for. What is confusing is how some bottles may have misnomial labels such as “Pure” and “Light”. Usually, such labels would mean that the product is made solely of a particular ingredient, or that is has reduced calories. This is not the case for olive oil at all. “Pure” refers to oil that is a combination of refined and virgin oils. “Light” refers to oil that has been filtered to remove the sediment. Neither of these two types of oils will have the taste and complete health benefits of cold-pressed extra virgin olive oil. “Extra virgin” means 100 percent. If the oil has been mixed, it does not (and should not) qualify for that title.
Additional Things to Look For
Quality extra virgin olive oil should be grown, pressed and bottled in one country. Not grown in Greece, pressed in Italy and then bottled in Spain for instance. Such a procedure would have a great effect on the oleic acidity, quality and authenticity of the final product. That said, shopping for authentic extra virgin olive oil is not complicated at all. All it requires is for a buyer to read the label for its origins, press date, expiry date and certificate of qualification. The North American Olive Oil Association (NAOOA) is an example of one of the reputable certifiers for North American consumers. Oil connoisseurs will certainly have their favourite brands that they recommend and speak highly of. Additionally, if the supermarket where a consumer is buying oil from has samples, this is an excellent way to try before buying.
Health Benefits of Extra Virgin Olive Oil
The health benefits of extra virgin olive oil are many. The taste, history and love for olives has resulted in plenty of studies to help us better understand its potential. The fat in olive oil is largely monounsaturated fat, a healthy fat that comes with numerous health benefits to be discussed shortly. Extra virgin olive oil is also very high in antioxidants, which provides numerous health benefits to the body. Additionally, it contains small amounts Omega-3 and Omega-6 fatty acids. Here are the list of things that extra virgin olive oil can possibly reduce, improve, prevent or eliminate: Cardiovascular disease, osteoporosis, blood pressure, type 2 diabetes, cholesterol, obesity, Alzheimer’s disease, depression, stroke and the skin and hair. To learn more about how olive oil addresses each of these, read the subheadings below for each.
Cardiovascular disease
As the human body ages, the heart naturally deteriorates over time. This process is further sped up if a person smokes, uses certain drugs, frequently eats the wrong foods, and so forth. Spanish scientists believe that a diet rich in monounsaturated fats from sources such as olive oil, could help improve the arteries in the elderly.
Osteoporosis
Osteoporosis is a disease distinguished by low bone mass and deterioration of bone tissue. Extra virgin olive oil consumption helps improve bone mineralization and calcification. This is because it helps the body absorb calcium better, which is key to maintaining proper bone thickness and density.
Blood Pressure
By decreasing both systolic and diastolic blood pressure, extra virgin olive oil has been shown to improve people with high blood pressure, when they consumed modest amounts daily.
Type 2 Diabetes
Patients with type 2 diabetes are often told to avoid a high fat diet. However, research has since shown that the right types of fats can actually help to improve symptoms. How? Extra virgin olive oil helps to regulate blood sugar and improve insulin sensitivity. Additionally, a study published by the American Diabetes Association has shown that a diet rich in extra virgin olive oil, reduced the risk of contracting type 2 diabetes by nearly 50 percent. Plenty of exercise and fresh air is crucial.
Cholesterol
As little as 30 millilitres of extra virgin olive oil a day has proven to help lower low-density lipoprotein (LDL) cholesterol and triglycerides. In addition to this, the oil has been shown to help improve high-density lipoprotein (HDL) cholesterol, therefore improving the balance between the cholesterol in the body.
Obesity
Because the fat composition of olive oil is largely monounsaturated fat, it leaves the body feeling more satisfied. This is a contrast in comparison to other unhealthy fats from confectioneries for instance. This, in turn with a nutrient-rich diet, helps to curb obesity by reducing the desire to snack and eat unhealthier things in excess.
Alzheimer’s Disease
It is no secret that extra virgin olive oil is rich in antioxidants. Studies have revealed that the oleocanthal, a polyphenol found in this oil, has the potential to reduce the cognitive decline that occurs with aging. This includes degenerative diseases such as Alzheimer’s disease. Olive oil’s polyphenols also help to combat the oxidative stress linked with aging.
Depression
While it does not cure depression, it is a well established fact that diet plays a huge role in effectively preventing and reducing depression. A diet rich in vitamins, minerals and healthy fats, including the monounsaturated fat found in olive oil, helps. This ties in line with researchers’ findings on how diets with a higher intake of certain fats, were associated with lower risks of depression.
Stroke
A study conducted in France revealed that the individuals that cooked with, or consumed olive oil through other means, had a 41 percent lower risk of stroke. This is in comparison to those that did not use olive oil at all. The reason behind this has to do with how the health properties of olive oil works in the cardiovascular system.
Skin
Olive oil contains vitamin E, polyphenols, and phytosterols, all of which are good for the skin. Unlike some commercial moisturizers, olive oil does not clog pores. For this reason, some people prefer it over others, and lightly apply it to areas of their skin. This explains the popularity for creams, cosmetics, and body lotion derived from olives for skin care products.
Hair
Similar to the reasons above, numerous products derived from olives exist for the purpose of cleaning, moisterizing, or otherwise improving hair. Relaxers, root stimulators, hydrators and shampoo are examples.
Warning
As highly acclaimed as olive oil is, it is important to remember that it is not the cure-all for everything. Some of its health benefits only “suggest” or “believe” at best, meaning there is not enough concrete evidence for some of its claims. And while it may be healthier than other oils, it is still a fat. Therefore, it must be consumed or used modestly to avoid problems linked to excessive usage. While on topic of this, it must be mentioned that a lot of these Mediterranean diets that make use of olive oil, also incorporated plenty of fruits, vegetables, lean meat, whole grains, as well as plenty of exercise to enjoy the full health benefits and lifestyles that are spoken highly of.
Modernization has brought in a lot of processed foods and refined sugar. Many modern people eat more of these than they should, consequently effecting their waistlines and lifespans. This is not to say that olive oil is bad all of sudden, but that common sense, knowledge and moderation are key. Do not blindly follow any sort of health hype without first doing proper research. Does the product have more benefits? Or more drawbacks? Such questions are excellent ones to determine worthiness.