By Alexandra Rowles
Oregano is a fragrant herb that's best known as an ingredient in Italian food.
However, it can also be concentrated into an essential oil that's loaded with antioxidants and powerful compounds that have proven health benefits.
Oregano oil is the extract and, although it's not as strong as the essential oil, it appears to be useful both when consumed or applied to the skin. Essential oils, on the other hand, are not meant to be consumed.
Interestingly, oregano oil is an effective natural antibiotic and antifungal agent, and it may help you lose weight and lower your cholesterol levels.
What Is Oregano Oil?
Botanically known as Origanum vulgare, oregano is a flowering plant from the same family as mint. It's often used as an herb to flavor food.
Although it's native to Europe, it now grows all over the world.
Oregano has been popular ever since the ancient Greek and Roman civilizations used it for medicinal purposes. In fact, the name oregano comes from the Greek words "oros," meaning mountain, and "ganos," meaning joy or delight.
The herb has also been used for centuries as a culinary spice.
Oregano essential oil is made by air-drying the leaves and shoots of the plant. Once they're dried, the oil is extracted and concentrated by steam distillation.
Oregano essential oil can be mixed with a carrier oil and applied topically. However, it should not be consumed orally.
Oregano oil extract, on the other hand, can be produced via several extraction methods using compounds like carbon dioxide or alcohol. It's widely available as a supplement and can often be found in pill or capsule form.
Oregano contains compounds called phenols, terpenes, and terpenoids. They have powerful antioxidant properties and are responsible for its fragrance:
- Carvacrol. The most abundant phenol in oregano, it has been shown to stop the growth of several different types of bacteria.
- Thymol. This natural antifungal can also support the immune system and protect against toxins.
- Rosmarinic acid. This powerful antioxidant helps protect against damage caused by free radicals.
These compounds are thought to underlie oregano's many health benefits.
Here are 9 potential benefits and uses of oregano oil.
Oregano and the carvacrol it contains may help fight bacteria.
The Staphylococcus aureus bacterium is one of the most common causes of infection, resulting in ailments like food poisoning and skin infections.
One particular study looked at whether oregano essential oil improved the survival of 14 mice infected with Staphylococcus aureus.
It found that 43% of the mice given oregano essential oil lived past 30 days, a survival rate nearly as high as the 50% survival rate for mice that received regular antibiotics.
Research has also shown that oregano essential oil may be effective against some potentially antibiotic-resistant bacteria.
This includes Pseudomonas aeruginosa and E. coli, both of which are common causes of urinary and respiratory tract infections.
Although more human studies on the effects of oregano oil extract are needed, it contains many of the same compounds as oregano essential oil and may offer similar health benefits when used as a supplement.
One mouse study found oregano essential oil to be almost as effective as antibiotics against common bacteria, though much more research is needed.
2. May Help Lower Cholesterol
Studies have shown that oregano oil may help lower cholesterol.
In one study, 48 people with mildly high cholesterol were given diet and lifestyle advice to help lower their cholesterol. Thirty-two participants were also given 0.85 ounces (25 mL) of oregano oil extract after each meal.
After 3 months, those given the oregano oil had lower LDL (bad) cholesterol and higher HDL (good) cholesterol, compared with those who were just given diet and lifestyle advice.
Carvacrol, the main compound in oregano oil, has also been shown to help lower cholesterol in mice that were fed a high fat diet over 10 weeks.
The mice given carvacrol alongside the high fat diet had significantly lower cholesterol at the end of the 10 weeks, compared with those that were just given a high fat diet.
The cholesterol-lowering effect of oregano oil is thought to be the result of the phenols carvacrol and thymol.
Studies have shown that oregano may help lower cholesterol in people and mice with high cholesterol. This is thought to be the result of the compounds carvacrol and thymol.
3. Powerful Antioxidant
Antioxidants help protect the body from damage caused by free radicals.
It's thought that free radical damage plays a role in aging and the development of some diseases, such as cancer and heart disease.
Free radicals are everywhere and a natural product of metabolism.
However, they can build up in the body through exposure to environmental factors, such as cigarette smoke and air pollutants.
One older test-tube study compared the antioxidant content of 39 commonly used herbs and found that oregano had the highest concentration of antioxidants.
It found that oregano contained 3–30 times the levels of antioxidants in the other herbs studied, which included thyme, marjoram, and St. John's wort.
Gram per gram, oregano also has 42 times the antioxidant level of apples and 4 times that of blueberries. This is thought to be mostly due to its rosmarinic acid content.
Because oregano oil extract is very concentrated, you need much less oregano oil to reap the same antioxidant benefits as you would from fresh oregano.
Fresh oregano has a very high antioxidant content. In fact, it's much higher than that of most fruits and vegetables, gram per gram. The antioxidant content is concentrated in oregano oil.
4. Could Help Treat Yeast Infections
Yeast is a type of fungus. It can be harmless, but overgrowth can result in gut problems and infections, such as thrush.
The most well-known yeast is Candida, which is the most common cause of yeast infections worldwide.
In test-tube studies, oregano essential oil has been found to be effective against five different types of Candida, such as those that cause infections in the mouth and vagina. In fact, it was more effective than any other essential oil tested.
Test-tube studies have also found that carvacrol, one of the main compounds of oregano oil, is very effective against oral Candida.
High levels of the yeast Candida have also been associated with some gut conditions, such as Crohn's disease and ulcerative colitis.
A test-tube study on the effectiveness of oregano essential oil on 16 different strains of Candida concluded that oregano oil may be a good alternative treatment for Candida yeast infections. However, more research is needed.
Test-tube studies have shown that oregano essential oil is effective against Candida, the most common form of yeast.
5. May Improve Gut Health
Oregano may benefit gut health in a number of ways.
Gut symptoms like diarrhea, pain, and bloating are common and can be caused by gut parasites.
One older study gave 600 mg of oregano oil to 14 people who had gut symptoms as a result of a parasite. After daily treatment for 6 weeks, all participants experienced a reduction in parasites, and 77% were cured.
Participants also experienced a reduction in gut symptoms and tiredness associated with the symptoms.
Oregano may also help protect against another common gut complaint known as "leaky gut." This happens when the gut wall becomes damaged, allowing bacteria and toxins to pass into the bloodstream.
In a study on pigs, oregano essential oil protected the gut wall from damage and prevented it from becoming "leaky." It also reduced the number of E. coli bacteria in the gut.
Oregano oil may benefit gut health by killing gut parasites and protecting against leaky gut syndrome.
6. May Have Anti-Inflammatory Properties
Inflammation in the body is linked to a number of adverse health effects.
Research has shown that oregano oil may reduce inflammation.
One mouse study found that oregano essential oil, along with thyme essential oil, reduced inflammatory markers in those that had artificially induced colitis.
Carvacrol, one of the key components in oregano oil, has also been shown to reduce inflammation.
One study directly applied different concentrations of carvacrol to the swollen paws or ears of mice. Carvacrol reduced paw and ear swelling by 35–61% and 33–43%, respectively.
Oregano oil and its components may help reduce inflammation in mice, though human studies are needed.
7. Could Help Relieve Pain
Oregano oil has been investigated for its painkilling properties.
One older study in mice tested standard painkillers and essential oils, including oregano essential oil, for their ability to relieve pain.
It found that oregano essential oil significantly reduced pain in mice, exerting effects similar to those of the commonly used painkillers fenoprofen and morphine.
The research proposed these results were likely due to the carvacrol content of oregano.
A similar study found that oregano extract reduced pain in rats, and that the response was dose-dependent, meaning the more oregano extract the rats consumed, the less pain they appeared to feel.
Oregano oil may significantly reduce pain in mice and rats, exerting pain-relieving effects similar to those of some commonly used medications.
8. May Have Cancer-Fighting Properties
A few studies have indicated that carvacrol, one of the compounds of oregano oil, may have cancer-fighting properties.
In test-tube studies on cancer cells, carvacrol has demonstrated promising results against lung, liver, and breast cancer cells.
It has been found to inhibit cell growth and cause cancer cell death.
Although this is promising research, no studies have been carried out on people, so more research is needed.
Preliminary studies have shown that carvacrol — the most abundant compound in oregano oil — inhibits cancer cell growth and causes cell death in lung, liver, and breast cancer cells.
9. May Help You Lose Weight
Thanks to oregano's carvacrol content, oregano oil may aid weight loss.
In one study, mice were fed either a normal diet, high fat diet, or high fat diet with carvacrol. Those given carvacrol alongside their high fat diet gained significantly less weight and body fat than those just given a high fat diet.
Furthermore, carvacrol appeared to reverse the chain of events that can lead to the formation of fat cells.
More research is needed to demonstrate that oregano oil has a role in weight loss, but it may be worth trying as part of a healthy diet and lifestyle.
Oregano oil may be beneficial for weight loss through the action of carvacrol, though human studies are needed.
How to Use Oregano Oil
Oregano oil extract is widely available in capsule and tablet form. It can be bought from most health food shops or online.
Because the strength of oregano supplements can vary, it's important to read the directions on the individual packet for instructions on how to use the product.
Oregano essential oil is also available and can be diluted with a carrier oil and applied topically. Note that no essential oil should be ingested.
There's no standard effective dose of oregano essential oil. However, it's often mixed with around 1 teaspoon (5 mL) of olive oil per drop of oregano essential oil and applied directly to the skin.
Like other essential oils, keep in mind that oregano essential oil should not be consumed orally.
If you're interested in taking oregano oil extract but currently taking prescription medications, make sure to consult your healthcare provider before adding it to your regimen.
In addition, oregano oil extract is not generally recommended for women who are pregnant or breastfeeding.
Oregano oil extract can be purchased in pill or capsule form and taken orally. Oregano essential oil is also available and can be diluted with a carrier oil and applied to the skin.
The Bottom Line
Oregano oil extract and oregano essential oil are both relatively cheap and readily available.
Oregano is higher in antioxidants than most fruits and vegetables, and it's packed full of powerful compounds called phenols.
Oregano also contains compounds that may be effective against bacterial and fungal infections, inflammation, and pain, among other conditions.
Overall, it appears to have several health benefits and may be useful as a natural treatment for some common health complaints.
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EcoWatch Daily Newsletter
By Joe Roman and Taylor Ricketts
The COVID-19 pandemic in the United States is the deepest and longest period of malaise in a dozen years. Our colleagues at the University of Vermont have concluded this by analyzing posts on Twitter. The Vermont Complex Systems Center studies 50 million tweets a day, scoring the "happiness" of people's words to monitor the national mood. That mood today is at its lowest point since 2008 when they started this project.
The Hedonometer measures happiness through analysis of key words on Twitter, which is now used by one in five Americans. This chart covers 18 months from early 2019 to July 2020, showing major dips in 2020. hedonometer.org<p>These same tweets also indicate a potential salve. Before pandemic lockdowns began, doctoral student <a href="https://scholar.google.com/citations?user=0P0ZYbIAAAAJ&hl=en" target="_blank">Aaron Schwartz</a> <a href="https://doi.org/10.1002/pan3.10045" target="_blank">compared tweets before, during, and after visits to 150 parks, playgrounds and plazas</a> in San Francisco. He found that park visits corresponded with a spike in happiness, followed by an afterglow lasting up to four hours.</p><p>Tweets from parks contained fewer negative words such as "no," "not" and "can't," and fewer first-person pronouns like "I" and "me." It seems that nature makes people more positive and less self-obsessed.</p><p>Parks keep people happy in times of global crisis, economic shutdown and public anger. Research has also shown that transmission rates for COVID-19 are <a href="https://www.sfchronicle.com/news/article/Is-risk-of-coronavirus-transmission-lower-15287602.php" target="_blank">much lower outdoors than inside</a>. As scholars who study <a href="https://scholar.google.com/citations?user=yFzb2EUAAAAJ&hl=en" target="_blank">conservation</a> and how nature <a href="https://scholar.google.com/citations?user=CCnUeN8AAAAJ&hl=en" target="_blank">contributes to human well-being</a>, we see opening up parks and creating new ones as a straightforward remedy for Americans' current blues.</p>
Park Visits Are Up During the Pandemic<p>According to the Hedonometer, sentiments expressed online started trending lower in mid-March as the impacts of the pandemic became clear. As lockdowns continued, they registered the lowest sentiment scores on record. Then in late May, effects from George Floyd's death in police custody and the following protests and police response once again could be seen on Twitter. May 31, 2020 was the saddest day of the project.</p><p>Recent surveys of park visitors around the University of Vermont have shown people <a href="https://osf.io/preprints/socarxiv/sd3h6" target="_blank">using green spaces more</a> since COVID-19 lockdowns began. Many people reported that parks were highly important to their well-being during the pandemic.</p>
<div id="4c7e4" class="rm-shortcode" data-rm-shortcode-id="bc0ac146ab2a94228f32d973fc2ab272"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1289428912879964160" data-partner="rebelmouse"><div style="margin:1em 0">#Goldengatepark #sf #quarantinemood https://t.co/9l3ufnbkt6</div> — Suvd (@Suvd)<a href="https://twitter.com/Suvd19486406/statuses/1289428912879964160">1596258783.0</a></blockquote></div><p>The powerful effects of nature are strongest in large parks with more trees, but smaller neighborhood parks also provide a significant boost. Their impact on happiness is real, measurable and lasting.</p><p>Twitter records show that parks increase happiness to a level similar to the bounce at Christmas, which typically is the happiest day of the year. Schwartz has since expanded his <a href="https://arxiv.org/pdf/2006.10658.pdf" target="_blank">Twitter study</a> to the 25 largest cities in the U.S. and found this bounce everywhere.</p><p>Parks and public spaces won't cure COVID-19 or stop police brutality, but they are far more than playgrounds. There is growing evidence that parks contribute to mental and physical health in a range of communities.</p><p>In a 2015 study, for example, Stanford researchers sent people out for one of two walks: through a local park or on a busy street. Those who walked in nature showed <a href="https://doi.org/10.1016/j.landurbplan.2015.02.005" target="_blank">improved moods and better memory performance</a> compared to the urban group. And a team led by <a href="https://penniur.upenn.edu/people/eugenia-gina-south" target="_blank">Gina South</a> of the University of Pennsylvania showed in a 2018 study that greening and cleaning up blighted vacant lots in Philadelphia <a href="http://dx.doi.org/10.1001/jamanetworkopen.2018.0298" target="_blank">reduced local residents' feelings of depression, worthlessness and poor mental health</a>.</p>
Creative Strategies<p>It isn't easy to create new parks on the scale of San Francisco's Golden Gate Park or the Washington Mall, but smaller projects can expand outdoor space. Options include greening vacant lots, closing streets and investing in existing parks to make them safer, greener and shadier and support wildlife.</p><p>These initiatives don't have to be capital-intensive. In the University of Pennsylvania study, for example, renovating a vacant lot by removing trash, planting grass and trees and installing a low fence cost only about US$1,600.</p><p>Urban green space is most needed in neighborhoods that have lacked funding for parks, especially given <a href="https://www.nytimes.com/2020/04/08/nyregion/coronavirus-race-deaths.html" target="_blank">COVID-19's disproportionate impact on Black and Latinx people</a>.</p><p>Cities can also create parklike spaces by <a href="https://theconversation.com/with-fewer-cars-on-us-streets-now-is-the-time-to-reinvent-roadways-and-how-we-use-them-140408" target="_blank">closing streets to cars</a>. Many cities worldwide are currently retooling their transportation systems for the post-COVID-19 world in order to <a href="https://thecityfix.com/blog/bicycles-slower-speeds-livable-city-paris-mayor-anne-hidalgo-plans-ambitious-second-term-dario-hidalgo/" target="_blank">reallocate public space</a>, widen sidewalks and make more space for nature.</p><p>Urban designers, artists, ecologists and other citizens can play a direct role, too, creating pop-up parks and green spaces. Some advocates <a href="https://www.bloomberg.com/news/articles/2017-09-15/a-brief-history-of-park-ing-day" target="_blank">transform parking spaces into mini-parks</a> with grass, potted trees and seating for just the time on the meter, to make a larger point about turning so much public space over to cars.</p><p>Or cities can invest a little more. Minneapolis, Cincinnati and Arlington, Virginia, have won <a href="https://www.tpl.org/parkscore" target="_blank">national recognition</a> for their ambitious investments in public park systems. These areas could serve as models for neighborhoods that lack access to parks.</p>
<div id="25fd0" class="rm-shortcode" data-rm-shortcode-id="383f0d2df0237e9359c30dcce6cd6c42"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1276558744835379201" data-partner="rebelmouse"><div style="margin:1em 0">Looking to safely get outside? Check out the best parks for social distancing in this year's top ten ParkScore citi… https://t.co/HJjEtDsrTD</div> — The Trust for Public Land (@The Trust for Public Land)<a href="https://twitter.com/tpl_org/statuses/1276558744835379201">1593190296.0</a></blockquote></div>
A New Park Deal?<p>The United States has historically driven economic recovery with major infrastructure investments, like the New Deal in the 1930s and the 2009 <a href="https://www.investopedia.com/terms/a/american-recovery-and-reinvestment-act.asp" target="_blank">American Reinvestment and Recovery Act</a>. Such investments could easily include nature-positive spaces.</p><p>Parks are not panaceas, as evidenced by the widely publicized <a href="https://www.nytimes.com/2020/07/06/nyregion/amy-cooper-false-report-charge.html" target="_blank">racist confrontation between a white woman and a Black birder</a> in New York's Central Park in early July. But Hedonometer data add to a <a href="https://advances.sciencemag.org/content/5/7/eaax0903?utm_source=miragenews&utm_medium=miragenews&utm_campaign=news" target="_blank">growing body of evidence</a> that they provide <a href="https://doi.org/10.1073/pnas.1807504116" target="_blank">clear mental health benefits</a>. Creating and expanding parks also <a href="https://www.nrpa.org/contentassets/f568e0ca499743a08148e3593c860fc5/economic-impact-study-summary.pdf" target="_blank">generates jobs and economic activity</a>, with much of the money spent locally.</p><p>We believe investments in nature are well worth it, offering both short-term solace in difficult times and long-term benefits to health, economies and communities.</p>
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New York State Attorney General Letitia James announced Thursday that she will attempt to dismantle the National Rifle Association (NRA), arguing that years of corruption and mismanagement warrant the dissolution of the activist organization, as CNN reported.
<div id="7eb49" class="rm-shortcode" data-rm-shortcode-id="83819841e380a7072ec66d3186c160e8"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1291705003984510977" data-partner="rebelmouse"><div style="margin:1em 0">🚨RESPONSE to #Mauritius #OILSpill 🚨 “Once again we see the risks in oil: aggravating the #ClimateCrisis, as well as… https://t.co/PBLioZat6X</div> — Greenpeace Africa (@Greenpeace Africa)<a href="https://twitter.com/Greenpeaceafric/statuses/1291705003984510977">1596801446.0</a></blockquote></div><p>"There is no guaranteed safe way to extract, transport and store fossil fuel products. This oil leak is not a twist of fate, but the choice of our twisted addiction to fossil fuels. We must react by accelerating our withdrawal from fossil fuels," Greenpeace Africa Senior Climate and Energy Campaign Manager Happy Khambule said in a <a href="https://www.greenpeace.org/africa/en/press/11864/greenpeace-africa-response-to-mauritius-oil-spill/?utm_campaign=oil&utm_source=t.co&utm_medium=post&utm_content=single-image&utm_term=mauritius-oil-spill-reactive" target="_blank">statement Friday</a>. "Once again we see the risks in oil: aggravating the <a href="https://www.ecowatch.com/tag/climate-crisis" target="_self">climate crisis</a>, as well as devastating oceans and <a href="https://www.ecowatch.com/tag/biodiversity" target="_self">biodiversity</a> and threatening local livelihoods around some of Africa's most precious lagoons."</p>
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By Gianna-Carina Grün
While the first countries are easing their lockdowns, others are reporting more and more new cases every day. Data for the global picture shows the pandemic is far from over. DW has the latest statistics.
What's the Current Global Trend?<p>The goal for all countries is to make it to the blue part of the chart and stay there. Countries and territories in this section reported zero new cases both this week (past seven days) and the week before.</p><p>Currently, that is the case for 14 out of 209 countries and territories. </p>
How Has the Covid-19 Trend Evolved Over the Past Weeks?<p>The situation has improved slightly: 87 countries report more cases this week than last week. </p>
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Hurricane forecasters predict the 2020 hurricane season will be the second-most active in nearly four decades.
Three years ago, scientists predicted it would happen. Now, new NASA satellite imagery confirms it's true: two ice caps in Canada's Nunavut province have disappeared completely, providing more visual evidence of the rapid warming happening near the poles, as CTV News in Canada reported.
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