Eating Raw Organic Produce Can Give Your Gut a Healthy Boost
By Gigen Mammoser
When choosing organic or conventional produce, there's no simple comparison, even if it's apples to apples.
However, in a new study published in the journal Frontiers in Microbiology, researchers found that when comparing conventionally grown apples to their organic counterparts, organic apples harbored a significantly more diverse bacteria population.
Conventional apples and organic apples both contained about the same amount of total bacteria, about 100 million per apple. But, that's only if you eat the whole thing — stem, seeds and all.
The production method dictated the types and variety of bacterial colonies.
And that can mean good things for gut health.
Raw Organic Fruits and Vegetables May Be Better for Your Gut
"Vegetables and fruits, especially when consumed raw, represent the most important source for a diverse microbial community, which is mandatory for a healthy gut microbiome and our immune system," said Birgit Wassermann, a PhD student at the Graz University of Technology in Austria, and first author of the study.
Wassermann and her fellow researchers chose to look at apples because of their immense popularity throughout the world.
About 83 million apples were grown in 2018 and production continues to grow. Raw fruits and vegetables are an important source of gut bacteria — cooking tends to kill off all the bacteria.
In the comparison of organic and conventional apples, not only was bacteria more diverse in organic production, but it was also associated with the presence of so-called "good" bacteria Lactobacillus, a common probiotic.
Conversely, conventional apples were more likely to have potentially pathogenic bacteria like Escherichia and Shigella, which are known to cause food poisoning symptoms like diarrhea and cramps.
"The highly diverse microbiome of organically managed apples might limit or hamper the abundance of human pathogens, simply by outcompeting them," said Wassermann. "Probably, the microbial pool organic apple trees are exposed to is more diverse and more balanced and potentially supports the plant also in resistance during pathogen attack."
When it comes to gut health, however, Wassermann explained that it's not as simple as choosing organic over conventional apples.
Such a simple inference can't be drawn from her work alone. Instead, she emphasizes that diverse populations of bacteria — whether found in nature, apples, or the human gut — tend to be more beneficial no matter the environment where they are found.
And for most people, simply eating more fresh fruits and vegetables is a more important first step than discriminating between apples.
"Organic or conventional? Pretty irrelevant. The main thing is that people eat more fresh produce in general," said Wassermann.
With a focus on bacteria and by extension, gut health, the research adds yet another lens through which to view the ongoing debate for consumers on how they choose to buy produce.
And the organic versus conventional debate is far from settled.
But as questions about the benefits of either method have become more nuanced — it's not as simple as saying one is "better" than the other — consumers now have more awareness about what they want out of their produce.
The debate over organic and conventional fruits and vegetables has primarily focused on four aspects: nutrition, environmental impact, cost to consumers, and pesticides.
Depending on how important these factors are to you should inform your purchasing choice rather than strictly choosing one over the other.
What Do ‘Organic’ and ‘Conventional’ Even Mean?
Organic is a label conferred by the United States Department of Agriculture (USDA) on foods that are grown in accordance with certain federal guidelines. These guidelines include things like what kinds of pesticides can be used, soil additives, and how animals are raised.
Conventional refers to modern, industrial agriculture which includes the use of chemical fertilizers, pesticides, and genetically modified organisms.
Some studiesTrusted Source have found that organic produce likely isn't any more nutritious than conventional, but it will reduce exposure to pesticides and harmful bacteria.
However, that's not to say that organic produce is completely free of pesticides — it's not.
Your choice should also be impacted by other health factors as well, such as pregnancy or other chronic conditions.
Studies in recent years have looked at the prevalence of pesticide exposure among pregnant women via produce, as well as the potential for prenatal pesticideTrusted Source exposure to lead to intellectual disabilities and autism spectrum disorder.
For most consumers, a practical place to start is identifying which fruits and vegetables are more prone to having exposure to high amounts or different varieties of pesticides.
The Environmental Working Group (EWG), an environmental and consumer advocacy group, annually publishes their list of the Dirty Dozen, which are the fruits and vegetables with the highest rates of pesticide contamination, and the Clean Fifteen, which are those with the lowest rates.
The worst offenders from 2019 include:
- strawberries (coming in at #1)
For the produce with the least amount of pesticide exposure, reach for:
- sweet corn
- frozen sweet peas
"I usually follow the EWG Dirty Dozen and Clean Fifteen designations," said Kristin Kirkpatrick, MS, RD, LD, the manager of Wellness Nutrition Services at Cleveland Clinic Wellness Institute.
"There are also certain things that I always recommend to purchase organic, like dairy productsTrusted Source and strawberries, as well as foods that I usually tell my clients to skip the cost and go with conventional, like produce with a significant outer layer such as pineapples or bananas," she said.
Organic foods may offer some health benefits, but they'll also cost more, and that's a major consideration for most families.
A 2015 study from Consumer Reports found that organic apples were anywhere from 20 to 60 percent more expensive than their conventional counterparts. Milk was similarly 20 to 64 percent and for things like organic strawberries and zucchinis, consumers could end up paying twice as much.
In short, choosing how and why to pick conventional or organic produce is a serious balancing act. But one thing is for certain: You should be eating more fruits and vegetables no matter how they are grown.
"The most important thing I tell my patients is this: Increasing your fruit and vegetable consumption is far more important than organic versus non-organic. If you choose not to eat fruits and vegetables because you can't afford organic, that's the wrong choice. Any fruits and vegetables are better than none," said Kirkpatrick.
Reposted with permission from our media associate Healthline.
EcoWatch Daily Newsletter
Independence Day weekend is a busy time for coastal communities as people flock to the beaches to soak up the sun during the summer holiday. This year is different. Some of the country's most popular beach destinations in Florida and California have decided to close their beaches to stop the surge in coronavirus cases.
- The U.S. Isn't in a Second Wave of Coronavirus – The First Wave ... ›
- COVID-19 Masks Are Polluting Beaches and Oceans - EcoWatch ›
- No Social Distancing or Mask Requirement at Trump's Mt ... ›
- Trump's Fireworks Show at Mt. Rushmore Is a Dangerous Idea, Fire ... ›
For some combat veterans, the Fourth of July is not a time to celebrate the independence of the country they love. Instead, the holiday is a terrifying ordeal. That's because the noise of fireworks – loud, sudden, and reminiscent of war – rocks their nervous system. Daily fireworks in many U.S. cities in recent weeks have no doubt been interfering with the sleep and peace of mind of thousands of veterans.
What Is PTSD?<p><a href="https://theconversation.com/veterans-refugees-and-victims-of-war-crimes-are-all-vulnerable-to-ptsd-130144" target="_blank">PTSD</a> can occur when someone is exposed to extreme exposure traumatic experience. Typically, the trauma involves a threat of death, serious injury, or sexual violence. Along with war veterans, it happens to refugees; to victims of gun violence, rape and other physical assaults; and to survivors of car accidents and natural disasters like earthquakes or tornadoes.</p><p>PTSD can also happen by witnessing trauma or its aftermath, often the case with <a href="https://www.psychiatry.org/patients-families/ptsd/what-is-ptsd" target="_blank">first responders</a> and <a href="https://www.psychologytoday.com/us/blog/the-many-faces-anxiety-and-trauma/202006/invisible-wounds-the-frontline-heroes" target="_blank">front-line workers</a>.</p><p>All this adds up to tens of millions of Americans. Up to 30% of combat veterans and first responders, and 8% of civilians, <a href="https://www.ptsd.va.gov/professional/treat/essentials/epidemiology.asp" target="_blank">fulfill the diagnostic criteria for PTSD</a>. And that criteria is not easily met: symptoms of PTSD include nightmares, flashbacks, intrusive trauma memories, difficulty sleeping, avoidance of reminders of trauma, negative emotions, and what we call "hyperarousal symptoms."</p>
Fireworks Can Trigger Flashbacks<p>Hyperarousal, a core component of PTSD, occurs when a person is hyper-alert to any sign of threat – constantly on edge, easily startled and continuously screening the environment.</p><p>Imagine, for instance, stepping down the stairs in the dark after hearing a noise; you're worried an intruder might be downstairs. Then a totally unpredictable loud sound explodes right outside your window.</p><p>For people with PTSD, that sound – reminiscent of gunfire, a thunderstorm or a car crash – <a href="https://theconversation.com/veterans-refugees-and-victims-of-war-crimes-are-all-vulnerable-to-ptsd-130144" target="_blank">can cause</a> a panic attack or trigger flashbacks, a sensory experience that makes it seem as if the old trauma is happening here and now. Flashbacks can be so severe that combat veterans may suddenly drop to the ground, the same way they would when an explosion took place in combat. Later, the experience can trigger nightmares, insomnia or worsening of other PTSD symptoms.</p><p>Those of us who set off fireworks need to ask ourselves: Are those few minutes of fun worth the hours, days, or weeks of torment that will begin for some of our friends and neighbors – including many who put their lives on the line to protect us?</p>
Who Else Is Affected?<p>Millions of others, though not diagnosed with PTSD, may similarly be affected by fireworks. <a href="https://adaa.org/about-adaa/press-room/facts-statistics" target="_blank">One in five Americans</a> have an anxiety disorder, many with symptoms of hyperarousal. Also impacted are those with autism or developmental disabilities; they find it difficult to cope with the noise, or just the drastic change from life routines. Then there are people who have to work, holiday or not: nurses, physicians and first responders, who have to be up at 4 a.m. for a 30-hour shift.</p><h3>How to Reduce the Negative Impact</h3><p>There are ways to reduce how fireworks affect others:</p><ul><li>For those with PTSD, the unexpected nature of fireworks is probably the worst part. So at least make it as predictable as possible. Do it in designated areas during designated times. Don't explode one, for instance, two hours after the designated time window. And avoid setting them off <a href="https://www.theguardian.com/society/2018/jul/04/fireworks-ptsd-fourth-of-july-veterans-shooting-survivors" target="_blank">on the 3rd</a>. People are less prepared then.</li><li>If you're aware that a veteran or trauma survivor lives in the neighborhood, move the noise as far as possible from their home and give them prior warning. Consider putting a sign in your front yard noting the time you'll set the fireworks.</li><li>Remember, it doesn't have to be super loud to make it fun. Consider using <a href="https://thehill.com/opinion/energy-environment/504964-its-time-for-silent-fireworks" target="_blank">silent fireworks</a>. And you don't have to be the one who lights the fireworks. Simply enjoy watching while your city or township does it safely.</li></ul>
- 4 Ways Acupuncture Helps Restore Balance to the Body - EcoWatch ›
- Why Can't Veterans Get Medical Marijiuana for PTSD When People ... ›
Koala populations across parts of Australia are on track to become extinct before 2050 unless "urgent government intervention" occurs, warns a year-long inquiry into Australia's "most loved animal." The report published by the Parliament of New South Wales (NSW) paints a "stark and depressing snapshot" of koalas in Australia's southeastern state.
- First Koalas Rescued From Bushfires Returned to the Wild - EcoWatch ›
- Koalas Found 'Massacred' at Logging Site - EcoWatch ›
- Koalas Become 'Functionally Extinct' in Australia With Just 80000 Left ›
- Koalas Face Extinction Threat After Wildfires: New Report - EcoWatch ›
By Jeff Berardelli
For the past year, some of the most up-to-date computer models from the world's top climate modeling groups have been "running hot" – projecting that global warming may be even more extreme than earlier thought. Data from some of the model runs has been confounding scientists because it challenges decades of consistent projections.
International Effort to Evaluate Climate Models<p>For the past 25 years the international community has been evaluating and comparing the world's most sophisticated climate models produced by various teams at universities, research centers, and government agencies. The effort is organized by the World Climate Research Programme under the United Nations World Meteorological Organization.</p><p>Climate models are complicated computer programs composed of millions of lines of code that calculate the physical properties and interactions between the main climate forces like the atmosphere, oceans, and solar input. But models also go a lot further, incorporating other systems like ice sheets, forests, and the biosphere, to name a few. The models are then used to simulate the real-world climate system and project how certain changes, like added pollution or land-use changes, will alter the climate.</p><p>Every few years there is a new comprehensive international evaluation called the Coupled Model Intercomparison Project (CMIP). In the sixth such effort, known as CMIP6 and now under way, experts are reviewing about 100 models.</p><p>Information gleaned from this effort will act as a scientific foundation for the U.N.'s Intergovernmental Panel on Climate Change (IPCC) next major assessment report, scheduled for release in 2021. The goal of the report – the sixth in 30 years – is to inform the international community about how much the climate has changed, and, importantly, how much change can be expected in coming decades.</p>
A Conundrum Emerges<p>Over the past year, the CMIP6 collection of models being reviewed threw researchers an unexpected curveball: a significant number of the climate model runs showed substantially more global warming than previous model versions had projected. If accurate, the international climate goals would be nearly impossible to achieve, and there would be significantly more extreme impacts worldwide.</p><p>A foundational experiment in every report addresses "sensitivity": If you double levels of carbon dioxide (CO2) that were in the air before the Industrial Revolution, how much warming do the models show? This doubling is not expected for a few more decades, but it is a quick way to communicate the critical role of greenhouse gases in changing the climate.</p><p>The amount of CO2 in the atmosphere has increased by 35% since the 1800s because of the burning of fossil fuels. As a result, global temperatures have already increased by more than 2 degrees Fahrenheit.</p><p>In the first IPCC assessment report, published in 1990, the answer to that question about the impact of doubling carbon dioxide gave a fairly wide range of results – between 2.7-8 degrees F of global warming. Since then, four more assessments issued six to seven years apart reached nearly the exact same conclusion on sensitivity.</p><p>But that sensitivity may, for the first time, change significantly in next year's assessment. Why? Because starting last year, numerous models in the CMIP6 collection displayed even bigger spikes in temperature upon doubling of CO2 concentrations. We're in serious trouble if the climate sensitivity falls in the mid or upper range of the previous assessments. But if the new, higher estimates are correct, the impacts on civilization would be catastrophic.</p>
In the above CarbonBrief interactive visualization, the bars offer a comparison in the range of sensitivity in the CMIP5 models (gray) and CMIP6 models (blue).
New and Encouraging Evidence Is Emerging<p>At first, scientists were uncertain whether the new model runs were on to something, so the international modeling community dug in to produce multiple studies. The results are not yet conclusive, but a gradual collective sigh of relief seems to be materializing.</p><p>"Evidence is emerging from multiple directions that the models which show the greatest warming in the CMIP6 ensemble are likely too warm," explains Dr. Gavin Schmidt, director of NASA's Goddard Institute for Space Studies.</p><p>For example, <a href="https://www.earth-syst-dynam-discuss.net/esd-2020-23/" target="_blank">a study</a> released April 28 evaluated the past performance of the models making up the CMIP6 ensemble. The team assigned weights to each model based upon historical performance of their warming projections, weighing the poorer performing models less. By doing so, both the mean warming and the range of warming scenarios in the CMIP6 ensemble decreased, meaning the warmest models were the ones with weaker historical performance. This result supports a finding that a subset of the models are too warm.</p><p>That conclusion is supported by another new study evaluating one particular model – the Community Earth System Model (CESM2) – that showed greater warming. Using that model, the researchers simulated the climate in the early Eocene era, about 50 million years ago, when rainforests thrived in the Arctic and Antarctic. The CESM2 simulated a historical climate that seems way too warm compared with what is known about that era from geological data, indicating that the model is likely also too warm in its future projections.</p><p>Two other recent studies of the CMIP6 models being evaluated use clever analysis methods to <a href="https://www.google.com/url?q=https://www.earth-syst-dynam-discuss.net/esd-2019-86/&sa=D&ust=1589209938203000&usg=AFQjCNHYwFB-1KqndGfJ4sXdrrm9DpbLaQ" target="_blank">narrow the range</a> of future warming projections and also <a href="https://www.google.com/url?q=https://advances.sciencemag.org/content/6/12/eaaz9549&sa=D&ust=1589209938203000&usg=AFQjCNEhKY1YZ19qgjSZ_hJM14JmzqXOXw" target="_blank">reduce the projected warming</a> of the CMIP6 models by 10 to 15%.</p><p>Through the intensive research spurred by the CMIP6 climate-sensitivity curveball, scientists have been able to turn a confounding challenge into a confidence builder, providing even greater certainty than they had before in both the abilities of the climate science community and in the computer models used. Moreover, the experience has helped unearth uncertainties remaining in the modeling process.</p><p>Experts conclude much of this uncertainty probably lies in the complexity of clouds. "We have been looking as a community at why the models with greater warming are doing what they are doing – and it's tied to cloud feedbacks in the southern mid-latitudes mostly," explains Schmidt.</p><p>In fact, <a href="https://advances.sciencemag.org/content/6/26/eaba1981" target="_blank">a new study</a> addressing the increased sensitivity was published in Science Advances stating, "Cloud feedbacks and cloud-aerosol interactions are the most likely contributors to the high values and increased range of ECS [sensitivity] in CMIP6."</p>
Understanding the Complexity of Clouds<p>It's long been known in climate modeling circles that cloud processes and interactions are a potential weak link for climate modeling. That reality has been brought front and center by the urgent challenges posed during this CMIP6 evaluation period, but the current evaluation of models also provides an opportunity for discovery and improvement.</p><p>Cloud complexity comes from the reality that clouds have a multitude of sizes, altitudes, and textures. Some clouds cool Earth by providing shade, reflecting sunlight back into space. Others act like a blanket, trapping heat and warming the world.</p><p>Given that about <a href="https://www.nasa.gov/vision/earth/lookingatearth/icesat_light.html" target="_blank">70% of the globe</a> is covered by clouds at any given time, it's no surprise that they play an integral role in regulating the climate. The challenge is to figure out which types of clouds will increase, which will decrease, and what the net effect will be on cooling or warming as the climate changes.</p><p><a href="https://www.nature.com/articles/s41561-019-0310-1" target="_blank">One study</a> last year reached an alarming conclusion: Left unchecked, the release of CO2 into the atmosphere may lead to a tipping point where shallow low clouds disappear – leading to runaway, catastrophic warming of nearly 15 degrees F. While scientists see that outcome as only a remote possibility, it drives home the urgent need to better understand clouds.</p><p>"We have a saying at NOAA: It isn't rocket science – it's much, much harder than that," quips Dr. Chris Fairall, ATOMIC's lead investigator. "One of the major problems for modeling is there is not clean separation of scales." The photo below is one that Fairall took from the NOAA P-3 aircraft.</p>
Investigating the Secrets of Clouds<p>To address the urgent question about the dynamics and role of clouds in a warming world, NOAA and European partners launched their ongoing research effort unprecedented in scale. The U.S. contribution, ATOMIC – short for Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign – is an international science mission that was featured recently on "<a href="https://www.cbsnews.com/video/study-aims-to-examine-links-between-climate-change-and-clouds/" target="_blank">CBS This Morning: Saturday</a>."</p>
- New Climate Study: Most Severe Warming Projections Are Now the ... ›
- 7 of the Best New Documentaries About Global Warming - EcoWatch ›
- What's in a Name? Global Warming vs. Climate Change in the Eyes ... ›
To hear many journalists tell it, the spring of 2020 has brought a series of extraordinary revelations. Look at what the nation has learned: That our health-care system was not remotely up to the challenge of a deadly pandemic. That our economic safety net was largely nonexistent. That our vulnerability to disease and death was directly tied to our race and where we live. That our political leadership sowed misinformation that left people dead. That systemic racism and the killing of Black people by police is undiminished, despite decades of protest and so many Black lives lost.
- Climate Crisis Brings India's Worst Locust Invasion in Decades ... ›
- Climate Crisis Made Australia's Historic Wildfires at Least 30% More ... ›
- 4 Climate Crisis Solutions No One Is Talking About - EcoWatch ›
- Top Government Scientist Transferred After Questioning Trump ... ›
- Trump Admin Manipulated Wildfire Science to Encourage Logging ... ›
- NOAA Officials Backed Trump's False Dorian Claims Under Threat ... ›
- Coronavirus and the Terrifying Muzzling of Public Health Experts ... ›
- 'Science Under Siege' From Trump Admin: New Report Warns We ... ›
More than 350 elephants have died in Botswana since May, and no one knows why.
- Botswana Auctions Off First Licenses to Kill Elephants Since Ending ... ›
- 'Heartbreaking' Vulture Poisoning in South Africa Raises Alarm ... ›