Roundup Weed Killer 2022: Uses, Safety & Cancer Risks Latest Updates

Roundup Weed Killer 2022: Uses, Safety & Cancer Risks Latest Updates

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Roundup Weed Killer

When it was first introduced to the market in the 1970s, Roundup was a revolutionary new herbicide, also known as a weed killer. The most often used herbicides around the world are those that include the active component glyphosate, such as this one, and a number of other pesticides. Recent studies have generated evidence that is inconclusive regarding whether or not persons who are exposed to these pesticides are at an increased risk of developing cancer.

The herbicide glyphosate is the active component that is found in the branded product known as Roundup. In 1974, the first commercial sale of the herbicide was made by Monsanto, an American corporation that specializes in agricultural chemicals. Under the Roundup brand name, it manufactured a wide variety of weed killers as well as other types of products. In 2018, the German pharmaceutical and chemical conglomerate Bayer completed the acquisition of Monsanto and immediately began the process of retiring the Monsanto brand name. However, Bayer does not stop producing and selling Roundup.

Roundup, which was first intended for large-scale farming operations, is now also available in variants for the home and garden, and it has emerged as a public favorite for use as a weed killer in residential settings.

An institution of the United Nations classified the active ingredient in Roundup as “possibly carcinogenic” in the year 2015. Following the news, there has been debate regarding whether or not there is a connection between Roundup and cancer. In response to the link claim, the courts and regulatory bodies have provided contradictory interpretations.

The United States Environmental Protection Agency (EPA) released a draught study in 2017 that came to the conclusion that glyphosate, the primary component of Roundup, does not pose a health risk to humans and is “not likely” to cause cancer. The Environmental Protection Agency (EPA) is currently looking into the data on the herbicide to assess whether or not it is a dangerous product.

The state courts in California have heard Roundup litigation regarding glyphosate exposure, and in 2018, a jury awarded a man who blamed the chemical for his cancer a verdict that was in the multimillion-dollar range.

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What Is Glyphosate?

In agricultural settings all throughout the world, glyphosate is by far the most common herbicide used. And products based on glyphosate are the second most popular type of herbicide used in home and garden settings. Glyphosate is a non-selective herbicide, which means that it will destroy almost any plant with which it comes into contact. When the chemical is given to plants, the compound is taken up by the leaves, which then distribute it throughout the plant, all the way down to the roots.

It stops plants from producing particular proteins that are essential for their continued growth. It achieves this effect by blocking the pathway in plants that is responsible for the production of shikimic acid. Plants will perish in a matter of days or weeks if they do not have this pathway. This route is present in certain bacteria, however, it is not present in animals or humans.

When glyphosate is manufactured, it is combined with other chemicals that make it more likely to cling to the weeds and soil that it has been sprayed on. This prevents it from straying into crops or other desirable plants and causing damage to them.

The glyphosate patent that had been held by Monsanto expired in the year 2000, paving the way for other businesses to begin manufacturing and selling herbicides that include the active component. According to the National Pesticide Information Center, as of the year 2015, consumers in the United States could purchase more than 750 different items that included glyphosate.

The liquid form of the chemical is the most common one that corporations provide for sale; nevertheless, acid and salt formulations of the pesticide are also produced by businesses. It can either be applied on the ground using agricultural machines or sprayed from the air using crop dusters. It is also available in a pre-mixed state that may be used in handheld sprayers.

It is common practice to apply glyphosate to fruit, vegetable, and cereal crops, as well as ornamental plantings; however, maize and soybean crops account for approximately two-thirds of the annual application of the pesticide.

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Widespread Use of Roundup Weed Killer

Since Monsanto first produced “Roundup Ready” crops in 1996, the amount of glyphosate used in agriculture has skyrocketed. The genetically engineered seeds were resistant to the effects of the herbicide glyphosate. The herbicide could be sprayed by farmers on their fields, and while it would kill any weeds it came in contact with, their crops would continue to thrive.

In the past, farmers would either use Roundup on their crops before they emerged from the ground or after they had harvested it in order to eliminate any leftover weeds. Because of advances in seed science, farmers were able to use glyphosate even while their crops were still developing. As a direct consequence of this, farmers applied around three times as much glyphosate.


By the year 2016, the usage of glyphosate on these genetically modified crops amounted for 56% of the total worldwide total.


According to research published in Environmental Sciences Europe in 2016, the amount of glyphosate used has increased by over 15 times in just 18 years. In spite of the fact that glyphosate had been around since 1974, the study discovered that between 2004 and 2014, two-thirds of all glyphosate use in the United States had taken place.


Author Charles Benbrook noted that there has been “no insecticide that has come remotely close to such intensive and widespread use” in the United States.


The Environmental Protection Agency (EPA) predicted that annual glyphosate consumption had reached between 280 million and 290 million pounds by the year 2016. It was claimed in an EPA report that even though more farmers were using the herbicide, “it is more likely that those already using glyphosate increased their use and subsequent exposure.” This was despite the fact that some of the rises were due to more farmers using the herbicide.

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Is Roundup Safe?

According to the Environmental Protection Agency (EPA), glyphosate has a “low toxicity for people.” This indicates that in most situations, you would need to be exposed to significant levels of glyphosate for it to become dangerous. However, the presence of other components in glyphosate-based herbicides may cause some formulations to be more hazardous than others.

Researchers often have a difficult time determining whether added chemicals pose an increased risk or how the chemicals may interact with glyphosate. It is often difficult for researchers to assess whether added chemicals pose an increased risk. This is due to the fact that the manufacturers believe certain substances to be trade secrets; as a result, they are exempt from the need that the list of ingredients to identify the chemicals by name. As a consequence of this, researchers have a difficult time pinpointing precisely which compounds and in what proportions are contained within a specific herbicide.


Despite this, the EPA does not recommend too many safety measures to be taken when utilizing these goods.

EPA Precautions for Safe Glyphosate Use

Always be sure you’re following the instructions on the label.

Wear goggles or other eye protection for the few versions that could potentially irritate your eyes.

Stay away from fields that have recently been sprayed for the next 12 hours.

Glyphosate can be hazardous to your health if it comes into contact with your skin, eyes, or if you breathe it in. Exposure can occur in any of these ways. Because the herbicide does not easily vaporize after it has been administered, it typically remains in the area where it was sprayed.

It is difficult for glyphosate to be absorbed via the skin. However, after using it or after touching plants that have been sprayed with it, you should thoroughly wash your hands under running water for at least 15 seconds. If you consume food or smoke while the chemical is still on your hands, you run the risk of ingesting some of it.

Skin and eyes can become irritated after only a brief period of exposure. Inhaling the chemical might cause irritation to your respiratory tract, specifically your nose and throat. Furthermore, ingesting glyphosate can cause burns to the tongue and throat in addition to stomach cramps, diarrhea, and vomiting. It is possible to cause one’s own death by ingesting excessive quantities of the herbicide on purpose.

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Roundup Risks

There is a lack of consensus among international regulators over whether or not prolonged exposure to glyphosate can increase the risk of developing non-Hodgkin lymphoma. In 2015, a department within the World Health Organization of the United Nations came to the conclusion that it is “probably carcinogenic.”

However, the Environmental Protection Agency of the United States has not said that there is a danger of cancer. During the routine evaluation of the herbicide that the government agency is carrying out, it is continuing its investigation into the possible dangers that could arise.

A study that was published in 2019 in the journal Mutation Research/Reviews in Mutation Research found a connection between high-use exposure over a prolonged period of time and a 41 percent increased chance of getting non-Hodgkin lymphoma.


According to Monsanto, “more than 800 rigorous registration studies” that were required by foreign regulators failed to prove that their product posed a risk of cancer. According to the manufacturer, Roundup is completely risk-free when used as directed on the packaging.


In an email sent to Monsanto officials in 2003, the company warned them against claiming that Roundup does not cause cancer. A scientist who works for the company stated that Monsanto had not conducted the appropriate tests to provide evidence in support of the assertion.


According to the National Pesticide Information Center, they were unable to locate any information that would link glyphosate to asthma or any other disorders other from cancer. The centre, in collaboration with the Environmental Protection Agency and the World Health Organization, has investigated the impacts of residue on food and in water, as well as the potential for glyphosate to create health problems in children, pregnant women, animals, and the environment.

Is Glyphosate on Food Dangerous?


According to the World Health Organization, the presence of glyphosate in food does not pose a significant risk of developing cancer.


According to the findings of the group, the two most common ways for people to be exposed to glyphosate are through their food and water. However, a group of pesticide specialists working for the EPA reached the conclusion in 2016 that the amount of the toxin that individuals eat through their foods is insufficient to put them in danger.


The toxicity rating given by the EPA takes into account exposure over a significant amount of time, even an entire lifetime. According to the recommendations of the agency, a male weighing 200 pounds could safely consume roughly 159 milligrammes, which is equal to 0.0056 ounces, of the chemical on a daily basis without suffering any adverse effects.

Risks to Children and Pregnant Women


According to the National Pesticide Information Center, children are more susceptible to the negative effects of pesticides than adults are. However, it was shown that there is no study that indicates youngsters have a higher susceptibility to glyphosate-based herbicides specifically.

The organisation advises that because the livers and kidneys of infants are still developing, they are not able to eliminate pesticides from the body as efficiently as the livers and kidneys of adults. In addition to this, children have a greater ratio of skin area to body weight, take a greater number of breaths per minute, and spend more time with their faces closer to the ground. And it’s very common for kids to put their hands in their mouths. All of these things can enhance a person’s exposure to pesticides.


The centre suggests reducing children’s exposure to all pesticides as much as possible, paying close attention to the advice on product labels, and taking actionable steps such as having children wash their hands after being in close proximity to an area where pesticides are applied.


Rats who were pregnant when they were exposed to high quantities of the herbicides became ill, and some of them developed developmental and reproductive problems. Rat embryos that were subjected to high concentrations of the chemical had difficulty acquiring weight, and some of them developed skeletal abnormalities. These effects were not seen by the researchers in rats who were exposed to lesser doses. No large-scale human studies have been conducted to investigate the effects of glyphosate on pregnancy.

Pets and Other Animals


Pets that come into contact with glyphosate-treated plants while they are still moist can develop health problems as a result of the exposure. The majority of these issues appear to be temporary difficulties. There is not a lot of study that looks into the long-term concerns that pets face.

Symptoms of Glyphosate Exposure in Pets

  • Diarrhea
  • Drooling
  • Drowsiness
  • Loss of Appetite
  • Vomiting

According to the Environmental Protection Agency (EPA), glyphosate poses “no more than slightly harmful” risks to birds. According to the government, it is also “practically non-toxic” to honey bees and aquatic invertebrates. Aquatic invertebrates are comprised of small organisms such as insects, worms, and shellfish.

Some formulations of glyphosate, notably those tailored to kill aquatic vegetation, are available. The toxicity of glyphosate to fish is quite low; nonetheless, some herbicides containing glyphosate may also contain other compounds that are harmful to fish. In order to protect fish and aquatic ecosystems from being harmed, the EPA suggests carefully following any instructions provided on product labels.

Environmental Damage


According to the National Pesticide Information Center, glyphosate in dead leaves loses almost half of its potency in about eight to nine days. On the other hand, the chemical can stay in the soil for as long as six months if the soil and the weather are in the appropriate conditions. However, given how strongly it binds to soil, it is quite improbable that it will make its way into groundwater.

The widespread usage of glyphosate has resulted in some weed species becoming resistant to the active ingredient in glyphosate. A study published in 2014 in the journal Pest Management Science indicated that at least 24 species were immune to glyphosate, and 16 of those had been detected in fields planted with Roundup Ready crops. As a result, there are few other options available to control them.

Alternatives to Roundup


There are a few Roundup substitutes available now that can be used in residential and even commercial landscaping projects. On the other hand, alternatives to farming on a huge scale are harder to come by.

Roundup alternatives include:

  • Vinegar
  • Manual removal
  • Flame
  • Steam
  • Hot-foam weeding
  • Alternative commercial herbicides
  • Mechanical farming (plow, no-till methods)

According to the University of Maryland Extension Service, alternatives that are readily available on the market are not nearly as effective as glyphosate. It suggests combining the use of alternative herbicides with other gardening strategies including maintaining healthy soil and utilising various irrigation techniques. Vinegar was also considered for use in place of other options by the agency.

Burning plants is the primary method utilised by alternatives. Vinegar used in agriculture can swiftly kill plants, especially if they are exposed to direct sunlight. According to the service, vinegar can destroy nearly all of the weeds that have been treated within a single day. However, it also warns that it will kill any plant that it comes into contact with, including plants that are attractive.

In the process of managing landscapes, the North Carolina State Extension Service researched and evaluated a variety of alternatives to the chemical glyphosate. It was discovered that manually pulling weeds was beneficial, but that it needed to be done every two weeks. Weeding with flame, steam, or hot foam has been shown to be effective; however, these methods can only be used in areas that are not flammable, such as cracks or fissures in driveways and sidewalks.

According to the findings of a study that was conducted in Germany in 2016 and published in the Julius-Kühn-Archive, the only alternatives to pesticides that provided equivalent outcomes were mechanised farming approaches. These included utilising a variety of approaches to tilling farmland and travelling through the fields three times.

The researchers, however, pointed out the potential expenditures involved with the additional days, labour, and equipment that would be required for the additional job. They quoted an earlier study that suggested the fees may cut agricultural income by 3% to 36% depending on the circumstances of the farm and the sorts of crops grown in different regions of the country.

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