Antibiotics have transformed medicine. Before their discovery, common bacterial infections quickly became life threatening, and routine surgeries carried significant risks. Today, antibiotics are used to treat bacterial infections from strep throat to sepsis. But, because they have been effective and reliable for so long, many have begun to take them for granted.
Scientists around the world are becoming increasingly concerned about a growing problem: antibiotic resistance. Antibiotic resistance occurs when bacteria develop the ability to survive these antibiotics that were once more than capable of killing them. Common infections are becoming more difficult, expensive, and sometimes impossible to treat. In fact, according to public health experts, antibiotic resistance is one of the most serious health threats of the twenty-first century [2].
The rise of antibiotic resistance is especially alarming because it is not caused by one single factor. It is the result of complex interactions between biology, human behavior, and agricultural and environmental practices. Understanding and acting upon each of these interconnected drivers is key to slowing the spread of resistance and protecting one of medicine's most valuable tools.
Why Are Antibiotics Losing Their Effectiveness?
Figure.1 Percentage of E. Coli Bacterium Resistant to Aminoglycosides in the United Kingdom from 2012 to 2024 [2]
Many may assume bacteria become resistant to antibiotics because they “get used to” antibiotics. And while this is fundamentally correct, antibiotic resistance is a little more complicated than that. In reality, the Global Antibiotic Resistance Surveillance Report: 2025 describes antibiotic resistance as an example of evolution occurring in real time. Bacteria reproduce rapidly, creating greater opportunity for genetic mutations to occur. Occasionally, one of these mutations gives bacteria an advantage to survive when exposed to antibiotics [2]. While susceptible bacteria are killed, the resistance bacteria survive and continue to reproduce, passing on these antibiotic resistance genes [1]. Over time, these strains of bacteria become more and more common. Figure 1 demonstrates this with a 4.5% growth in Aminoglycoside type antibiotic resistance in E. Coli within the United Kingdom from 2012 to 2024. This is just one example of the rapidly increasing issue across the world. It is projected that this statistic will continue to grow unless something is done.
There are several types of mutations that allow bacteria to resist antibiotics. Some bacteria alter the structures that antibiotics target while others produce proteins that pump antibiotics out of the cell before damage can occur [9]. Certain classes of antibiotics can even prevent antibiotics from entering the cell at all [9]. Moreover, researchers have found that bacteria can exchange antibiotic resistant genes through a process called horizontal gene transfer [7]. Rather than waiting around for a useful mutation to occur, bacteria can effectively share survival strategies with neighboring bacterium cells. This means that resistance is capable of spreading so much faster than people even realize. Antibiotic resistance is not an abrupt, sudden event. It is an ongoing evolutionary process driven by natural selection.
Human Impact on Antibiotic Resistance
Although bacterial evolution is a natural process, human behavior is significantly speeding up the process. One common problem is self- medication and misuse of antibiotics. Some people obtain antibiotics without consulting a healthcare provider, while others use leftover prescriptions from previous illnesses [8]. On the other hand, in 2026 over 58% of people reported that they stop taking antibiotics once they begin feeling better instead of completing the full course [8].
At first glance, these decisions seem harmless. However, incomplete or unnecessary treatment of antibiotics exposes bacteria to antibiotic concentrations that are not strong enough to eliminate them completely [8]. The bacteria that survive will reproduce and pass resistance traits to future bacteria.
Awareness and Practices Related to Antibiotic Use and Resistance Among the General Public has also documented widespread misuse of antibiotics for viral illnesses such as colds and the flu. Because antibiotics only work against bacteria, using them to treat viral infections provides no medical benefit while increasing selective pressure on bacteria– even the good bacteria that lives within you. These findings highlight an important reality: the decisions each individual makes regarding antibiotics affects more than their own health. Misuse contributes to a global problem that can impact entire communities.
What Do Farms Have To Do With This?
When most people think about antibiotic resistance, they picture places like the hospital or doctor’s office. Yet, agriculture plays a shocking role in the spread of resistance. One article from MDPI, Environmental Risks of Antibiotics and Antibiotic Resistance Elements: Occurrence, Fate, Assessment, explains how antibiotics are frequently used in livestock to treat disease and maintain animal health, just like in humans [1]. While these medications are beneficial and often necessary for the animals, they are not always fully metabolized and broken down by the animals that receive them [5]. As a result, antibiotic residue and resistant bacteria may be excreted in manure [6]. When manure is applied to agricultural fields as fertilizer, both antibiotics and antibiotic- resistant bacteria can enter the soil [5]. Studies have shown that resistance genes remain in these agricultural environments long after the original antibiotic exposure has ended [1]. The article Antibiotic Resistance, Agriculture, Livestock, One Health, Public Health explains the several pathways through which resistance can move from these farms to human populations. This is illustrated and supported in Environmental Risks of Antibiotics and Antibiotic Resistance Elements: Occurrence, Fate, Assessment as seen in Figure 2. These pathways include contaminated meat products, dairy products, crops grown in fertilized soil, water sources, and direct occupational exposure among agricultural workers [4]. Antibiotic resistance is not confined to healthcare settings– it can circulate throughout the entire food production system.
How Does the Environment Spread Resistance?
Figure 2. Model of Agricultural and Environmental Spread of Antibiotic Resistance to Humans [1]
Similarly to agricultural influences, the environment is often overlooked in regards to antibiotic resistance, but is a crucial piece of the puzzle. Wastewater treatment plants, rivers, lakes, and agricultural runoff all contain diverse bacterial communities [1]. These environments create opportunities for bacteria from different sources to interact and exchange genetic materials through horizontal gene transfer [1]. According to scientists, just like soil, environmental ecosystems can preserve and redistribute resistance over long periods of time, even after water treatment [1]. This means resistance can continue spreading even when antibiotic exposure is no longer occurring directly. These findings further reinforce how antibiotic resistance should not be viewed solely as a medical issue.
What Can Be Done?
Solutions that focus only on healthcare settings overlook major sources of resistance transmission [5]. A common assumption is that scientists can simply create new antibiotics whenever resistance emerges. Unfortunately, an article published by Pearson, Antibiotic Resistance: Understanding and Responding to an Emerging Crisis, explains how developing new drugs is not this simple. The discovery, testing, and approval of new antibiotics often requires years of research and significant financial investment [3]. Meanwhile, bacteria continue to evolve resistance at a fast pace. Researchers have warned that the number of newly developed antibiotics has not kept pace with the growing threat of resistant infections [3]. This challenge highlights an uncomfortable reality: new antibiotics alone will not solve the problem [12]. Making efforts of prevention is just as important as developing future treatments. This is where many have focused their energy on, highlighting the importance of approaching the issue from all angles; from the hospitals to the farms.
The good news is, researchers have identified several strategies that may help slow the spread and mitigate antibiotic resistance. One important approach is antibiotic stewardship. Stewardship programs encourage healthcare providers to prescribe antibiotics only when necessary and ensure that patients receive the correct medication, dose, and duration of treatment [4]. Improved diagnostic testing is a crucial aspect of this to help reduce unnecessary prescriptions by allowing physicians to better distinguish bacterial infections from viral infections [10]. While antibiotic stewardship and improved diagnostics are essential, long- term success will require multifaceted efforts beyond healthcare.
Environmental interventions are just as important in mitigation of antibiotic resistance [11]. Improving wastewater treatment systems may reduce the spread of resistance genes through aquatic environments. This requires systemic change in policy. In Romania, this was successful through banning antibiotic growth promoters, education regarding environmental impacts of antibiotics from a young age and especially within a faculty setting, and investment in surveillance environmental data to track impact trends [11]. This is evidence that environmental change is possible and effective, confirming a one angled approach is futile in mitigation of antibiotic resistance.
In agriculture, reducing unnecessary antibiotic use and managing manure practices may limit contamination and spread of antibiotic resistance. Antibiotic Resistance, Agriculture, Livestock, One Health, Public Health found evidence that conservation farming practices, such as no-till agriculture, may reduce the abundance of certain resistance genes in soil. No- till farming is a technique in which the soil is not disrupted with a plow or till [6]. This minimizes soil runoff and supports a diverse microbiome that naturally mitigates antibiotic resistant bacteria and antibiotic resistant genes [6]. While no single solution will eliminate resistance, combining multiple approaches will help significantly slow its spread.
The Future of Antibiotics Is in Our Hands
Antibiotic resistance is often described as a medical problem, but current research suggests this as incomplete. The bacteria evolving in hospitals, farms, wastewater systems, and natural environments are all connected through a complex network of biological and human interactions. Resistance develops through evolution, spreads through environmental and agricultural pathways, and is accelerated through human behavior. Rather than relying on a single solution, research suggests that slowing antibiotic resistance will require a coordinated effort across healthcare, agriculture, environmental management, and public policy. Although antibiotics remain one of medicine’s most valuable tools, their long- term effectiveness will depend on addressing the interconnected factors that drive resistance before it's too late.
Work Cited
[1] F. Ahmad, A. Zahra, N. Ashraf, and Z. Iqbal, "Environmental Risks of Antibiotics and Antibiotic Resistance Elements: Occurrence, Fate, Assessment.” International Journal of Molecular Sciences, Apr. 03, 2026. Accessed: Jun. 08, 2026. [Online]. Available: https://www.mdpi.com/1422-0067/27/7/3255
[2] O. Auguet, “Global Antibiotic Resistance Surveillance Report 2025,” pp. 14–29, 2025. https://www.who.int/publications/i/item/9789240116337
[3] K. Drlica and D. Perlin, “Antibiotic Resistance: Understanding and Responding to an Emerging Crisis.” Pearson Education Inc, Upper Saddle River, New Jersey, 2011. Accessed: Jun. 04, 2026. [Online]. Available: https://learning.oreilly.com/library/view/antibiotic-resistance-understanding/9780132117388/ch01.html
[4]R.-N. Georges and B. Doumeche, “Understanding Current Antibiotic Resistance to Find New Solutions For 2050.” Springer Berlin Heidelberg, May 29, 2025. doi: https://doi.org/10.1007/s00203-025-04340-0.
[5] A. Health, “Climate Crisis is Accelerating Antibiotic Resistance Across World, Study Says,” The Guardian, Guardian News & Media, May 26, 2026. Accessed: Jun. 10, 2026. [Online]. Available: https://go-gale-com.colorado.idm.oclc.org/ps/i.do?p=ITOF&u=coloboulder&id=GALE%7CA889515027&v=2.1&it=r&sid=ebsco
[6] C. Huang, Y. Zeng, F. Yang, Q. Wu, and Y. Ding, “Exploring the Relationship Between Farmland Management and Manure- Derived Antibiotic Resistance Genes and Their Prevention and Control Strategies.” Multidisciplinary Digital Publishing Institute, China, Nov. 05, 2025. Accessed: Jun. 08, 2026. [Online]. Available: https://www.mdpi.com/2079-6382/14/11/1117
[7] S. Kang, X. Han, J. Gao, and T. Zhou, “Distribution Patterns and Driving Mechanisms of Antibiotic Resistance Genes and Virulence Factor Genes Under the Urbanization Gradient.” Science Direct, Jun. 15, 2026. [Online]. Available: https://www-sciencedirect-com.colorado.idm.oclc.org/science/article/pii/S0304389426012483
[8] V. Keerthana, J. Suriakumar, T. Murugalakshmi, and A. Kumar, “Awareness and Practices Related to Antibiotic Use and Resistance Among the General Public.” International J Med Pub Health, Government Medical College Dindigul, Tamil Nadu India, Feb. 19, 2026. Accessed: Jun. 08, 2026. [Online]. Available: https://research-ebsco-com.colorado.idm.oclc.org/c/j2rgke/viewer/pdf/gmqcwc3nvr
[9] R. Misra, “Mutation Based Mechanisms of Antibiotic Resistance.” American Society for Microbiology, Arizona State University, Tempe, Arizona, Feb. 06, 2026. Accessed: Jun. 04, 2026. [Online]. Available: https://journals-asm-org.colorado.idm.oclc.org/doi/10.1128/mmbr.00101-25
[10] G. Singh and R. Singh, “2022-2025 National Strategy for Preventing Infections and Antibiotic Resistance: A Literature Review.” Journal of Preventative, Diagnostic and Treatment Strategies in Medicine, Dec. 2025. doi: 10.4103/jpdtsm.jpdtsm_97_25.
[11] D. V, B. E, B. L, and P. R, “Antibiotic Resistance, Agriculture, Livestock, One Health, Public Health.” Research Journal of Agricultural Sciences, University of Life Sciences. Accessed: Jun. 08, 2026. [Online]. Available: https://research-ebsco-com.colorado.idm.oclc.org/c/j2rgke/viewer/pdf/ofpisdjpmr
[12] M.-K. Wang, J. Wang, F.-X. Wang, X.-P. He, and T. D. James, “Antibiotic Biomaterials: Disruption of Antibiotic Tolerance for Resistance Prevention.” Coordination Chemistry Reviews, Mar. 01, 2026. Accessed: Jun. 08, 2026. [Online]. Available: https://www-sciencedirect-com.colorado.idm.oclc.org/science/article/pii/S0010854525009385
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