Key Food Safety Issues in the Food Industry

Every year, roughly 600 million people worldwide fall ill after eating contaminated food, and about 420,000 of those cases are fatal. Behind these numbers lies a sprawling network of risks – from invisible bacteria in your kitchen to questionable chemicals in packaged snacks. Food safety isn’t just a concern for regulators or factory managers. It affects every person who eats, which is all of us. Understanding the key issues in food safety helps us make better choices, demand better standards, and protect the health of our communities.

What is food safety and why does it matter? 🔗

Food safety refers to the handling, preparation, and storage of food in ways that prevent foodborne illness and contamination. It covers every step of the food supply chain – from farm to fork. The goal is simple: ensure that the food people consume does not cause harm.

The stakes are high. According to the World Health Organization, unsafe food can cause more than 200 different diseases, ranging from diarrhoea to cancer. Children under five are disproportionately affected – they account for nearly 30% of foodborne disease deaths despite making up only 9% of the global population. Low- and middle-income countries bear the heaviest burden, with the African and South-East Asian regions showing the highest rates of foodborne illness.

Food safety is also an economic issue. Unsafe food in low- and middle-income countries leads to significant losses in productivity and medical expenses, and it disrupts trade. For the food industry, a single contamination incident can lead to massive recalls, lawsuits, and lasting reputational damage.

Major types of food safety hazards 🔗

Food safety hazards generally fall into three categories: biological, chemical, and physical. Each type poses distinct risks and requires specific control measures.

Biological hazards 🔗

These include bacteria, viruses, parasites, and fungi that contaminate food and cause illness. Common culprits include Salmonella, Listeria monocytogenes, E. coli, norovirus, and Campylobacter. According to a WHO-led global study published in PLOS Medicine, diarrhoeal disease agents – particularly norovirus and Campylobacter – were the most frequent causes of foodborne illness globally. Non-typhoidal Salmonella was responsible for the majority of foodborne deaths.

Biological hazards can enter food at any point: during growing (contaminated irrigation water), processing (unsanitary equipment), or preparation (cross-contamination in kitchens). Temperature abuse – keeping food in the “danger zone” between 4°C and 60°C – is one of the most common reasons bacteria thrive in food.

Chemical hazards 🔗

Chemical contamination in food can come from several sources: pesticide residues on crops, veterinary drug residues in animal products, environmental pollutants like heavy metals (lead, mercury, cadmium), and naturally occurring toxins such as aflatoxins produced by moulds on improperly stored grains and nuts. The U.S. FDA works with international partners like the Codex Alimentarius Commission to set science-based limits on allowable chemical contaminants in food.

Industrial chemicals can also migrate into food from packaging materials. Substances like PFAS (per- and polyfluoroalkyl substances), phthalates, and bisphenol A have drawn increasing concern because of their potential to disrupt the endocrine system and affect reproductive health.

Physical hazards 🔗

These are foreign objects that accidentally end up in food – glass fragments, metal shavings, stones, plastic pieces, or even bone fragments. While they may seem less common than biological or chemical hazards, physical contaminants can cause choking, broken teeth, or internal injuries. They typically result from poor manufacturing practices or equipment malfunction.

Microbial contamination: the biggest threat 🔗

Among all food safety hazards, microbial contamination is the most widespread and the most dangerous. Pathogens like Salmonella, Listeria, and E. coli are behind the majority of foodborne disease outbreaks worldwide.

Listeria monocytogenes has been a particular focus of food safety agencies in recent years. It is especially dangerous because it can grow at refrigeration temperatures, making ready-to-eat foods like deli meats, soft cheeses, and smoked fish high-risk products. In 2025, the U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) prioritised in-depth food safety assessments at ready-to-eat meat and poultry facilities that rely solely on sanitation to control Listeria. Scientific research has also revealed that Listeria can form stubborn biofilms on food processing equipment, making it harder to eliminate through standard cleaning procedures.

Salmonella remains another major concern. Regulators have proposed stricter limits on Salmonella levels in poultry products, aiming to make it illegal to sell poultry that exceeds new lower thresholds. This represents a shift from treating Salmonella purely as a handling issue to treating it as a regulatory compliance issue at the production level.

Food additives and their safety concerns 🔗

The modern food industry relies heavily on additives – substances added to food to improve flavour, colour, texture, shelf life, or nutritional value. Common categories include preservatives, emulsifiers, antioxidants, stabilisers, and colouring agents. While most approved additives are safe when used within regulated limits, concerns persist about some specific substances.

In 2025, the U.S. FDA banned FD&C Red No. 3 in food and ingested drugs, marking a significant regulatory action. The agency also approved three new food colours derived from natural sources and asked companies to voluntarily phase out synthetic dyes by the end of 2025. This reflected growing momentum to re-evaluate the safety of long-approved additives using modern scientific methods.

More than 2,500 chemical substances are intentionally added to foods, and an estimated 12,000 additional substances may unintentionally enter the food supply through packaging materials, processing aids, and pesticide residues, according to a National Research Council report. The sheer number of chemicals in the food supply has led to calls for more rigorous and transparent safety assessments.

One notable concern is the GRAS (Generally Recognised as Safe) designation in the United States. Under this system, food and chemical companies can determine on their own that a substance is safe, without mandatory FDA review. This self-certification process has drawn criticism from consumer advocacy groups who argue it creates gaps in oversight.

The role of hygiene in food safety 🔗

Good hygiene practices are the first line of defence against food contamination. This applies at every level – from the farm worker handling produce to the chef in a restaurant kitchen to the consumer at home.

Key hygiene practices include thorough handwashing before and during food preparation, proper cleaning and sanitising of food contact surfaces, separating raw and cooked foods to prevent cross-contamination, cooking food to safe internal temperatures, and refrigerating perishable items promptly. The WHO’s “Five Keys to Safer Food” framework summarises these principles: keep clean, separate raw and cooked, cook thoroughly, keep food at safe temperatures, and use safe water and raw materials.

In food processing facilities, hygiene programmes are often formalised as prerequisite programmes – standard operating procedures covering sanitation, pest control, employee hygiene, and equipment maintenance. These programmes form the foundation on which more advanced food safety systems like HACCP are built.

HACCP: a systematic approach to food safety 🔗

The Hazard Analysis and Critical Control Points (HACCP) system is the globally recognised framework for managing food safety risks. Originally developed in the 1960s by the Pillsbury Company in partnership with NASA to ensure safe food for astronauts, HACCP has since become a cornerstone of food safety regulation worldwide.

Unlike traditional methods that rely on inspecting the finished product, HACCP takes a preventive approach. It requires food businesses to identify potential hazards at each stage of production and put controls in place before problems occur. The system is built on seven principles:

1. Conduct a hazard analysis – identify biological, chemical, and physical hazards associated with the food product. 2. Determine critical control points (CCPs) – pinpoint the specific steps where control is essential to prevent or eliminate hazards. 3. Establish critical limits – set measurable boundaries (such as minimum cooking temperatures) for each CCP. 4. Establish monitoring procedures – define how and when each CCP will be checked. 5. Establish corrective actions – specify what happens when monitoring shows a deviation. 6. Establish verification procedures – confirm that the entire system is working as intended. 7. Establish record-keeping – maintain documentation to prove compliance and support traceability.

The Food and Agriculture Organization (FAO) describes HACCP as a science-based system that addresses hazards throughout the food chain, from primary production to final consumption. The HACCP principles are also embedded in the international standard ISO 22000, which integrates HACCP with broader quality management systems.

Food safety standards and regulatory frameworks 🔗

Effective food safety depends on robust regulations and their enforcement. Around the world, several key frameworks guide how food is produced, processed, and sold.

Codex Alimentarius 🔗

The Codex Alimentarius, established by the FAO and WHO, is a collection of internationally recognised food safety standards, guidelines, and codes of practice. It serves as the reference point for international food trade and helps harmonise food safety standards across countries. Codex standards cover everything from maximum residue limits for pesticides to hygiene practices for specific food categories.

The Food Safety Modernization Act (FSMA) 🔗

In the United States, the Food Safety Modernization Act (FSMA), signed into law in 2011, shifted the U.S. food safety system from a reactive to a preventive approach. Key provisions include mandatory preventive controls for food facilities, enhanced traceability requirements, and stronger oversight of imported foods. The Food Traceability Rule under FSMA requires facilities handling high-risk foods to maintain detailed records that allow regulators to trace contaminated products quickly during recalls.

FSSAI in India 🔗

India’s Food Safety and Standards Authority of India (FSSAI) regulates food safety under the Food Safety and Standards Act, 2006. FSSAI sets standards for food products, regulates food manufacturing and labelling, and conducts food safety audits. Given India’s massive and diverse food supply chain – from street vendors to large-scale processors – enforcement remains a significant challenge but one that FSSAI continues to address through digital licensing, food testing laboratories, and consumer awareness campaigns.

Emerging food safety challenges 🔗

The food safety landscape is constantly evolving. Several emerging issues deserve attention.

Climate change and food safety 🔗

Rising temperatures, changing rainfall patterns, and extreme weather events directly affect food safety. Warmer conditions expand the range and activity of foodborne pathogens. Changes in precipitation can increase the contamination of crops through flooding or contaminated irrigation water. According to WHO, climate change alters the geographic and seasonal patterns of foodborne pathogens, making surveillance systems more important than ever.

Antimicrobial resistance 🔗

Antimicrobial resistance (AMR) is a growing food safety threat. The overuse and misuse of antibiotics in livestock farming contributes to the development of drug-resistant bacteria, which can transfer to humans through the food chain. When foodborne infections are caused by resistant bacteria, treatment becomes harder and outcomes worsen.

Microplastics in food 🔗

Microplastics have been detected in a range of foods, including seafood, salt, and bottled water. Research in 2025 focused on how microplastics migrate into food from food contact materials. While the European Food Safety Authority (EFSA) published a literature review suggesting that actual quantities released from food contact materials may be lower than many studies indicate, the topic remains under active investigation and is increasingly on regulators’ radar.

Food fraud and adulteration 🔗

Food fraud – the deliberate misrepresentation or adulteration of food for economic gain – is a persistent problem. Examples include diluting olive oil with cheaper oils, adding melamine to milk to inflate protein readings, and mislabelling the origin or species of fish. Beyond economic harm, food fraud can have direct health consequences, as seen in the 2008 melamine contamination crisis in China that caused hundreds of thousands of illnesses.

The role of food safety in the supply chain 🔗

Maintaining food safety across the entire supply chain is one of the biggest challenges facing the food industry today. Food passes through many hands – farmers, transporters, processors, distributors, retailers, and food service operators – and a failure at any point can compromise safety.

Cold chain management is critical for perishable foods like dairy, meat, seafood, and fresh produce. Any break in the cold chain allows bacteria to multiply rapidly. Similarly, traceability – the ability to track a food product from its origin to the consumer – is essential for quick and effective recalls when contamination is discovered. The increasing globalisation of food supply chains, where ingredients may be sourced from multiple countries, adds layers of complexity to these challenges.

Technology is playing a larger role in addressing these challenges. Innovations such as blockchain-based traceability systems, AI-powered predictive analytics for contamination risks, and advanced sensor technologies for real-time temperature monitoring are helping food businesses stay ahead of potential hazards.

What consumers can do 🔗

While much of the food safety responsibility lies with producers, processors, and regulators, consumers also play an important part. Simple practices can significantly reduce the risk of foodborne illness at home:

Wash hands and surfaces often – especially before and after handling raw meat. Separate raw meats from ready-to-eat foods during storage and preparation. Cook foods to recommended internal temperatures – for example, poultry should reach at least 74°C (165°F). Refrigerate perishable foods within two hours of purchase or preparation. Read labels carefully for allergen information, expiry dates, and storage instructions.

Consumers can also advocate for better food safety by supporting companies with transparent labelling, choosing products certified under recognised food safety standards, and staying informed about recalls and food safety alerts.

Looking ahead 🔗

Food safety will only grow in importance as the global food system becomes more complex. Population growth, urbanisation, longer supply chains, and shifting consumer preferences toward novel foods like plant-based proteins and lab-grown meat all create new safety considerations. Regulatory frameworks will need to evolve continuously, and international cooperation – through bodies like the Codex Alimentarius Commission and the WHO – will remain essential.

At the same time, the increasing availability of data and advancements in AI and predictive modelling offer promising tools for anticipating and preventing food safety risks before they cause harm.

What do you think? How much attention do you pay to food safety practices in your daily life – from reading labels to handling food at home? And as our food supply chains grow more global and complex, do you believe current regulatory systems are equipped to keep our food safe?

References

1. https://www.who.int/activities/estimating-the-burden-of-foodborne-diseases
2. https://www.who.int/data/gho/data/themes/who-estimates-of-the-global-burden-of-foodborne-diseases
3. https://pmc.ncbi.nlm.nih.gov/articles/PMC4668832/
4. https://www.fda.gov/food/food-ingredients-packaging/food-chemical-safety
5. https://www.meatpoultry.com/articles/31364-2025-food-safety-focus
6. https://safefoodalliance.com/food-safety/food-safety-in-2025-the-five-stories-that-shaped-the-industry/
7. https://www.ncbi.nlm.nih.gov/books/NBK216714/
8. https://www.fda.gov/food/hazard-analysis-critical-control-point-haccp/haccp-principles-application-guidelines
9. https://www.fao.org/good-hygiene-practices-haccp-toolbox/haccp/introduction-to-haccp/en
10. https://www.foodprocessing.com/food-safety/regulatory-compliance/article/55259791/pressing-food-safety-and-regulatory-issues-for-2025
11. https://www.who.int/data/gho/data/themes/food-safety
12. https://www.food-safety.com/articles/11003-top-ten-food-safety-scientific-studies-of-2025
13. https://www.cremeglobal.com/the-12-evolving-global-factors-affecting-food-safety/