Why No Preservatives Matters: What Food Additives Actually Do to Your Body

The next time you pick up a packaged snack, a bottle of juice, or a processed food from a supermarket shelf, look at the ingredients list. Somewhere in that list, usually toward the end, you will find names like sodium benzoate, BHA, BHT, sodium nitrite, or potassium sorbate. They are there to keep the food from spoiling. And most people read past them without stopping.

But these are chemicals that go into your body every time you eat that food. And the research on what happens when they accumulate in the body over time is worth knowing.

This blog gives you a clear, honest, science-based answer to three questions. What are food preservatives and why are they used? What does the current evidence say about their effects on health? And what does it actually mean when a food says it contains no artificial preservatives?

No scare tactics. No exaggeration. Just what the science actually says, stated plainly.

What Are Food Preservatives and Why Are They Added?

Food preservatives are substances added to food to slow or prevent spoilage. They serve a genuinely useful purpose. Without any form of preservation, most food would spoil within days. Bacteria, mold, and yeast would grow. Fats would turn rancid. Fruits and vegetables would brown and break down. Pathogens like listeria and botulism, which can cause serious illness, would multiply in poorly preserved food.

Preservation has been part of human food culture for thousands of years. Salt, honey, vinegar, smoking, drying, and fermentation are all traditional methods that humans have used for centuries to keep food safe without synthetic chemicals. These methods work by removing moisture, lowering pH, or creating conditions where harmful microbes cannot grow.

Modern food production introduced a different category: synthetic chemical preservatives. These are manufactured in laboratories and added to food in small quantities to extend shelf life far beyond what traditional methods could achieve. They allow food to be transported across long distances, stored on shelves for months or years, and sold at scale.

The two most commonly used types are antimicrobial preservatives, which slow the growth of bacteria, mold, and yeast, and antioxidant preservatives, which prevent fats and oils from going rancid by slowing oxidation.

The important nuance: Most approved food preservatives are regulated and considered safe at the levels at which they are used. Regulatory agencies including the WHO, the US FDA, and the European Food Safety Authority set maximum permitted amounts for all approved additives based on safety studies. The concern is not one serving of preserved food. The concern is what accumulates over years of regular consumption, across multiple products consumed daily.

The Most Common Chemical Preservatives and What Research Says About Them

Not all preservatives carry the same level of concern. Here is a clear look at the most commonly used ones and what current evidence says.

Sodium Benzoate

Sodium benzoate is used widely in soft drinks, fruit juices, sauces, pickles, and processed condiments. It works by inhibiting the growth of bacteria and fungi in acidic foods.

The main concern with sodium benzoate is that under certain conditions, specifically when it is combined with vitamin C (ascorbic acid) and exposed to heat or light, it can form benzene. Benzene is a known carcinogen. Many food manufacturers have reformulated products to reduce this risk, but the reaction is still possible in products that contain both sodium benzoate and vitamin C.

Research also links sodium benzoate to potential behavioral effects in children. A landmark randomised controlled trial found an association between sodium benzoate combined with artificial food dyes and increased hyperactivity in children. Multiple subsequent studies have found similar associations. In addition, recent research published in 2025 and 2026 in peer-reviewed journals has found that sodium benzoate, along with other antimicrobial preservatives, can alter the composition of the gut microbiome, reducing beneficial bacteria and increasing strains associated with inflammation.

BHA (Butylated Hydroxyanisole) and BHT (Butylated Hydroxytoluene)

BHA and BHT are synthetic antioxidants used in cereals, crackers, chips, baked goods, and packaged snacks to prevent fats and oils from going rancid. They are listed on ingredient labels by name.

BHA has been identified as a possible human carcinogen based on animal studies. In 2026, the US Food and Drug Administration issued a Request for Information on the safety of BHA as part of its post-market food chemical assessment program. BHT animal studies have shown that high doses may increase cancer risk, cause liver enlargement, and disrupt hormones. Both BHA and BHT have been found to have hormone-modulating activity, influencing thyroid and reproductive hormones in animal research.

West Virginia in the United States passed legislation in March 2025 prohibiting BHA in foods sold in the state, effective January 2028. While regulatory bodies in most countries still permit these additives at defined levels, the level of scientific scrutiny on both has increased significantly in recent years.

Sodium Nitrite and Sodium Nitrate

Sodium nitrite and sodium nitrate are used in processed meats including bacon, hot dogs, sausages, and deli meats. They prevent bacterial growth, fix color, develop characteristic cured meat flavor, and extend shelf life significantly.

When nitrites enter the body, they can react with compounds in the digestive system to form nitrosamines. Nitrosamines are carcinogenic. This is part of the basis for the International Agency for Research on Cancer (IARC), which is part of the WHO, classifying processed meats as Group 1 carcinogens, meaning there is sufficient evidence they cause cancer in humans, specifically colorectal cancer. The French Agency for Food, Environmental, and Occupational Health and Safety has recommended limiting processed meat consumption to no more than 150 grams per week due to this risk.

There is also emerging evidence linking nitrite consumption to increased risk of type 2 diabetes, though research in this area is still developing.

Potassium Sorbate

Potassium sorbate is used in cheese, wine, dried fruits, and many packaged food products. It is generally considered one of the safer synthetic preservatives. However, research published in 2025 and 2026 identified it, along with sodium benzoate and sodium nitrite, as one of the preservatives that can alter gut microbiome composition. Animal studies found that these preservatives together increased the abundance of Proteobacteria, a bacterial group associated with inflammation and gut-related health problems, while decreasing beneficial Clostridiales bacteria.

Sulfites

Sulfites are used in dried fruits, wine, shrimp, and some processed foods. They are effective antimicrobials but are known allergens for sensitive individuals. Sulfites can trigger asthma-like symptoms, bronchoconstriction, and allergic reactions in people with sulfite sensitivity, a condition that affects a small but real proportion of the population. Research also indicates that sodium sulfite and sodium bisulfite can inhibit the growth of beneficial Lactobacillus bacteria in the gut.

What Happens to Your Body Over Time

Most of the research on preservative health effects focuses not on a single serving but on regular, ongoing exposure across multiple food products over months and years. This is the realistic picture of how most people actually consume preserved food.

Gut Microbiome Disruption

One of the most consistent findings in recent research is the effect of antimicrobial preservatives on the gut microbiome. The gut contains trillions of bacteria that play a critical role in digestion, immune function, mental health, and metabolism. Preservatives like sodium benzoate, potassium sorbate, and sodium nitrite are designed to kill microbes in food. Research now indicates they can have a similar effect on the microbes in the gut.

A study published in a peer-reviewed journal in 2025 found that common preservatives reduced beneficial bacterial populations in the gut and created an imbalance that was associated with increased gut inflammation. Research from the University of Chicago found that lantibiotics, a class of antimicrobial preservatives used in the food industry, affect both harmful and beneficial bacteria in the gut. The concern is that preservatives designed to kill microbes in food packaging continue to do the same thing inside the digestive system.

Children and Developing Systems

Children are more vulnerable to the effects of food additives than adults. This is because their digestive systems, immune systems, livers, and brains are still developing. The cytochrome P450 enzyme system in the liver, which processes and detoxifies foreign substances including food chemicals, is not fully developed until adolescence.

The research on hyperactivity and sodium benzoate in children is among the most consistent in this field. Multiple studies over more than a decade have found associations between regular consumption of sodium benzoate (particularly combined with artificial food dyes) and increased hyperactivity, distractibility, and ADHD-like symptoms in children. This is one reason why consumer awareness and product reformulation around sodium benzoate has increased significantly in recent years.

Cancer Risk Over Time

The cancer risk from individual preservatives at regulated levels is generally small. The concern is cumulative exposure across many products over many years, combined with the conversion of certain preservatives into more dangerous compounds during digestion.

Sodium nitrite converting to nitrosamines in the gut is the clearest example of this mechanism. The IARC classification of processed meats as Group 1 carcinogens is based on the same pathway. BHA's potential carcinogenicity is based primarily on animal studies, which is why regulators have begun reviewing it more actively rather than considering the matter settled.

Hormonal Effects

BHA and BHT have been found to have hormone-modulating activity in research. They can influence thyroid hormone function and reproductive hormone levels. Parabens, another class of preservatives used in some packaged foods, show estrogenic activity and have been studied for potential effects on early puberty in girls. The endocrine system, which regulates hormones, is particularly sensitive to chemical disruption at even low concentrations over time.

The Important Balance: Preservatives Also Protect You

A balanced picture of food preservatives has to include what they prevent, not just what they may cause.

Without preservatives of any kind, food spoilage would be a serious public health problem. Botulism, listeria, salmonella, and other foodborne pathogens cause significant illness and death globally. Preservatives in cured meats specifically exist in large part to prevent botulism, which is caused by Clostridium botulinum, one of the most lethal toxins known.

Preservatives also reduce food waste, make food affordable, and allow it to reach communities where fresh produce is not reliably available. These are real and important benefits.

The question is not whether to use any preservation at all. The question is which methods of preservation carry the least risk and the most benefit. This is where the difference between synthetic chemical preservatives and physical preservation methods like drying becomes relevant.

How Drying Works as a Natural Preservation Method

Drying is one of the oldest and safest methods of food preservation. It works by removing moisture from food. Bacteria, mold, and yeast require moisture to grow. When moisture is removed below a critical level, microbial growth is effectively halted and the food becomes shelf-stable without requiring chemical additives.

Properly dried food does not need chemical antimicrobials. It does not need antioxidant additives. The physical removal of water does the preservation work that synthetic chemicals would otherwise do. This is why dried fruits, dried fish, dried beans, dried herbs, and dried grains have been safe foods for thousands of years without any added chemicals.

Modern food dehydration techniques including air drying, sun drying, and freeze-drying can achieve moisture levels low enough to keep food safe for extended periods without adding preservatives. The trade-off is that dried food requires proper rehydration before eating, and the texture and form of the food changes from its fresh state. But the nutritional value, safety, and clean ingredient profile are preserved.

Why this matters for everyday Nigerian cooking: Dried crayfish, dried fish, dried ugu, and dried pepper are all traditional Nigerian ingredients that have been used for generations as naturally preserved foods. They are shelf-stable, nutritious, and contain no added chemicals. They work exactly on the principle described above: moisture removed, microbial growth prevented, no preservatives needed.

How Addme Products Are Preserved and What That Means for Your Family

Every vegetable in an Addme product is dried. The carrot in Addme Noodlemate is a dried carrot. The sweet corn in Addme Pastamate is dried sweet corn. The vegetable blend in Addme Mealmate is a dried vegetable blend. The principle is the same as dried crayfish or dried fish that Nigerian households have used for decades: remove the moisture and the food is naturally shelf-stable.

This matters because it means the vegetables in Addme products do not require synthetic chemical preservatives to remain safe on the shelf. The drying process does that work. What you see on the ingredient label is what is actually in the pack.

The protein in Noodlemate and Pastamate, specifically the chicken chunks and the crayfish, is processed and dried using methods that allow it to be shelf-stable without chemical additives. This is the same principle that makes kilishi, a Nigerian spiced dried meat, shelf-stable without refrigeration. Physical preservation through moisture removal rather than chemical preservation through additives.

For the Addme Seasoning Powder and the sauce sachets in Pastamate, these are dry blends where the low moisture content and dry packaging environment prevent microbial growth naturally, without the need for antimicrobial chemical preservatives.

This is not a small thing for a family that eats Addme products regularly. It means the meals that come from Addme packs are not introducing the accumulated chemical load that comes from eating multiple preserved food products daily over months and years.

What You Can Do: Practical Steps for Reducing Preservative Exposure

It is not realistic for most Nigerian families to avoid all processed food. But reducing exposure to the most concerning synthetic preservatives is practical and does not require a complete diet overhaul.

- Read ingredient labels. Sodium benzoate, BHA, BHT, sodium nitrite, and potassium sorbate are all listed by name on ingredient lists in Nigeria and internationally. If you see them frequently in products your family eats daily, consider whether there is a comparable product without them.

- Limit processed meat consumption. Deli meats, sausages, bacon, and hot dogs are the primary source of sodium nitrite. The French Agency for Food Safety recommended limiting processed meat to no more than 150 grams per week for this reason.

- Prioritize dried, whole foods when buying preserved ingredients. Dried crayfish, dried fish, dried vegetables, dried beans, and dried grains are naturally preserved without synthetic chemicals. They are also traditional Nigerian ingredients with centuries of safe use.

- Cook more from scratch when time allows. Fresh ingredients do not require preservatives. Building your cooking routine around more fresh ingredients on the nights you have time reduces overall preservative exposure significantly.

- Use products designed around physical preservation rather than chemical preservation for your convenience meals. Products like Addme Noodlemate, Addme Pastamate, Addme Ricemate, and Addme Mealmate use dried ingredients that do not require added synthetic preservatives to stay shelf-stable.

- Be especially mindful for children. Given the evidence on children's vulnerability to food additives, the case for reducing preservative exposure is strongest for the foods they eat most often, particularly drinks, snacks, and packaged convenience foods.

Frequently Asked Questions

Are food preservatives dangerous?

Most food preservatives are permitted by regulatory bodies and are considered safe at the levels used in individual products. The concern is cumulative exposure across many products over a long period, combined with the fact that some preservatives form more dangerous compounds during digestion. Sodium benzoate can form benzene under certain conditions. Sodium nitrite can form carcinogenic nitrosamines in the gut. BHA and BHT have shown potential endocrine-disrupting and carcinogenic effects in animal studies. The evidence is strongest for processed meat consumption and cancer risk, which is why the WHO classifies processed meat as a Group 1 carcinogen.

What does "no artificial preservatives" mean on a food label?

It means no synthetic chemical preservatives were added to the product. The food may still contain natural preservatives like salt, sugar, vinegar, or citric acid, or it may use physical preservation methods like drying, refrigeration, or vacuum packaging. It does not mean the product contains no additives at all. Read the full ingredients list, not just the front label claim.

Are preservatives bad for children specifically?

Children are more vulnerable than adults to the potential effects of food additives because their liver detoxification systems, immune systems, and nervous systems are still developing. The strongest evidence involves sodium benzoate combined with artificial food dyes and its association with increased hyperactivity in children. Multiple studies over more than a decade have found this link. The concern for children is strongest for products they consume frequently and in large quantities, particularly soft drinks, packaged juices, and processed snacks.

What preservatives should I try to avoid?

The preservatives with the most significant evidence for health concerns at typical consumption levels are sodium nitrite and sodium nitrate (found in processed meats), sodium benzoate (found in soft drinks, juices, and condiments), and BHA and BHT (found in cereals and packaged snacks). This does not mean occasional consumption causes immediate harm. It means these are the ones worth looking for and reducing where practical alternatives exist.

Is drying a safe method of food preservation?

Yes. Food drying is one of the oldest and safest preservation methods. It works by removing moisture below the level at which bacteria, mold, and yeast can grow. Properly dried food is shelf-stable without requiring chemical additives. Traditional Nigerian ingredients like dried crayfish, dried fish, dried ugu, kilishi, and dried pepper use this principle. Modern food companies can achieve the same result through mechanical drying and freeze-drying.

How do Addme products stay fresh without chemical preservatives?

Addme products use dried ingredients. The vegetables, protein, and sauce components in Noodlemate, Pastamate, Ricemate, and Mealmate are all dried to low moisture levels that prevent microbial growth naturally. The dry powder seasoning in the sachets is also naturally shelf-stable at low moisture. This physical preservation method eliminates the need for synthetic antimicrobial preservatives. You can confirm this by reading the ingredients on any Addme product.

Does eating dried food mean eating less nutritious food?

Not significantly for most nutrients. Drying does reduce some water-soluble vitamins, particularly vitamin C. However, minerals, fiber, protein, and many other nutrients remain largely intact in properly dried food. The dried vegetables and protein in Addme products retain meaningful nutritional value and rehydrate during cooking to contribute real nutrition to the meal. For the most heat-sensitive vitamins, fresh vegetables remain the optimal source. But dried vegetables are far superior to no vegetables at all, and far preferable to vegetables preserved with synthetic chemicals.

How can I check whether a food product contains preservatives?

Look at the ingredients list on the packaging, not the front label. Preservatives are listed by name in Nigeria and most countries. Common ones to look for include: sodium benzoate, potassium sorbate, sodium nitrite, sodium nitrate, BHA, BHT, calcium propionate, sodium bisulfite, and sulfur dioxide. If these appear in a product your family eats daily, consider whether there is a comparable option without them.

Is all ultra-processed food bad because of preservatives?

Ultra-processed foods are associated with health risks for several reasons, of which preservatives are one part. Other factors include high sugar content, refined carbohydrates, excessive sodium, artificial colorings, and low nutritional density. Preservatives contribute to the overall concern about ultra-processed food but are not the only issue. The whole-diet picture matters more than any single additive.

Where can I buy Addme products that use dried ingredients without synthetic preservatives?

All Addme products are available at shop.addme.ng with free delivery on qualifying orders above NGN 20,000. See the full range at addme.ng/category/addme-products.

Final Thoughts

Food preservatives are not all equally concerning. Some are used safely and effectively. Others have accumulated a body of evidence linking them to health issues that is significant enough to warrant attention, particularly for children and people who eat many processed foods regularly.

The most actionable takeaway is not fear. It is awareness. Reading ingredient labels takes 30 seconds and tells you exactly what is in the food you are buying. Reducing consumption of the specific preservatives with the strongest evidence of concern, particularly sodium benzoate, sodium nitrite, and BHA, is practical and does not require abandoning convenience food entirely.

And when choosing convenience food products for regular use, the method of preservation matters. Drying is a method humans have used safely for thousands of years. It needs no chemicals to work. It leaves the ingredient list clean. It keeps the food safe. And it keeps what is not needed, out of the meal and out of the body.

See Addme Noodlemate, Addme Pastamate, Addme Ricemate, Addme Mealmate, and Addme Seasoning at shop.addme.ng.