Arsenic in food is a real public health issue, not an internet scare. In 2026, the World Health Organization estimated that chemical hazards caused 73% of deaths linked to unsafe food, and inorganic arsenic alone accounted for 42% of those chemical deaths.
This guide explains why is arsenic in food, how it gets there, and is arsenic in food dangerous for your heart and your cancer risk. You will learn which foods carry the most exposure, why rice and certain seafood need extra care, and what simple kitchen habits can lower your intake.
We also answer common questions like why do they put arsenic in food and what is arsenic in food in plain language. Every key fact is tied to trusted public health sources, so you can make calm, practical choices for yourself and your family. This article is for education only and is not medical advice. If you are pregnant, feeding an infant, or managing a health condition, talk with a qualified clinician.
What Is Arsenic in Food?
Let us start with the basics, because many people ask what is arsenic in food before anything else. Arsenic is a naturally occurring element found in rock, soil, and water. It is not something that only appears from factories.
Arsenic in food comes in two main families. Organic arsenic compounds are generally considered much less harmful. Inorganic arsenic is the more toxic form, and it is the one public health agencies worry about most.
This difference matters a lot. When someone says arsenic in food is dangerous, they usually mean inorganic arsenic. When someone says it is mostly harmless, they are often thinking about the organic forms found in fish and shellfish.
Both statements can be true at the same time. That is why a blanket “arsenic is bad” or “arsenic is fine” message never tells the full story.
Organic vs. Inorganic Arsenic
Organic arsenic compounds, such as arsenobetaine in fish, pass through the body fairly quickly. Most of it leaves in urine without causing known harm at typical intake levels. This is one reason seafood is treated differently in safety advice.
Inorganic arsenic in food behaves differently. It is classified by the International Agency for Research on Cancer as a Group 1 carcinogen, which means there is enough evidence that it causes cancer in humans. Long-term exposure also affects the heart and blood vessels.
So when you read about arsenic in food and health risks, check which form the article means. Good sources always say.
Where You Meet It Every Day
You meet arsenic through three main routes: food, drinking water, and, in some workplaces, dust or fumes. For most people, food and water are the big two. Cooking with contaminated water can also raise the arsenic level of the finished meal.
Foods that can contain measurable levels include rice and rice products, some fruit juices, certain seaweeds, and some grains and vegetables grown in affected soil. Drinking water from private wells in affected regions is another major source. Public health agencies track all of these routes together.
You do not need to panic about any single food. You do need to understand the pattern of your whole diet. We will get to that shortly.
Why Is Arsenic in Food?
Next comes the question people type into search engines more than any other: why is arsenic in food. The honest answer is that arsenic is part of the planet. It is released naturally from rocks and volcanic activity, and it dissolves into groundwater.
Plants and animals take up what is in their soil and water, which is how arsenic in food begins. So when the ground contains arsenic, the crops grown there can contain it too. Nobody has to add it for it to show up.
People have also added to the problem. Mining, smelting, and burning coal release arsenic into the environment. Older pesticides and wood preservatives left arsenic in some soils for decades.
Natural Sources in Soil and Groundwater
Groundwater is the biggest natural pathway. In some parts of the world, including large areas of South and Southeast Asia, groundwater passes through arsenic-rich sediments and picks up high levels. Millions of people rely on that water for drinking and irrigation.
When farmers irrigate crops with this water, the arsenic moves into the soil and then into the plants. This is a key reason why arsenic in food is a bigger concern in some regions than others. It is also why the issue is tied so closely to water safety.
The World Health Organization sets a guideline value of 10 micrograms per liter for arsenic in drinking water. Many countries use the same number as their legal limit. Private wells are often not tested unless the owner does it.
Human Activity and Old Pesticides
Industrial activity adds to the natural background. Mining and metal smelting can release arsenic into air, soil, and rivers. Over time, rain and runoff carry it into farmland.
Arsenic-based pesticides were widely used in the past, especially on cotton and fruit orchards. Many were banned decades ago, but arsenic does not break down. It stays in the soil, and some crops can still pick it up.
That long memory is one reason regulators keep monitoring the food supply. It is also why you will see arsenic testing in programs for infant foods and juices.
Why Rice Is Special
Rice deserves its own mention because it takes up arsenic more readily than most other crops, so arsenic in food is often a rice story. Rice is usually grown in flooded paddies. In those waterlogged conditions, arsenic in the soil becomes easier for the plant to absorb.
The grain stores more of it than wheat or barley do. This is a plant biology fact, not a processing mistake. It means arsenic in food often shows up in rice and rice-based products first.
We will return to rice in detail, because it is the single most useful topic for lowering your intake.
Why Do They Put Arsenic in Food?
Some readers search why do they put arsenic in food, and the phrase suggests someone is adding it on purpose. In today’s food supply, that is not the case. Arsenic is a contaminant, not an ingredient.
There is a real history behind the question, though. For many years, certain arsenic-containing compounds were approved for use in poultry feed to control parasites and promote growth. Public concern and testing led manufacturers to stop selling them in the United States, and the last remaining approvals were later withdrawn.
Today, regulators treat arsenic as something to keep as low as reasonably achievable. The goal is not to add it, but to reduce how much gets in through soil, water, and farming practices.
What Regulators Actually Do
Food safety agencies do not ban every food that contains a trace of arsenic. That would remove staples like rice from the market. Instead, they set limits and monitor products where risk is higher.
In the United States, the Food and Drug Administration has set action levels for inorganic arsenic in infant rice cereal and in apple juice. It also runs a program called Closer to Zero, which aims to lower exposure to heavy metals in foods for babies and young children. Other countries and the Codex Alimentarius, the international food standards body, set their own limits for rice and other foods.
You can read the agency’s overview of where arsenic comes from and what it monitors on the overview of where arsenic comes from and what regulators monitor. It is plain, current, and written for the public.
What the 2026 WHO Estimates Say About Arsenic in Food
In June 2026, the World Health Organization released new global estimates of the harm caused by unsafe food. The numbers are large. Unsafe food was linked to about 866 million illnesses and 1.5 million deaths in 2021.
Most of those illnesses came from biological hazards like bacteria, viruses, and parasites. But the deaths tell a different story. Chemical hazards were responsible for 73% of deaths linked to contaminated food that year.
Within that chemical share, inorganic arsenic accounted for about 42% and lead for about 31%. Together, these two metals were tied to more than one million deaths in a single year. The main reason is that long-term exposure raises the risk of heart disease and cancer.
You can read the full global burden estimates in the full global burden estimates for foodborne disease. The analysis covered 42 hazards across 194 countries from 2000 through 2021.
What These Numbers Mean for You
These are global figures, and they should be read that way. They do not mean that a typical meal in your kitchen is a health emergency. The heaviest burden falls on Africa and Southeast Asia, which together account for nearly three-quarters of foodborne illnesses and about 60% of deaths.
Children also carry a heavier load. Children under five face nearly three times the risk of illness from unsafe food compared with older children and adults. Their bodies are small, they eat more food per kilogram of body weight, and their organs are still developing.
So the right takeaway is balanced. The report shows that arsenic in food is a serious, well-documented hazard at the population level. It also shows that many of these harms can be prevented with cleaner water, safer farming, and better regulation.
Is Arsenic in Food Dangerous?
Now for the question at the center of everything: is arsenic in food dangerous? The most accurate answer is “it depends on the dose, the form, and the duration.” A tiny, occasional exposure to organic arsenic from fish is very different from years of drinking high-arsenic well water.
Toxicologists use a simple idea for arsenic in food: the dose makes the poison. At very high doses, arsenic causes acute poisoning with vomiting, abdominal pain, and severe illness. That is rare and almost never comes from normal food.
The real public health concern is chronic, low-to-moderate exposure over many years. This is where arsenic in food and water add up. And this is where the links to heart disease and cancer come from.
Why Children and Pregnancy Need Extra Care
Early life is a sensitive window. Studies have linked higher early-life arsenic exposure with effects on growth and brain development, though research is still evolving and results vary by study. That is why agencies focus so much on infant foods.
During pregnancy, arsenic can cross the placenta. This is one reason clinicians often advise pregnant people to eat a varied diet and to use safe drinking water. If you are pregnant, ask your doctor or midwife about your specific situation.
Parents of babies should also pay attention to rice cereal and rice-based snacks. We cover practical swaps later in this guide.
How Arsenic in Food Is Linked to Heart Disease
The WHO figures point to cardiovascular disease (CVD) as one of the main ways arsenic harms people. This is not a new idea. Researchers have studied it for decades in places with high arsenic in drinking water.
In those studies, long-term exposure was associated with higher rates of high blood pressure, coronary heart disease, stroke, and poor circulation in the legs. The link is strongest at high exposure levels. Evidence at lower levels is still being studied.
Because heart disease is already the leading cause of death worldwide, even a small added risk matters at the population level. That is why arsenic in food is treated as a public health priority and not just a lab curiosity.
How Might Arsenic Affect the Heart?
Scientists have proposed several pathways. Arsenic appears to cause oxidative stress, which is a kind of cellular wear and tear. It may also inflame and stiffen blood vessels, and it may disturb how the heart conducts electrical signals.
These mechanisms are still being researched, so it is best to treat them as leading explanations and not final answers. What is well supported is the overall association between long-term exposure and cardiovascular outcomes. That is the part WHO relied on in its estimates.
If you already have heart disease or high blood pressure, you do not need to change your treatment because of this article. You can, however, take simple steps to lower your exposure, which we list below.
How Arsenic in Food Is Linked to Cancer
Cancer is the second major concern with arsenic in food. Inorganic arsenic is a recognized human carcinogen. The strongest evidence links long-term exposure to cancers of the skin, lung, and bladder.
Much of this evidence comes from populations drinking water with high arsenic levels for many years. Researchers have also examined other cancer sites, and some results are less consistent. That is normal for a field with long latency periods.
The WHO analysis included cancer as a key reason why inorganic arsenic accounts for such a large share of chemical-related deaths from food. The cancer risk comes from cumulative exposure over a lifetime. It is not a one-meal problem.
Rice and Arsenic in Food: What to Know
Rice is the most important food to understand if you want to reduce arsenic in food. It is a staple for billions of people, and it takes up more arsenic than other grains. In many diets, rice and rice products are among the largest food sources of inorganic arsenic.
That does not mean you should stop eating rice. Rice provides energy, and for many families it is central to culture and daily life. The aim is to eat it smartly, not to fear it.
Three things drive how much arsenic ends up in your bowl: the type of rice, where it was grown, and how you cook it. You can influence two of those three.
White Rice vs. Brown Rice
Arsenic tends to collect in the outer layers of the grain, in the bran. Brown rice keeps the bran, so it often contains more inorganic arsenic than white rice of the same type. White rice has the bran milled away, so it usually has less.
This creates a real trade-off. Brown rice has more fiber and some minerals, but it can carry more arsenic. White rice is lower in arsenic but less nutritious.
The sensible middle path is variety. Rotate rice with other whole grains, and do not rely on brown rice as your only grain every day.
Origin and Rice Type Matter
Studies and consumer testing have reported that arsenic levels differ by growing region and rice variety. Some reports have found lower levels in certain basmati and jasmine rices, and in rice grown in some regions. Results vary by year and by testing program, so treat these as general patterns and not guarantees.
If you buy rice regularly, it helps to rotate brands and origins. This spreads your exposure rather than concentrating it. Variety is a safety strategy as well as a culinary one.
Cooking Methods That May Help
How you cook rice can change how much arsenic remains. Laboratory studies suggest that cooking rice in a large amount of water, like pasta, and draining the extra water can remove a meaningful share of arsenic. Some research found that more water and a rinse before cooking can lower levels, although the exact reduction varies by method and rice type.
There is a trade-off. Cooking in lots of water and draining it can also wash away some nutrients, such as certain B vitamins and minerals. If the rice is enriched, some of the added nutrients may be lost.
A simple approach many people use is to rinse the rice, then cook it with extra water and drain the surplus. Pair it with vegetables, beans, or fish to rebuild the nutrition. If you want details, the FDA publishes guidance on rice and rice products.
Rice Products and Baby Foods
Rice is also an ingredient in many packaged foods. Examples include rice cereal, rice cakes, crackers, rice milk, and rice syrup. Some of these can contain notable levels of inorganic arsenic.
Infants are the group of greatest concern. Agencies suggest that parents offer a mix of grains such as oats, barley, and multigrain cereals instead of relying only on rice cereal. Rice milk is generally not recommended as a main drink for young children.
If you feed a baby, ask your pediatrician about safe choices. Never remove an infant’s key foods without medical advice, because nutrition during early growth is essential.
Seafood, Seaweed, and Arsenic in Food
Seafood is where the story of arsenic in food gets interesting. Fish and shellfish often show the highest total arsenic numbers in food tests. Yet that does not mean they carry the highest risk.
The reason is the form. Most of the arsenic in finfish and shellfish is in organic forms that the body handles much more easily. These forms are considered far less toxic than inorganic arsenic.
So when you see a headline claiming that fish is “full of arsenic,” ask which form the test measured. Many early reports mixed everything together, which made seafood look worse than it is.
Fish and Shellfish: Mostly Organic Arsenic
For most people, the nutritional benefits of fish are significant. Fish provide high-quality protein, iodine, and omega-3 fats. For that reason, health agencies generally encourage regular fish intake as part of a balanced diet.
The bigger concern with some fish is not arsenic but methylmercury. In the United States, the FDA and EPA advise choosing lower-mercury fish and eating about two to three servings a week, with specific advice for pregnancy and young children. Following that guidance also keeps you on safe ground for most arsenic questions.
If you eat a lot of seafood every day, it is reasonable to vary the species. Mix fish, shellfish, and other protein foods across the week.
Seaweed: Where Caution Is Needed
Seaweed is a different case. Some types, especially hijiki, can contain high levels of inorganic arsenic. Food safety agencies in several countries, including the United Kingdom, advise people not to eat hijiki.
Other seaweeds, such as nori, kelp, and wakame, generally contain less inorganic arsenic, but levels can still vary. Eating them occasionally is usually fine. Eating large amounts every day is not a good idea, and kelp supplements deserve extra caution.
If you enjoy sushi or seaweed salads, enjoy them in moderation and skip hijiki. That one habit removes the highest-risk seaweed from your plate.
Other Foods and Drinks That Can Contain Arsenic
Rice and seaweed are not the only sources of arsenic in food. Researchers have measured arsenic in many foods, usually at low levels. It is helpful to know the main categories so that nothing surprises you.
Remember that the amount in a single serving of any one of these is usually small. It is the pattern over years that counts. A varied diet naturally dilutes risk.
Here are the groups most often mentioned in food safety reports.
Juices, Grains, and Vegetables
Some fruit juices, especially apple and grape juice, have had measurable inorganic arsenic in monitoring programs. Regulators now watch these closely, and action levels exist in the United States. Whole fruit is a simple way to cut back, and it adds fiber.
Wheat, oats, and other grains generally contain much less arsenic than rice. Root vegetables and leafy greens can take up arsenic from soil, depending on where they were grown. Washing and peeling can help with soil residue.
None of this is a reason to avoid vegetables. Vegetables provide fiber and protective nutrients that lower the risk of many diseases. The benefit far outweighs the small arsenic risk.
Drinking Water and Cooking Water
For many people, water is the single biggest controllable source. If your home uses a private well, testing is the most important step you can take. Municipal water in many countries is regulated, but not in every place.
If your water has high arsenic, filters such as reverse osmosis or activated alumina systems can reduce it when properly certified and maintained. Boiling does not remove arsenic, and it can actually concentrate it as water evaporates. Check with your local health authority for approved testing labs and treatment options.
Remember that cooking water counts. Rice cooked in high-arsenic water can absorb even more arsenic. Safe water protects your drinking and your cooking at once.
Practical Ways to Reduce Arsenic in Food
Now for the part most readers want: how do you lower arsenic in food? The good news is that the best steps are simple, cheap, and compatible with a healthy diet. You do not need special products.
Think of lowering arsenic in food as a few habits, not a project. Pick two or three that fit your life. Repeat them for months and years, because that is when exposure really drops.
Here is a practical checklist.
A Simple Action Plan
- Vary your grains. Rotate rice with oats, barley, millet, quinoa, wheat, and other grains throughout the week.
- Cook rice in extra water. Use a large pot, drain the surplus, and rinse before cooking if you like.
- Mix white and brown rice. Do not rely on brown rice alone every day.
- Be careful with rice products. Limit rice cakes, rice crackers, and rice drinks, especially for children.
- Skip hijiki. Keep other seaweeds to modest amounts.
- Test private well water. Ask your local health department which lab to use.
- Eat whole fruit more often than juice, especially for kids.
- Eat a balanced diet with enough protein, fruits, and vegetables. Good overall nutrition supports your body’s ability to handle trace contaminants.
For the numbers behind these tips, see this fact sheet on arsenic intake and exposure. None of these steps requires you to give up cultural foods or staples. They simply spread out your exposure and cut the highest-risk habits. Small changes, repeated daily, are what counts.
Who Should Be Most Careful About Arsenic in Food?
Everyone can benefit from simple habits that cut arsenic in food. Some groups, however, deserve extra attention. These are the people for whom the same exposure may carry more risk.
Think of it as turning up the care dial, not turning on the alarm. A few small changes go a long way for these groups.
If you belong to one of these groups, speak with a healthcare provider for personal guidance.
Infants and Young Children
Children eat more food relative to their size, so arsenic in food weighs more on them, and their bodies are still developing. That makes the same amount of arsenic more significant for them. Infant rice cereal and rice snacks are the most discussed sources.
Offer a variety of grains and age-appropriate foods. Avoid using rice milk as a main drink. Follow your pediatrician’s advice on starting solid foods.
Pregnant and Breastfeeding People
Pregnancy is a time to be thoughtful about water and variety. Safe drinking water is the foundation. A balanced diet, with moderate rice and low-mercury fish, supports both parent and baby.
Do not cut out key nutrients because of arsenic worries. Instead, talk with your doctor or midwife about a plan that is safe for you.
People Who Eat Rice Every Day
If rice is the center of most of your meals, your exposure may be higher than average. This is common in many parts of the world. The solution is not to quit rice, but to cook it smartly and add other grains.
Try swapping a few meals a week for other staples. Add beans, lentils, and vegetables to every plate. These small changes lower arsenic exposure while improving nutrition.
People on Private Wells
Private wells are often unregulated and untested, and well water feeds arsenic in food through cooking. The owner is responsible for testing. If you drink from a well, test it at least once, and repeat the test if conditions change.
Use a certified laboratory for the test. If arsenic is high, switch to a safe water source for drinking and cooking until it is fixed.
Why Searches for Arsenic in Food Are Rising
Interest in arsenic in food has grown since the WHO released its 2026 estimates. News coverage, parent groups, and health influencers have all brought attention to heavy metals in food. People want clear answers, and that is a good sign.
You can follow the interest over time on the search trend chart for this topic. It shows how public curiosity rises after big reports.
With more attention comes more misinformation. That is why it matters to rely on official sources and to read past the headline. Informed, calm action beats fear every time.
Frequently Asked Questions
Is Arsenic in Food Really a Big Deal?
At the global level, yes. The WHO estimates link inorganic arsenic to a large share of chemical-related food deaths. At the personal level, the risk depends on your diet, water, and life stage, and simple habits can reduce it.
Is Arsenic in Food Worse in Rice Than in Other Foods?
Rice is a leading source of arsenic in food because of how it is grown. Other grains usually contain less. That is why rotating grains is such a useful habit.
Is Fish High in the Most Harmful Form of Arsenic?
No, not usually. Most arsenic in finfish and shellfish is organic and far less toxic. The main fish-related concern is mercury, which is why varied choices and official advice matter.
Should I Stop Eating Rice?
For most people, no. Rice is a safe and valuable staple when eaten as part of a varied diet. Cook it in extra water, rotate grains, and take extra care with babies.
When Should I See a Doctor?
See a clinician if you have symptoms such as unexplained skin changes, persistent stomach problems, or if you know you have been exposed to high-arsenic water for a long time. A doctor can arrange testing and advise next steps. Seek urgent care for sudden severe symptoms after a possible poisoning.
The Bottom Line on Arsenic in Food
Arsenic in food is real, measurable, and linked to long-term risks such as heart disease and cancer. The 2026 WHO estimates show that inorganic arsenic is a major driver of chemical-related deaths from unsafe food. At the same time, the risk for any one person depends on dose, form, and duration.
The most useful steps are practical. Vary your grains, cook rice in extra water, skip hijiki, treat rice products for babies with care, and test private well water. Do not chase detox products, and do not drop whole food groups out of fear.
You are not powerless here. Small, steady habits lower your exposure over a lifetime. Keep following trusted public health sources, and share what you learn with your family.
