When choosing what to eat, most people think about calories, sugar, protein, and fat. But food safety is just as important.
Certain foods can carry parasites or other harmful microorganisms when they are eaten raw, undercooked, contaminated, or handled improperly. The good news is that this does not mean you need to eliminate these foods from your diet.
In many cases, proper cooking, safe handling, and buying food from reliable sources can dramatically reduce the risk.
Here are four foods that deserve particular attention.
1. Raw Fish and Sashimi
Raw fish is one of the foods that requires careful preparation.
Certain species of fish can carry parasites that may infect people when the fish is eaten raw or insufficiently cooked. One example is Anisakis, a parasitic worm associated with some marine fish.
This is one reason commercial establishments that serve raw fish must follow appropriate food-safety procedures.
If you enjoy sashimi or other raw-fish dishes, choose reputable restaurants and suppliers that follow established food-safety standards.
Proper freezing procedures can also be used to destroy certain parasites in fish intended to be eaten raw, although freezing does not eliminate every possible food-safety hazard.
When preparing fish at home, follow recognized food-safety guidance rather than relying on appearance or smell to determine whether it is safe.
2. Frog Meat
Frog meat is eaten in several countries and can be a nutritious source of protein.
However, raw or undercooked frog meat can carry parasites and other microorganisms.
Some parasitic infections associated with frogs can cause serious illness, particularly when contaminated meat is consumed without adequate cooking.
The safest approach is simple: purchase frog meat from a reliable source and cook it thoroughly.
Avoid dishes in which frog meat remains raw or visibly undercooked.
Good kitchen hygiene is also important. Wash your hands after handling raw meat and prevent raw ingredients from coming into contact with ready-to-eat foods.
3. Snails
Snails are another food that requires careful preparation.
Some land snails and freshwater snails can carry parasites capable of infecting humans. The risk depends on the species, environment, and preparation method.
Eating raw or inadequately cooked snails can therefore be dangerous.
Simply warming snails briefly may not provide sufficient protection.
If you eat snails, make sure they come from a trustworthy food source and are thoroughly cleaned and cooked according to appropriate food-safety practices.
People should be particularly cautious about eating wild snails because their health and contamination status may be unknown.
4. Raw Water Chestnuts
Water chestnuts may appear completely harmless, but raw aquatic plants can sometimes become contaminated with parasites depending on where and how they were grown.
One example is the water chestnut plant, which can be associated with certain foodborne parasites in areas where those infections occur.
For this reason, eating raw aquatic plants from questionable sources can present unnecessary risks.
Proper cleaning, peeling, and cooking can help reduce contamination.
When possible, purchase water chestnuts from reputable food suppliers and follow the preparation instructions appropriate for the product.
What About Undercooked Meat?
The same principle applies to meat.
Beef, pork, poultry, and other animal products can contain parasites or harmful bacteria if they are not handled and cooked safely.
Although some people prefer meat cooked rare or medium-rare, the risk of foodborne illness depends on the type of meat, its contamination, and how it was processed and cooked.
Ground meat deserves particular attention because contamination on the surface can become distributed throughout the product.
Following recommended cooking temperatures is one of the most reliable ways to reduce the risk.
Parasites Aren’t Always Visible
One of the biggest misconceptions about contaminated food is that you can simply look at it and know whether it is safe.
Parasites and microorganisms may be impossible to see with the naked eye.
Food can look, smell, and taste normal while still carrying harmful organisms.
That is why food-safety practices are more reliable than appearance.
How to Reduce Your Risk
You don't have to live in fear of foodborne parasites.
A few simple habits can make a major difference.
Buy From Reliable Sources
Purchase meat, seafood, and other potentially risky foods from reputable stores, markets, restaurants, and suppliers.
Avoid products that have been stored improperly or whose source is unclear.
Cook Food Thoroughly
Cooking is one of the most effective ways to destroy many parasites and harmful microorganisms.
Follow appropriate cooking recommendations for the specific food rather than judging doneness by color alone.
Keep Raw and Cooked Foods Separate
Cross-contamination can occur when juices from raw meat or seafood come into contact with cooked food.
Use clean utensils, cutting boards, and plates for ready-to-eat foods.
Wash Your Hands
Wash your hands thoroughly with soap and water before preparing food and after handling raw meat, seafood, or other potentially contaminated ingredients.
Clean Kitchen Surfaces
Countertops, knives, cutting boards, and other kitchen equipment should be cleaned properly after contact with raw foods.
Be Careful With Wild Foods
Wild animals, plants, snails, and other foods collected directly from nature may carry risks that are difficult to identify.
Unless you know that a wild food is safe and how it should be prepared, it is better not to consume it.
What Symptoms Can Parasites Cause?
Parasitic infections can vary considerably depending on the organism involved.
Possible symptoms may include:
Abdominal pain
Diarrhea
Nausea
Vomiting
Loss of appetite
Fatigue
Unexplained weight loss
Fever in some infections
Some infections can cause more serious complications.
However, these symptoms can also be caused by many other illnesses, so they do not automatically mean that someone has a parasitic infection.
If persistent or severe symptoms develop after eating potentially contaminated food, medical advice is appropriate.
The Real Lesson Isn't to Stop Eating These Foods
Headlines claiming that people should “stop eating” certain foods can make food safety sound more frightening than it needs to be.
The real issue is how the food is sourced, handled, prepared, and cooked.
Raw fish from a properly regulated source is not equivalent to randomly caught fish eaten without appropriate preparation.
Commercially prepared food is not necessarily the same as food handled carelessly at home.
And thoroughly cooked food is generally much safer than the same food eaten raw or undercooked.
Final Thoughts
Raw fish, frog meat, snails, and raw aquatic plants can present parasite-related risks under certain circumstances. Undercooked meat can also expose people to parasites and other foodborne pathogens.
But there is no need for most people to panic or completely eliminate these foods.
The better approach is to understand the risks and use sensible food-safety practices.
Choose reliable sources, maintain good kitchen hygiene, prevent cross-contamination, and cook potentially risky foods thoroughly.
A few simple precautions can allow you to enjoy a wide variety of foods while greatly reducing the chance of preventable foodborne infections.
Food safety isn't about being afraid of what you eat. It's about knowing how to prepare it safely.
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