You might think that undercooked meat, poultry, or seafood is the main source of food poisoning. Surprisingly, one of the healthiest food groups actually leads the pack in causing foodborne illnesses.
The Unexpected Culprit
Leafy greens, often praised as the ultimate health food, have been identified as the leading cause of food poisoning in the U.S. from 2017 to 2022. According to Consumer Reports, greens like lettuce, spinach, and kale accounted for 614 illnesses and 50 recalls during this timeframe. Contaminants such as E. coli and Listeria are primarily responsible, often originating from contaminated water in the fields or improper handling during processing.
While washing greens is essential, it may not always eliminate the risk. When irrigation water is polluted, particularly near cattle feedlots, bacteria like E. coli can thrive. Additionally, pre-packaged salads can become contaminated during processing, leading to significant outbreaks.
Why Leafy Greens?
It’s puzzling how such a healthy food group can be so harmful. Leafy greens are particularly susceptible to contamination due to their growing and processing methods. Because they are often consumed raw, harmful bacteria like Salmonella and Listeria can easily enter the food chain without being killed through cooking. This elevates their risk for foodborne illnesses compared to many other foods.
Despite their health benefits, leafy greens have been linked to the highest number of deaths from food poisoning, with 11 fatalities reported over the past five years.
Another Unexpected Offender
Fruit, especially melons and pre-packaged fruit salads, is another food group that might surprise you. Cantaloupe and watermelon, for example, have a high risk of contamination from bacteria like Listeria, which can grow on their rough skins and lead to food poisoning. Between 1973 and 2011, 34 outbreaks related to melons were reported in the U.S., resulting in 46 deaths. The rough texture of cantaloupe skins provides a perfect hiding place for bacteria, making them hard to clean effectively.
Frozen and fresh berries, particularly those in pre-packaged salads, also carry risks. They have been associated with outbreaks of hepatitis A and other viruses, mainly due to unsanitary harvesting and processing conditions.
A Starch with Hidden Dangers
Rice is another surprising source of food poisoning. Uncooked rice can contain Bacillus cereus, a bacterium that produces toxins capable of surviving cooking. If cooked rice is left out at room temperature, these spores can multiply, leading to foodborne illnesses. To prevent this, refrigerate rice promptly after cooking and ensure it is reheated thoroughly before eating.
Deli Meats
Although not as surprising as leafy greens or fruit, deli meats still present a notable food safety risk. Ham, salami, and hot dogs can harbor bacteria like Listeria, which thrive in cold environments, making even refrigerated meats potentially hazardous. Sliced meats from deli counters are especially vulnerable to contamination during processing, handling, or storage.
To reduce risks, store deli meats properly in the refrigerator and cook them thoroughly before consumption.
Unpasteurized Dairy
Unpasteurized milk and dairy products are significantly more likely to cause food poisoning compared to their pasteurized versions. Raw milk can harbor harmful bacteria like Campylobacter and Salmonella, leading to severe illness. In fact, unpasteurized milk is at least 150 times more likely to cause foodborne illness than pasteurized products.
To mitigate risk, always choose pasteurized dairy and steer clear of raw milk products.
Risks from the Sea
Fish and shellfish can also lead to food poisoning if not stored or cooked correctly. Histamine, a toxin produced in fish when improperly stored, can result in scombroid poisoning, a common foodborne illness. Shellfish, such as oysters and mussels, are particularly risky due to potential contamination with toxins produced by algae.
Always ensure seafood is stored at the correct temperature and that shellfish are thoroughly cooked.
Reducing Your Risk
While foodborne illnesses are prevalent, there are steps you can take to minimize your risk:
• Always wash your hands before preparing food.
• Rinse fruits and vegetables thoroughly.
• Store food at safe temperatures, especially perishable items like dairy and meat.
• Prevent cross-contamination by using separate cutting boards and utensils for raw meat and vegetables.
By following these guidelines, you can enjoy the foods you love while significantly reducing your risk of food poisoning.