Anisakis worms can infest wild salmon and cause severe illness, but proper cooking or freezing eliminates the risk, experts say
Salmon remains the most popular fish on British menus, featuring in everything from sushi rolls to bagels topped with cream cheese, and often served grilled alongside roasted vegetables.
Beneath its reputation as a lean source of omega‑3 fatty acids, however, lies a hidden danger: the occasional presence of anisakis parasites, tiny worms that can cause a painful and sometimes life‑threatening condition known as anisakiasis. Experts warn that the risk is not uniform across all salmon products. Wild‑caught fish, especially those harvested from the North Atlantic, are far more likely to harbour the parasites because they feed on infected krill, shrimp and smaller fish during their oceanic life.
Studies conducted by the Food Standards Agency in Scotland more than two decades ago found no anisakis larvae in any of the 720 farmed Scottish salmon examined, whereas infection rates exceeded 60 percent in wild Norwegian specimens and approached 100 percent in certain samples of wild Scottish salmon. The parasites typically reside in the muscle tissue after migrating from the gut, waiting to be transmitted to a marine mammal such as a dolphin or whale, where they complete their life cycle.
When humans ingest contaminated fish-particularly when it is served raw, undercooked, or only lightly cured-the worms cannot reproduce but can attach to the stomach or intestinal walls, provoking a range of symptoms that include sudden abdominal pain, nausea, vomiting, diarrhoea, bloating, fever, and in severe cases allergic reactions that may progress to anaphylaxis. Some diners report a tingling sensation in the throat as the worm moves, which can lead to coughing, expulsion, or manual removal of the parasite.
The disease can also manifest as a chronic allergic response, with rashes, itching, and respiratory difficulties that require immediate medical attention. To protect themselves, consumers are advised to follow the Food Standards Agency's recommendations: cook fish to an internal temperature of at least 60 °C for one minute, or freeze it at -20 °C for a minimum of 24 hours (or at -35 °C for 15 hours) before consumption.
These treatments are proven to kill anisakis larvae that might escape visual inspection by food business operators. In addition to traditional salmon dishes, other popular preparations such as sushi, sashimi, ceviche, gravlax, rollmops, marinated anchovies and Spanish escabeche also pose a risk if the fish is not properly processed. While the British salmon industry, valued at roughly £1.5 billion annually, continues to thrive, public health messages emphasise that awareness and proper handling are crucial to prevent anisakiasis.
By choosing farmed salmon, ensuring thorough cooking, or adhering to strict freezing protocols, diners can enjoy the culinary versatility of this beloved fish without compromising their health
Anisakiasis Salmon Safety Foodborne Parasites Cooking Guidelines Wild Fish
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Discover hidden features in Samsung Galaxy Buds 4 ProExplore five hidden features and functionalities in Samsung Galaxy Buds 4 Pro, enhancing their audio and power usage, as well as providing a seamless user experience.
Read more »
Apple TV Plus: A Hidden Treasury of Prestige TelevisionDespite a perceived lack of aggressive marketing, Apple TV Plus has established itself as a leader in quality streaming through acclaimed sci-fi and comedy hits.
Read more »
What Trump’s $1.8 billion payout fund actually does could stay hiddenThe secretive nature of the fund ignited a whirlwind of controversy, unanswered questions, and uncertainty that could stretch through the rest of President Donald Trump’s term and beyond.
Read more »
Britain faces growing threat of Russian electronic warfareBritish officials confirm that neither the pilot nor the plane was placed in danger by electronic attacks, but eyewitnesses witness malfunctioning navigation systems, and at least one military aircraft uses older nautical charts.
Read more »