Health Care

Uncooked fish can come with a nasty parasitical worm, doctors warn

Uncooked fish can come with a nasty parasitical worm, doctors warn”

Doctors have issued a warning against consumption of sushi, saying that it may pose a serious health hazard due to the presence of parasites in raw or undercooked fish and seafood.

Sushi lovers are being warned of the dangers of ingesting parasites from raw and undercooked fish.

The man's symptoms cleared up after the larva was removed.

The growing popularity of sushi could fuel a rise in deadly parasitic worm infections, doctors have warned.

And it was this that had been causing the man "severe epigastric pain, vomiting and low-grade fever" and "moderate abdominal tenderness" for about a week, the doctors wrote.

In the report, doctors in Portugal describe getting to the bottom of the man's stomach pains.

The researchers in that case said at the time that raw fish prepared at home can contain anisakis and other risky parasites because the fish may not have been frozen beforehand - a process typically rendered in sushi restaurants that kills the larvae.

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This inner vision revealed a swollen intestinal membrane with a firmly attached parasite, its end penetrating the stomach.

Sushi has a healthy reputation - it can be low fat and high in protein - but a new report serves as a stark reminder that sushi made with raw fish can carry a risky parasite.

Similar cases have been reported in Japan, the authors said, where a diet of raw fish and seafood is very common. Some people will develop complications, including digestive bleeding, bowel obstruction and peritonitis, inflammation of the inner wall of the abdomen.

Dr Joana Carmo, a gastroenterologist at the Egas Moniz hospital in Lisbon, concluded: "Owing to changes in food habits, anisakiasis is a growing disease in Western countries, which should be suspected in patients with a history of ingestion of raw or uncooked fish". The larva was removed, and the patient's symptoms improved immediately, according to the BMJ report.

"For example, freezing fish to the appropriate temperature and for the appropriate duration can kill parasites", Rowland said.

The Food Standards Agency noted that raw fish occasionally contain parasitic larvae, but said that under European food hygiene legislation fish that is to be eaten raw should be frozen before it is sold to consumers to ensure any parasites have been killed.



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