Some natural toxins in food can pose a risk

Last Updated: Thursday, 5 July 2018 (12:49 IST)
Kolkata:Natural are toxic compounds that are naturally produced by living organisms.These toxins are not harmful to the organisms themselves but they may be toxic to other creatures, including humans, when eaten. These chemical compounds have diverse
structures and differ in biological function and toxicity.
Some toxins are produced by plants as a natural defense mechanism against predators, 
insects or microorganisms, or as consequence of infestation with microorganisms, such as 
mould, in response to climate stress (such as drought or extreme humidity).
Other sources of are microscopic algae and plankton in oceans or sometimes 
in lakes that produce chemical compounds that are toxic to humans but not to fish or shellfish 
that eat these toxin-producing organisms. When people eat fish or shellfish that contain these 
toxins, illness can rapidly follow. 
According to (WHO) some of the most commonly found natural 
toxins that can pose a to our health.Aquatic biotoxins: Toxins formed by algae in the ocean and fresh water are called algal toxins. Algal toxins are generated during blooms of particular naturally occurring algal species. 
Shellfish such as mussels, scallops and oysters are more likely to contain these toxins 
than fish. Algal toxins can cause diarrhea, vomiting, tingling, paralysis and other effects in 
humans, other mammals or fish. The algal toxins can be retained in shellfish and fish or 
contaminate drinking water. They have no taste or smell, and are not eliminated by cooking 
or freezing. 
Another example is (CFP) which is caused by consuming fish contaminated with dinoflagellates that produce ciguatoxins.
Some fish known to harbour ciguatoxins include barracuda, black grouper, dog snapper, 
and king mackerel. Symptoms of ciguatera poisoning include nausea, vomiting, and 
neurologic symptoms, such as tingling sensation on fingers and toes. There is currently no 
specific treatment for ciguatera poisoning. (UNI)
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