Top 10 Most Deadly Poisons Known To Mankind

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6. Polonium:


Polonium is a radioactive element, essentially poison, a slow killer with no cure. Discovered by Marie and Pierre Curie, 1g of vaporised polonium can kill about 1.5 million people in just a couple of months. The most famous case of polonium poisoning is that of ex-Russian spy Alexander Litvinenko and Yasser Arafat. Polonium was found in Litvinenko’s tea cup – a dose 200 times higher than the median lethal dose in case of ingestion. He died just 3 weeks later.


7. Strychnine:


Strychnine is a white, odorless, but bitter crystalline powder that can be administered orally, breathed in, or mixed as a solution and given intravenously. It is a strong poison; only a small amount is needed to have severe effects in people. Strychnine poisoning can cause extremely serious adverse health effects, including death.

The primary natural source of strychnine is the plant Strychnos nux vomica. This plant is found in southern Asia (India, Sri Lanka, and East Indies) and Australia. The extent of poisoning caused by strychnine depends on the amount and route of strychnine exposure and the person’s condition of health at the time of the exposure.


8. Mercury:


Low levels of mercury, especially the mercury found in fish, are not toxic to adults who eat and digest it. However, inhaled mercury vapor (the metal starts turning to a gas at room temp) are known to attack the brain and lungs, shutting down the central nervous system. Daphne Zuniga, a lover of sushi, once experienced mercury poisoning and it was not pretty.


9. Oleander:


This is considered the most poisonous plant in the world. Despite being used for decorative purposes, it is most poisonous to animals and humans. A single ingested oleander leaf can kill a child. It results in diarrhea, vomiting and abnormal stomach pain and drowsiness amongst other symptoms. First 24 hour survival is crucial.


10. Sarin:


This is a deadly nerve gas. Symptoms initially include a runny nose and tightness in chest. Breathing can become constricted soon after coming into contact and nausea does set in. You then loss control of all your body functions and become comatose. Your body at that point convulses and spasms while you suffocate.


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