“A toxin is a poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable, notably toxic when introduced into the tissues, and typically capable of inducing antibody formation.”
Below here is the list of toxins which are lethal for the humanity on earth.
Botulinum is THE deadliest poison known to humanity. When human being comes in contact with his poison then immediately within fraction of seconds the nerves system gets shut down completely and the victim will die immediately with a lot of pain. One spoon of this poison can kill millions of people
The deadliest poison ever manufactured is VX. This VX (nerve agent) is known as the most dangerous nerve gas. It was initially marketed as a pesticide but was soon banned as it was very dangerous to the human beings. But very soon it caught the attention of the government of many countries and they started using it like a weapon in the world wars. A single drop of VX on the human skin can be fatal.
3. Ricin or Castor
Ricin is generally extracted from the castor bean thus considered as one of the deadliest poisons known to Humanity. Even a small amount of it can cause death. Ricin actually stops the protein production in the human body which is essential for the human survival and the person goes into shock. It can be produced every easily as it is produced from castor bean. Many countries starting using this as a weapon also as it can be produced easily.
4. Tetrodotoxin or Puffer Fish Toxin
Abbreviated as TTX, Tetrodotoxin is a lethal neurotoxin whose name is derived from Tetraodontiformes. This tetrodo poison is found in the puffer fish. This poison can be found on the skin, intestine and liver of the fish. It causes mental implantation and paralysis. There are only few cases registered who are dead with this poison but whoever was attacked is dead.
The toxicity of mercury is actually far more complicated, depending critically upon the kind of mercury involved. Organic and inorganic mercury compounds have different effects.
Pure mercury is considerably less toxic, as dramatically illustrated by the case of a dental worker who attempted suicide by injecting the liquid element into her veins. Ten months later she was effectively symptom-free, despite having mercury distributed throughout her lungs.
6. Poison Frog
Though the frog is the size of the tip of your thumb, it has enough poison to kill more than 10 men. The poison can either be a cardiotoxin, meaning it stops the working of your heart, resulting in instant death, or a neurotoxin whereby an amount equal to 2 grains of salt can kill an adult human. They are used by Native Americans for hunting purposes. The arrow head is covered by the batrachotoxin from the skin of the frog, and it becomes a deadly weapon.
7. Snake Poisons
Also read: 5 Killer Snakes You Must Know About
Like botulinum toxins, most snake venoms are a mixture of many proteins which are often neurotoxins with LD50s below 1 mg/kg. A crucial complication here, however, is the speed of activity. While some snake venoms may be highly potent, other, less potent venoms might kill faster. This is vital information. A potent but slow-acting venom might leave enough time to intervene, while a fast-acting poison with a lower LD50 might kill you before you can get help.
Polonium is one of the deadliest poisons present in the world. It has no use in biological science since it is extremely lethal to all living organisms. Its most common form is Polonium 210, which is allegedly 250,000 times more deadly than hydrogen cyanide.
In theory, a gram of Polonium 210 could wipe out 10 million people if ingested, injected or inhaled. If the radiation doesn’t kill you, then you are likely to get cancer.