29/12/2019
A top 10 best post of 2019 and one worth saving
This Subject is Toxic
The plant in the picture is natural, beautiful, and yet its seeds contain ricin, one of the world’s most poisonous natural compounds.
Toxicity is one of the least understood concepts in popular health information, and you are likely bombarded by sensational and inaccurate information on this subject almost daily, especially if you're on social media. It's a good time for a review.
Because there are technical differences between something that is a toxin, poison, venom, carcinogen, etc., the words “toxic” and “toxicity” in this article are defined as something that is a carcinogen, poison, toxin, or is otherwise directly harmful to life.
So, let’s start with a quiz. Of these 10 items, which ones are toxic?
1. Water
2. Oxygen
3. The sun
4. Titanium dioxide
5. Iron
6. Cyanide
7. Alcohol
8. Vitamin A
9. Formaldehyde
10. Chocolate
The answer is all of them, and none of them, and it depends.
Whether something is toxic or not depends on the dosage, the route of exposure, and the length of exposure. Here are some examples to illustrate the point:
Water
We all know we’re supposed to drink plenty of clean water. Without adequate hydration you will die. But, if you inhale it, it can be deadly. There are also cases of death related to intake of too much water too fast.
Oxygen
We need a certain level of oxygen in the air we breathe to survive. The mixture in the atmosphere is about 20%, along with nitrogen and other gases. But, breathing pure oxygen too long can cause cell damage and death, especially in the central nervous system, lungs and eyes.
Sun
Obviously we need the sun to survive, for many reasons. And an adequate level of exposure to sunlight is the primary source of vitamin D for most people on earth. On the other hand, solar radiation is a class 1 carcinogen, meaning it is known to cause cancer.
Titanium dioxide
Too much lung exposure to nanoparticles can cause cancer. This is typically associated with inhalation due to industrial chronic exposure. It is not absorbed orally or dermally, and is basically inert through those routes of exposure.
Iron
Iron is an essential mineral absolutely necessary for survival. It is also one of the top causes of poisoning deaths among children.
Cyanide
We all know cyanide can be deadly. But small amounts are easily excreted through the urine, and it does not accumulate. And that is good, because many healthy foods contain cyanide: spinach, bamboo shoots, flax seeds, cassava, and others.
Alcohol (ethanol)
Moderate intakes may be beneficial for health, yet it is also classified as a class 1 carcinogen.
Vitamin A
Excessive amounts can be toxic to the liver, yet vitamin A deficiency is the leading cause of childhood blindness in the world.
Formaldehyde
Also a class 1 carcinogen, but you may not be aware that formaldehyde is naturally occurring in significant dosages in many fruits, berries, seafood and mushrooms. In addition, formaldehyde is involved with methylation reactions and biosynthesis of some proteins and nucleic acids in the body and is a normal constituent in our blood.
Chocolate
With the exception of gaining weight, too much chocolate won’t do you any harm. However, it can be highly toxic to dogs and some other animals. The point is, that just because a specific poison works to kill a plant or an insect, does not automatically mean it is poisonous to humans.
Almost the Same Doesn’t Count
Just because something is “almost” the same structure, or sounds the same, does not make it similar. Water is H2O, but adding a single oxygen molecule makes is H2O2, or hydrogen peroxide.
Propylene glycol is absorbed and metabolized rapidly in the liver to lactic acid and pyruvic acid (normal components of the citric acid cycle) and then further to carbon dioxide and water. On the other hand, ethylene glycol is acutely toxic and can severely damage the kidneys.
Don’t judge a substance by its name
A statement often found in the popular media is “If you can’t pronounce it, don’t eat it.” The length or complexity of a name has no relation whatsoever to its safety or benefit. Nor does the fact that it’s natural or synthetic. Simple to pronounce Polonium 210 is deadly at dosages of less than 1 billionth of a gram. While the scary sounding chemical 2-methyl-3-[(2E)-3,7,11,15-tetramethylhexadec-2-en-1-yl]naphthoquinone is also known as Vitamin K.
Toxicity is Relative
We hope this helps illustrate that “toxic” is a relative term. Most healthy substances are potentially toxic, and most “toxic” substances are potentially harmless. It’s the dose, route of exposure, and length of time exposed and other factors that is the difference between harmless and harmful.
Yes, we are exposed to a lot of various toxic and unhealthy compounds as a part of normal life, which is part of the reason it’s important to exercise and get sufficient nutrients through diet and supplements to support the function of our lungs, skin, liver and kidneys (our normal routes of detoxification).
The next time you see or hear or see the word "toxic", take a moment to think about the context. It will make it easier to separate the hype from reality.
