Skip to main content

B17: The Killer Vitamin

What is a vitamin? I don't mean the different types of vitamins or the shops where they can be bought. I mean, what makes something a vitamin? Perhaps a vitamin is only a useless chemical that serves no purpose, and is therefore called a vitamin to make it seem useful when it really isn't. I prefer to think of a vitamin, however, as an essential chemical that our body needs to grow and survive.


Unfortunately, the former definition is sometimes the more accurate one; in fact, some of the vitamins being sold today do nothing good for the human body. One example of this is vitamin B17.

Laetrile was named a vitamin in the 1900's when Ernst T. Krebs, Jr. wanted to get around the restrictions on drugs by selling laetrile as a nutritional supplement. Some say that Krebs was a medical doctor, but he never even got a doctoral degree, except for an honorary degree from a school not accredited to award advanced degrees. In reality, Krebs was just a chemist that wanted to make money.

Apricot kernels contain amygdalin,
a precursor to laetrile.
The laetrile Krebs sold was a cyanogenic glycoside formed by chemically modifying amygdalin, another cyanogenic glycoside extracted from apricot kernels and naturally present in apple seeds.

A glycoside is formed by bonding a particular chemical with a sugar, rendering the chemical inactive. When the chemical is needed, the sugar is broken off, and the chemical can be used. A cyanogenic glycoside is a glycoside containing cyanide; because the cyanide is inactive, it is harmless – until ingested. Then, the stomach metabolizes the chemical and breaks the sugar off, so the cyanide is released.

Laetrile is a cyanogenic glycoside, so if enough laetrile is ingested and is metabolized to produce enough cyanide, the result is death. This has happened to multiple people. Because of its toxicity, it is now illegal to ship laetrile on interstates in the U.S.

Sadly, many people don't seem to realize how dangerous vitamin B17 is, and take laetrile as a cancer supplement. I have seen 500 mg pills sold on Amazon in bottles of 100 for more than 80 dollars a bottle, with a reviewer rating of almost 5 stars. Of course, laetrile can certainly kill cancer, but it also kills the rest of you as well. Meanwhile, some people wonder why B17 isn't manufactured in the U.S.

The most frustrating part is that some people don't WANT to know the truth about laetrile. They appear to have the attitude that believing makes it true, and whenever anybody tells them what they don't want to hear, they just ignore it. This is more common than you might think, and in psychology is often referred to as the belief-bias effect. I saw a funny 1-star review on Amazon that basically explained the toxicity of vitamin B17; it had been voted down by 4 other Amazon users. When I tried to inform inquisitive Amazon members about the dangers of taking laetrile as a supplement, other reviewers immediately began posting aggressive comments in response. They just wouldn't listen to reason.

To their credit, there are some good arguments for laetrile. There were a few doctors who did research on the effects of laetrile on rats, and sometimes the study results seemed to suggest that laetrile could be beneficial to a persons health (or a rat's health, as the case may be). In most of these studies, the methods used were not fool-proof, and were replicated to show ineffectiveness.

But some of the positive study results are very hard to ignore, even though they've been discounted. These studies, however, involved injections of laetrile into the bloodstream, not laetrile taken orally. Laetrile does not release cyanide when it is taken intravenously, and the subjects of those studies were not harmed. Because those studies involved injections of laetrile, they don't support the oral B17 pills sold online. And yet those studies are still referenced by the quacks marketing the stuff.

It's a sad world we live in. People will believe anything as long as it sounds good, and then they die as a result. Well, at least they can't say I didn't warn them.

See also:
http://www.cancer.gov/cancertopics/pdq/cam/laetrile/patient
http://ajcn.nutrition.org/content/32/5/1121.long
http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/2004/ucm108314.htm
http://onlinelibrary.wiley.com/doi/10.3322/canjclin.31.2.91/pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1272529/
http://www.medicalnewstoday.com/releases/9825.php

To receive future blog posts, subscribe now!

Comments

Popular posts from this blog

Which Hurts More?

212° F Let's play a little game. I'll list a bunch of possible actions. Each action will have 2 variations, (a) and (b). You choose either (a) or (b), depending on which would be safer (or less painful). Each of the questions will involve an oven hot enough to bake a cake (350° F), and a pot of boiling water (assume we're at sea level). So... would you rather: 1.     (a) Stick your hand in the oven     (b) Stick your hand in the boiling water   ... for a period of 10 seconds 2.     (a) Leave a fork in the oven     (b) Leave a fork in boiling water   ... for a period of 15 minutes. Then hold the fork tight with your bare hand. 3. Fill a jar to the top with cool tap water. Then:    (a) Place the jar in the oven    (b) Place the jar in the boiling water   ... for a specific, but unknown, period of time. Then remove the jar and put your hand in it. First see if you can figure these out yourself. They shouldn't be too...

2014 in Photos

The year of 2014 is over; the year of 2015 has begun. Over the past year, I took a lot of pictures - more than 1200 photos of clouds, bugs, plants, rocks, and more. I deleted most of the low-quality and repetitive photos. Then, I selected 20 of the remaining photos which I thought were the most interesting or significant. In this post, I'll include those photos, in chronological order. Spring 1. Cold Hummingbird I took this photo after a late snowstorm in Spring. In the days leading up to the storm, it was warm and sunny and the fields were green, so the snow came rather unexpectedly. During the storm, one of the hummingbirds at our feeder was covered in ice and could barely fly. This hummingbird was more fortunate, but unlucky nevertheless. 2. Green Landscape I took this photo on the side of a biking trail. I didn't edit or crop the photo - this is how it looked. 3. Indian Paintbrush The Indian Paintbrush is an unusual flower. What appear to be flower petals are actually brigh...

Nature Wallpaper

I collected 12 of the highest-resolution, best-quality photographs of nature I've taken over the past few years, cropped them to highlight the important parts, and then applied JPEG compression. Now I'm releasing them for my blog readers to enjoy as a desktop background. To download as a .zip file, click here . Note that the photos shown in this post are low-resolution previews. If you have any questions about the wallpaper, please comment! New posts every month -  subscribe for free !