Ames Test - Carcinogens and Natural foods

[gdawg48]

who is this guy? he rocks!

[Aerosmithism]

Gosh, I never looked at it that way.

there is no natural way out

[dabigplaya2389]

Great professor. Wish I had him when I was an undergrad!

[michalchik]

Synthetic insecticides may or may not be worse, part of the problem is that synthetic pesticides do not primarily work by mutagenesis like many natural ones to. They are neurotoxins (organophosphates, pyrethrins, DDT, carbamates), endocrine disruptors (juvenile hormones).

[SkullRipper2247]

i started to watch to this video because i had to do my coursework about carcinogens and after watching all of it,all of this video,instead of being bored staring at my monitor i am actualy pretty interested,who knew that science could be interesting at times.

[SigmaXVirus]

People in this page don't know what "chemical" means.

Fucking propaganda.

[jbrown677]

Thanks alot...My bio prof. failed miserably in describing such a simple yet ingenious test.

[tmassays]

So Organic foods that dont have chemicals are more carcinogenic than foods without chemicals? I guess this guys hasnt been to an organic farm. They put natural ingredients like Cayenne pepper and garlic to ward off bugs. Let me see the test that proves what this guy is saying is correct.

[tmassays]

On top of chemical sprays, there are chemical fertilizers.

[Kwalk014]

@tmassays

It's called the Ames test.

[michalchik]

There is a basic flaw in his reasoning. Though the Ames test is very useful in identifying substances as mutagens when those substances are new to the environment, they are not as useful for determining whether a substance that an organism evolved with, is harmful. Quite simply the bacteria that are used in the AMES test do not normally try to metabolize fresh plants. Primates have eaten them for a long time. We have defenses against phytotoxins and exploit them. We have evolved defenses to them

[xntyghb]

Scientists are now concerned about decent with modification. Isn't that now listed in the science books as one of the requirements of life? if the bacteria didn't have cancer, they just lived. Microbes are known for mutating so why should I worry about that. Show me on lab rats or people.

[michalchik]

@xntyghb They do experiments on lab rats and people also, they correlates well but not completely with the bacteria. We mostly know why there are differences. Bacteria are WAY cheaper and easier to do test on because you can breed them by the billions for a few hundred dollars. Rats much less people on that scale would break the national budget for cancer research. The same types of mutation that save the lives of bacteria, cause cancer, birth defects and evolution of new traits.

[Laghmanistan]

I have a practical on this in about 15 minutes, and I went through the video without sound, because i am in my Uni's library, I didn't understand anything, from reading the comments it appears to be helpful, I am very bloody pissed off! dammmmmn!, (of course I thought of headphones I don thave any)

[Freducation]

Hello Dr. Venovski's microbiology class!!

[Shrubbs]

Coffee IS really bad for you

[michalchik]

@Shrubbs I drink tea

[ElHombreConDosOjos]

In 1902 Dr. John Beard made the connection between those cells that turn malignant and those that form embryonic tissue as being virtually identical. Scurvy & pellagra are examples of fatal vitamin-deficiency diseases. There's only cancer. One doesn't call a bruise to the knee a "knee bruise," as opposed to 1 to the cheek as a "cheek bruise." China's experiencing a spike in cancer deaths as they're abandoning their Amygdalin-rich Oriental diet for our Amygdalin-poor Occidental diet.

[michalchik]

@stephenrigsby True, and these plant mutagens may be good for us because we evolved to be tolerant and to exploit them. These plants are not the natural foods of these bacteria.

[theothersally]

This sounds like propaganda. What kind of research does this guy do and who funds it?

[ThePoisonSword]

This guy is professor Richard A. Muller, a professor at the University of California, Berkeley. He specializes in physics and other related topics, this particular lecture is for "Future leaders of America", or something along those lines (check the link in the video description just to be sure).

Now that you mention it, it does sound a bit like propaganda, but all of his facts are reasonable and sound, and there are other lines of evidence pointing to similar conclusions.

[onomiyaki]

This is the internet, why don't you just find out?

[kamesangogo]

Wow... that was eye opening. Thanks to the uploader!

[beads116]

i have a lab on this tomorrow..i have to say- this is really helpful!!! THANKS!!!

[Jayhawk26]

We just ran the Ames Test in my genetics lab, and after watching this video I have a much better understanding of the topic. Thanks a lot.

[exaltron]

I hear your eloquent and rational arguments, but my gut still tells me that natural and organic is safer. So I will continue to punish my gut with natural carcinogens until it stops telling me to do stupid sh!t.

Seriously though, great lecture. It saddens me that only a handful of people are willing to make such unfashionable arguments, while whacko environmentalists gain ground every day in their quest to return society to the good old days of pre-industrial society.

[cpichili]

thank u

[faolitaruna]

It's discusting how people use video comments tosell their miracle therapies. I think they search for tags like "carcinogens" and then pastes spam.

[theco0olguy]

hmm intersting. im doing a microbiotic diet.!

[PhenixFine]

"There isn't enough proof that laetrile is an effective treatment for cancer or any other disease. Most of the websites promoting laetrile base their claims on unsupported opinions and anecdotal evidence.

One animal study claimed that amygdalin slowed the growth of cancer in animals and helped stop tumours spreading to the lungs. But repeated studies couldn't show similar results, so the treatment remains unproven."

[procommenter]

Laetrile will never be proven effective by the drug companies. It doesn't matter. Submit to "proven/approved treatments" and die a horrible death. Take Amygdalin and live.

[PhenixFine]

Are you serious? If it could be proven, they'd be just as happy to make money off of that. And what the hell do drug companies have to prevent cancer now and make money off of? Nothing that I know of.

[PhenixFine]

"Amygdalin (the active ingredient in laetrile) has shown anti-cancer activity in two studies when given with enzymes. This is most probably because the enzymes cause the amygdalin to release cyanide, which killed the cancer cells grown in the lab. One website promoting laetrile includes the quote 'When we add laetrile to a cancer culture under the microscope, providing the enzyme glucosidase is also present, we can see the cancer cells dying off like flies.'"

[PhenixFine]

"This isn't surprising, as the glucosidase makes the laetrile release cyanide, which is a poison. The difficulty is getting the amygdalin close enough to cancer cells, along with the glucosidase, to cause it to kill them without poisoning surrounding normal tissues or the whole body."

[PhenixFine]

You do realize that anecdotal evidence rarely means anything, don't you?

"For example 'my grandfather smoked like a chimney and died healthy in a car crash at the age of 99' does not disprove the proposition that 'smoking markedly increases the probability of cancer and heart disease at a relatively early age'. In this case the evidence may itself be true, but does not warrant the conclusion."

[PhenixFine]

Wow. I don't even know where to begin. You buy into people trying to sell you a miracle cure, with nothing more to go on than anecdotal evidence, without question. And yet think controlled scientific reviews stating otherwise, is some conspiracy made up by the so called pharmaceutical cartels.

If it was a fact then it would have held up to scientific scrutiny. Yes, more studies are needed. Until then, I think it would be a bad idea to take something that could cause more problems than cure.

[PhenixFine]

I'm done wasting my time with you. If it had such a relation with cancer that vitamin C has with scurvy, then it would already be a mainstream accepted fact.

[sironyx]

Basically what he saying is, we're all farked eventually.

[803brando]

yup

[thisismypassword69]

dude eat heathly... i get cancer and if i eat not healthy i get fat...great..

[EntranceDenied]

Well, you can eat both and get cancer and fat. Isnt that better? lol

[Karpens16]

"laugh and grow fat"

-Fatman

[caribbeanstylez]

why cant my lectures be this interesting....

[CERNOBE]

VERY interesting, thanks for posting, i'm going to watch the full leture now.

[moniker127]

Oh, and I would like to note that I was eating nacos from 7/11 while watching it. I thought that was funny.

[moniker127]

Wow that was an interesting talk.