It can take a lot to convince a person to quit smoking. Oftentimes, people aren't fazed by all the chemicals packed into that little stick. Nor do they care about the fact that they can easily get cancer from smoking. But what if cigarettes started to contradict your religious beliefs? If you're a devout Jew or Muslim who smokes, you may not want to hear this.

Dutch research, studying the use of pigs, has shown that pig hemoglobin is often used in cigarette filters. If you're Jewish or Muslim (or a vegetarian, for that matter), you probably don't eat pork products. But would you smoke them? According to a professor at the University of Sydney, this knowledge is likely going to be a problem for many people around the world. He says, "I think that there would be some particularly devout groups who would find the idea that pork in cigarettes to be very offensive... The Jewish community certainly take these matters extremely seriously and the Islamic community certainly do as well, as would many vegetarians."

It also brings up the concern that cigarette companies aren't forced to tell consumers what is in their product. The professor says, "It just puts into hard relief the problem that the tobacco industry is not required to declare the ingredients of cigarettes - they say that's our business and a trade secret." But isn't it your business to know?

Some tobacco companies are voluntarily listing the ingredients in their cigarettes on their websites and some are listing one ingredient as "processing aids." At least one company has admitted that those "processing aids" come from pigs.

If you were Jewish, Muslim, or a vegetarian, would this be enough to get you to stop smoking? Or, because you've been doing it for so long that it's just not important? The only way to make sure you're avoiding pork products in your cigarettes is to quit all together. Since the companies aren't required by law to list ingredients, you can never know for certain what's in your cigarette. The professor says, "If you're a smoker and you're of Islamic or Jewish faith then you'd probably want to know and there is no way of finding out." Kind of scary, isn't it?

Even those of us who do enjoy bacon and pork chops are a bit grossed out by the fact that cigarettes contain pig's blood. And now we're thinking, if we didn't know about that, what other ingredients are not listed that is in our food products?

Do you think this latest revelation will encourage a lot of people to finally quit smoking? Or will their addiction be stronger than their religious beliefs?