This substance is called nicotine.
Brain
If by relax you mean cause cancer then yes. Dude, stop posting these. Anyways, there is a chemical in cigarettes that makes people relax.
It certainly dose, a chemical in cigarettes and other tobacco products, called nicotine destroys brain cells it also causes addiction which makes it almost impossible to quit. So never start smoking and you will not endure all those problems. FUN FACT: tobacco is also filled with sidewalk tar
I don't think so, but it probably could cause it.
Tar is the chemical found in cigarettes that blackens the lungs. Tar is a sticky substance that is released when tobacco is burned, and it contains various harmful chemicals that can cause damage to the lungs over time.
Cigarettes cause lung cancer, and I believe that they also can clog up the little hole in your lungs (I forget what they are called, but that is how the oxygen get to your body.
Antibiotics aren't addictive so no they can't cause addiction.
The only addiction LSD can cause is psychological addiction, and even this is unusual.
Yes, any kind of addiction can cause a person to be angery.
Maybe there is weed in cigarettes!!
I believe Tar is what gives it the blackish color but there are MANY chemicals that cause cancer in cigarettes.
Yes. It can most definitely lead to and cause addiction to methamphetamine.