It will not cause harm to your body, it is just a nasty, germy habit. Just like picking your nose...........
Cause they think you might harm him/her.
Pathogens cause Infectious Diseases by pathogens getting into your body and caused harm.
Huffing gas can cause the body organs to malfunction. Huffing gas does not only harm the respiratory system, but can harm the heart and brain.
Some people are allergic and if in contact with the skin, could cause a rash.
Almost all of the body can be damaged by these things. Smoking can damage the lungs and circulatory system, harm the skin, and cause cancer. Uppers can cause the body to age prematurely. Ingested drugs can harm the liver.
this is caused by the fatigu in your body of stress and harmless substences :)
no
No it won't, and this may cause harm to your body. (What kind of question is that anyway?)
No, vitamins usually cause no harm to your body in pure form. If you are buying synthetic vitamins, then they are chemicals which are alien to your body and could cause harm. They are often less effective then the natural type regardless. Natural vitamins can easily be flushed out if your body doesn't need them.
yes
Yes, it is. There are many toxic substances in the "white-out" that can cause harm to your body if inhaled.