Definition for harmful and irritant substances? how do they affect the human bod!
Question:
Definition for harmful and irritant substances? how do they affect the human body?
Answers:
I guess nobody has answered this question because it is such a broad topic.
Also, the answer is in the question - they affect the human body by causing harm or irritation.
Alcohol, for example, is a harmful substance and affects the body in many ways - causing inhibition of nerve impulses leading to drowsiness, coma and possible death, or irritating the liver by stimulating enzyme function and leading to liver damage and failure eventually.
All substances will work in different ways, on different tissues.
Certain normal substances can cause irritation - for example wheat can irritate the lining of the gut, causing irritable bowel and vaiour symptoms.
I hope that this goes some way towards answering your question!