carcinogens-After the carcinogen enters the body, the body makes an attempt to eliminate it through a process called bio transformation. The purpose of these reactions is to make the carcinogen more water-soluble so that it can be removed from the body. However, in some cases, these reactions can also convert a less toxic carcinogen into a more toxic carcinogen. Common examples of non-radioactive carcinogens are inhaled asbestos, certain dioxins, and tobacco smoke. Although the public generally associates carcinogenicity with synthetic chemicals, it is equally likely to arise in both natural and synthetic substances.Carcinogens are not necessarily immediately toxic, thus their effect can be insidious. Carcinogens may increase the risk of cancer by altering cellular metabolism or damaging DNA directly in cells, which interferes with biological processes, and induces the uncontrolled, malignant division, ultimately leading to the formation of tumors. Usually, severe DNA damage leads to apoptosis, but if the programmed cell death pathway is damaged, then the cell cannot prevent itself from becoming a cancer cell.Carcinogens can be classified as genotoxic or nongenotoxic. Genotoxins cause irreversible genetic damage or mutations by binding to DNA. Genotoxins include chemical agents like N-nitro-so-N-methyl-urea (NMU) or non-chemical agents such as ultraviolet light and ionizing radiation. Certain viruses can also act as carcinogens by interacting with DNA. Intoxicated do not directly affect DNA but act in other ways to promote growth. These include hormones and some organic compounds.

TOBACOO
Smoking is not a drug problem,The nicotine found in tobacco products is very addictive.The power of addiction has been compared to cocaine and heroin addiction.it does cause withdraw symptoms such as irritability,insomnia, and nervousness.Carbonated drinks,coffee, and alcohol will increase one’s craving for tobacco.Despite killing 6 million people each year, tobacco use is still rampant worldwide, according to the new edition of the Tobacco Atlas, a report from the American Cancer Society and the World Lung Foundation. Drawn from the report, here are five startling tobacco facts worth knowing.Smokers lit up more than 5.8 trillion cigarettes in 2014.People have consistently been smoking fewer and fewer cigarettes for the last several decades in Europe and the Americas, but that improvement has been offset by growth of cigarette consumption in China. The average adult there smoked more than 2,000 cigarettes in 2014.The average age a person begins smoking is at 13.The average person begins using smokeless/spit tobacco at 12-15 years.Most new tobacconists are adolescents,not adults.Troubling Health Facts about Smoking and Teens Girls who smoke are more likely to grow excess facial hair.Smoking as few as 5 cigarettes a day can reduce teens’ lung function growth, with teenage girls being especially vulnerable.40% of teenagers who smoke daily have tried to quit and failed.
About 2/3 of teen smokers say they want to quit smoking, and 70% say they would not have started if they could choose again.
44% of teens say they didn’t know bidi cigarettes could lead to cancer. Find out about bidis One bidi cigarette produces 3 times as much nicotine and carbon monoxide as a regular cigarette and 5 times as much tar.Teens who smoke produce twice as much phlegm as teens who don’t.Teens who smoke break out more.Zits last longer for teens who smoke.Kids who smoke 2 or 3 cigarettes a day can get hooked in as short as two weeks.Teens who smoke are more likely to catch a cold than people who don’t – and their symptoms will probably be worse and last longer.Teenagers who smoke use more medications than those who do not smoke.Teenagers who smoke have significantly more trouble sleeping than those who do not smoke.1 out of every 3 young people who become regular smokers will die of a smoking related disease.If current smoking patterns in the United States persist, approximately 5 million of today’s children will die prematurely of tobacco-related diseases. Read about Preventing Chronic Diseases and Tobacco Use from the CDC.Most people start using tobacco before they finish high school. This means that if you stay smoke-free in school, you will probably never smoke.