WHAT IS TOBACCO .FORM OF TOBACCO AND WHAT IS ACTIVE AND PASSIVE SMOKER
No tobacco day:may31
It is dried and cured leaves of young branches of solanaceous herbs nicotiana tobacum and nicotiana rustica.the leaves are large ,broad,ovate,to lanceolate in outline.they are picked up,dried and cured to yield tobacco.In earlier time its smoking was called pipe of peace as it was believed to provide tranquility ,relaxation and alertness.
Form Of its Use:
It is used through three methods -smoking,chewing and snuffing.chewing is done along with betel leaves ,as paan masala or gutka and khaini.In khaini tobacco is mixed with hydrated lime and kept in the mouth for slow dissolution.snuff is fine tobacco powder which is inhaled for direct dissolution in the mucous membrane of the nasal tract.smoking is the most common form of tobacco use.here it is burnt and the smoke is inhaled .It is smoked as cigaretee ,cigar,bidi,pipe and hookah.cigar is made of rolled tobacco leaves .in cigarette finely cut and wrapped in paper.most cigarette are filtered tipped.In bidi,It is wrapped in leaf of kendu or tendu.In pipe ,tobacco is smoked directly while in hookah (hubble-bubble)smoke of tobacco preparation khamira is first passed through water and then inhaled.In smoking ,the burning region has quite high temperature which cause pyrolysis of tobacco ingredients.It produces a number of new compounds through pyrosynthesis.
Active and Passive smokers
Active smokers is a person engaged in smoking .An active smoker inhales only10% of the smoke.The inhaled smoke is called mainstream smoke .The remaining smoke emitting from cigaretee,cigar or bidi is called sidestream smoke.sidestream smoke contains more air pollutant than mainstream smoke.however sidestream smoke passes into larger volume of air.Therefore,the concentration of pollutants is less.Nonsmoker sharing the space with the active smoke involuntarily inahales the sidestream smoke and puffed out air of the active smoker .Nonsmoker who inhales involuntarily the air polluted by smoke from an active smoker is called passive smoker.Active smoker comes to have tobacco stains on fingers and teeth .children of smoking parent who share the same place are liable to develop early symptoms of respiratory illness and middle ear defects.Ocular burning is quite common in passive smokers.
Ingredients of its smoke
3.oxide of nitrogen,ammonia
5.indole and carbazole
8.phenol and cresol
It is cause the development of cancer .Its smoke a number of carcinogens-hydrazine,nitrosoamines,vinyl chloride ,polynuclear aromatic hydrocarbons etc. now hope you like this next time we discuss harmful effect of tobacco.