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In environ tobacco rimm ancer COIlgleSS Candi Cigaretté SmOking Earlier this year in London England 2000 scientists from 63 countries attending the7th International Cancer Congress an event held every four years were given the latest data on cancer and smoking by the worlds foremost cancer experts Rothrnans Research scientists were also there and have examined the papers submitted along with their own findings no CANADIAN mess and smokers from coastlto coast have shown widespread interest and adesirc forniore information on this important subject The foliowihg report is brief summary of the facts as they stand at this moment Rothmans Research Division accepts the slalirncol evidence lihk ing lung cancer with heavy smoking This is done as precautionary measurpintheintercst ofsinokers The exact biological relationship between smoking and cancer in mankindis still not known ands directlink has notbccn proved In research laboratory work inhalation studies on animals have been largely negative However the application of tobacco tar on the skin at certain animals has produced cailcer and therefore indicates that tobacco smoke condensate contains carcinogenic substances which are at least active to those The 511st chemicals in tobacco smoke that have produced cancer inanin1 have been identified In fractionation studies the majority of the active carcinogenic agents were located in the fraction which is eluted with carbon tetrachloride front the neutrgxlitar This fraction represents only 17 of total tobacco tar and Twhen applied in the heavy concentration of 10 produced 100 cancer on animalvskin Furtherstudies were then conducted to determine Whether there was threshold level at which totaltobacco tar would notproduce cancer on anhnal skin It was discovered that there was dose Idem which the development of animal Cancer was so smalland the latent period before the formation of tumours so long that for allrrnnterial purposes it represented threshold leveLThis lével is about onethird the optimum level flransposing this data to cigarette smoking as increasing sécti ofscientifie opinion believes that if the tar intake from single cigarette were reduced to the range of 18 to 20 milligrams nigs there would be significant reductionin the possible risk of lungcancer Most of the worlds cigarettes today yield in the vicinityoraomgs and there are manywhichexeecd40mg5g MB The controlmg 1820 mgr of the tar intake from in single RotlmansKingSizechgareueisachicvedarfallows gt 11 the ureqftobaceosoflowcr tar content ii the fitting of on fictive filter which redness further and in correct proportion the omoun of tar cloning the mouth ahd ongmud ii the stabbing out of the but of cigarette equivalent to about onethird of its total length fbr which purpose the extra lenglh quolhmaILr King Size is provided 271a balance between satirfacnan filtration and ease of draw it commva checked byclentific inhumane There are no scientific grounds to justify the reduction of in single cigarette to less than 1820 mgs except in the ease or very heavy smokers otmorethaanacks 40 cigarettes day NB fosuchnmkers Rothnnms odvocaler moderation tors cigarettes to the level of 1820mgs defence This Lennon 171 afiec lhe pleanlre of smoking IIIIced once people hoverniokefruck cigarettes thcyfindsalirfoclion and enjoyment in he cleaner smoke Ethrlv1820n1g5 tobacco begins markedly to lose its mm and aromo and there would be has and 1ch souraction as the readings drop Unbumcd tobacco contains no cancer forming agents They aio formed only during combustion Any plant materialsets free cancer forming agents when burned at high temperature lflettuce were smoked the result wouldbethe same prom about the middle of cigarette length tovthe butt the tern peraturereaches 880°C i30°C When this temperature is reduced mow 700°C the biologifl activity on the skin of animals is reduced toalmostnil gt As further precautionary measure research projects onthis problem include the search for chemical to make tobacco bum ata loivér temperature The present straight rirginio manufacturing procession uhgi byf Rothmanr employs no chemicals whatsoever Nor would my chemical be uredjmless direct biological link distinct from slatistical link makes it necersary to treat tobacco With each catalyst Some statistical studies indicate higher mortality rate front lung cancer among cigarette smokers than among smokersofcigars and pipes However in laboratory experimentsthe carcinogenic activity from cigar and pipe smoke wasteland to be greater than in cigarette smoke because burning at high temperature fora longer combustion is more complete in cigars and in pipes 10 The tobaccocancer problem isdiilicult and nebulous It has brought forth many conflicting theories and evidences But great knowledgeandabetterunderstandinghavebeengainedthroughrescarchi The controversy is matter of public interest The tar contents of tho worldsleading brands of cigarettes are today underthe xer medical and independentresearph list of cigaréttes some of which have achieved signifi reductions of up to 40 inthe past year was tabled at the International IChneer Congress by an eminent cancer expert NB The performance of Canadian made Rothmons Kingsiza clgbretter as previoizrly certified by independent research thawed that Ralhnzonr mg Size Filter yardsfmni 14410 ism414 fag than the firm olher best selling Filler brand in Rothnions KingSize Unnppédyleldrfiorn 265 to 340 or rorr than the three best known plainend brand in romANsheseareh Division welcomes this spasman to reiterate itspledgez to continue its policy of allout research to impart vital information as soon as avaiilhhie slid to give smokers of Rnthigrians cigarettes improve as soon astheyare developed fie Intcoriclnsion as Witliall the goodthinfi can living Rothmans believes that with moderation smoking remain one of lifes simple are pleasures