Prge 14 The Guardian Tues, Sept. 30, 1958 
     
    
   
   
    
       
     
    
   
   
    
     in a series on tobacco research 
     
    
   
   
    
     ” i The International # Cancer Congress   
     
     ' and Cigarette Smoking I ‘  
     
    
   
   
    
     Earlier  year, in London, England,'2,000  ‘ 
     
     from. 63 countries attending the7th International Game: , ' 
     
     . _ . Congress—gan- event held every-four years — were given . ,- I, 
     
     ' 9 , l x the latest data On cancer and smoking by the world’s , V , . V ‘  '_ 
     
    
   
   
    
     K 
     
    
   
   
    
       
     
    
   
   
    
     foremost cancer  .Rothmans Research scientists 
     
    
   
   
    
     were also there and have examined the papers submitted 
     
    
   
   
    
     along with their own findings. -_ ' 
     
    
   
   
    
     . ‘ no CANADIAN mass and smokers from coast, to coast 
     
    
   
   
    
     have shown widespread interest and a desire for more 
     
     information on this important subject. The following report 
     
     is a brief summary of the facts as they stand at this 
     
    
   
   
    
     moment:-' ‘, ' 
     
    
   
   
    
     ‘ ' I. Rothmans  Division accepts the-stutterich evidence link- ‘ 
     
    
   
   
    
     ing lung cancer’with  stacking. t'Ihisis done as a precautionary 
     
     measureintheintcrestofsmokers. “‘ '. 7 p i 
     
    
   
   
    
     . ‘ 2.4m exact biological relationship  smoking and: em in 
     
     maukindis still nothnown and a directlinkhas hotbeenproved. 
     
    
   
   
    
     3. 1b research laboratory-maintainer. studiecjon  have _ 
     
     been largely negative. However, theapplication. of tobacco tar’on the . 
     
      skin of certainanimals has produced cancer and therefore indicates 
     
    
   
   
    
     that tobacco smoke. condensate contains Carcinogenic  which 
     
    
   
   
    
     areatléastactivetothose-animals. :  _  
     
    
   
   
    
     4. The "suspected chemicals in tubacoo smoke that be‘ve‘ produced 
     
    
   
   
    
     cancer in animals have been identifiearn afraotio'nation studies, the ‘ 
     
    
   
   
    
     majority of the {aetive carcinogenic agents were located in ,the fraction 
     
     which is elutedtwitb carbon tetrachloride fromthe ncuu'al tar. This 
     
    
   
   
    
     ‘ fraction represents only {11.7% of totalltobaecotur'and, when applied in 
     
     .3 the heavy concentration of‘10%, produced 100% cancer on  
     
    
   
   
    
      ’5. Further studies were then  to determine whether there 
     
    
   
   
    
     was a threshold level at which totalgtobaeco tar would not produce 
     
    
   
   
    
     canoer on animal skin. It was'discovered that there was a dose level at} ‘ 
     
    
   
   
    
     which the development of animal canoe): was so small, and the latent 
     
    
   
   
    
     ' period before the formation of tumours so long, that for all, material 
     
     . purposes it represented‘a threshold lech This  level is about » 
     
    
   
   
    
     one-third the optimum level. »‘ - 
     
    
   
   
    
     L ,. 6. Transposing this data to cigarette Smoking, an increasing-section 
     
    
   
   
    
     of scientific opinion believes that if the tar intake from a single cigarette 
     
     were reduced to the range of 18 to 20 milligrams (mgs.), there would be 
     
     a significant reduction in the possible risk of lung cancer. Most of the 
     
    
   
   
    
     . world’s cigarettes today yield in the vicinity of 30 mgs. and there are 
     
    
   
   
    
     many which exceed 40 mgs. . ‘ 
     
    
   
   
    
     N.B. The control a: 18-20 mgs. of the tar intake floor a single 
     
     Rothmans King Size cigarette is achieved as fillowsf- 
     
     (2") the use of tobaccos 4‘ lower tar content, 
     
     (a) the fitting ofan gfective filter which-reduces ficther, and in 
     
     correct proportion, the mount of tar atten‘hg the mouth and 
     
     I Izmgs, and ' 
     
     (iii) the stubbng out of the butt of a cigarette ‘equivalent to‘ about 
     
     one-third of its total length (for which purpose the extra length 
     
      quothmans King Size is provided). _ , A _ 
     
     The balance between satiyacfion, filtrcfian and case of draw is 
     
     constantly checked by scientgfic treatments, - 
     
    
   
   
    
     7. There are no scientific grounds to justify the reduction after in a 
     
     single cigarette to less than 18-20 mgs., except in theme of very heavy 
     
     smokers of more than 2 packs (40 cigarettes) a  
     
    
   
   
    
     MB. To such smokers Rothmans advocates moderation, 
     
    
   
   
    
     lkeo'ucing the tors in cigarettes to the level «$18-20 mgs.‘ does not 
     
    
   
   
    
     l 
     
    
   
   
    
     eject the pleasure ofsmohl'og. braced, once people have mkodsiel 
     
     cigarettes, theyfind satisfaction and  in the cleaner woke. 
     
     Below 18-20 mgs., tobacco begins marked] to lose its mam! aroma. 
     
     and there wouldbcless  as thereadingsch'op. . 
     
    
   
   
    
     's. Unbmedmbsccocontaimnomfemhgagmflteym ‘ 
     
    
   
   
    
     formed onlyduringcomtiuSflon. :‘Any plant material sets free cancer 
     
    
   
   
    
     forming a’gentsgwhen burned at a high temperature. (If-lettuce were 
     
    
   
   
    
     smoked, the result would. be the same.) 
     
    
   
   
    
     homebontmenfiddle ofacigarcttelength tethebutgth'etem; 
     
     perature reaches 880°C. (i30°C.). When this  ' 
     
     below 700°C.-,- the biologiCal  on the skin  animals is  l 
     
    
   
   
    
     .to almost nil. 
     
    
   
   
    
     ' Asafurmnprecwdmarymememsearchprojectsonthispmblem’ r 
     
     include the  for a chemical to make‘tobacco burn at a lower  
     
    
   
   
    
     teniperaturc. 
     
    
   
   
    
     ’- MB. The present straight Virginia process also by 
     
    
   
   
    
     I Rothnmmploysnochanicahwhatsoevaccmddmchcaficab 
     
     - be used unless a direct biobgical-Iink (w‘divthtctfi'om a statistical ' 
     
     “iz’nk)makesitnecessorytotreattabaccowflhsuchaeatalyst., _ 
     
    
   
   
    
     o 
     
    
   
   
    
     9. some statistical studies indicate is higher mortality rate from . 
     
    
   
   
    
     lung cancer among cigarette smokers thansmongsmokers ofcigm  
     
     pipes. Hanover, in laboratory experhnents, the carcinogenic activity 
     
    
   
   
    
     ' fromcigar and pipe smoke was found to be greater than in cigarette“ 
     
     "smoke, because, burning at a high temperature to: a longer  _ ' 
     
    
   
   
    
     -mmbusfionismbtemmpht6in¢igmandinm 
     
    
   
   
    
     ( ‘ ’ _ l 
     
     10. The tobecemeancer problem is dificult and nebulous. It has 
     
     brought forth many conflicting theories and evidences. But great , 
     
    
   
   
    
     knowledge andabetterunderStandinghavebeen gained throughreseard). 
     
     ThewnuwersyisamatterofpubficmmThctaroontentsoffln 
     
     world’s leading brands cram are today ends the scrutiny or 
     
     medical and independent research. ' , a 
     
     A list of cigarettes, some of which have achieved sipificant tar 
     
     reductionsofupto40%infl1epastyear.wastabledatthelutemfional 
     
     Cancer Congress by an eminent cancer expert. *» ' - ’ 
     
     MB. The performance of Canadian made Rothms KingsS'ize 
     
     cigarettes (as previously certified by independent rcsemch) 
     
    
   
   
    
     RothmansKlngfichfltcrfleldvfiomuflslthm 
     
     mmefmatherbesmumgfieerbrmancm v.\ ' 
     
    

    
     Rothmans King Size lhrtzppedyieldsfium 26.5% to 34.0% leg 
     
     torszhonzhcfizreehesrknownplazhmdbmdsmmadmg  * 
     
    
   
   
    
     0THMANs Research Division welcomes this opportunity - l 
     
    
   
   
    
     to reiterate its pledge:- 
     
     (1) to continue its policy of all-out research, ‘ 
     
     (2) to impart vital information as soon as available, and 
     
    
   
   
    
     (3) to give smokers of Rothmans cigarettes improvements 
     
     as soon as they are developed. “ ” 
     
    
   
   
    
     In conclusion, r as with all the" good things of modern 
     
     living, Rothmans believes that with moderation smoking can 
     
     remain one of life’s simple and safe pleasures. 
     
    
   
   
    
     \ Thisoninouncemenit has been issued by 
     
     ROTHMANS INTERNATIONAL RESEARCHnDIVISION 
     
    
   
   
    
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     new 
     
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