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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