Tobacco Documents Online

,: rNEW YDl?K' 1$E1dAS.,D TRIES(JNI;' ,:New York, New York August 25, : 1962' Cihemioally, the smoke tar'ci8a~'ettes a day Thus the . from a filter cigarette is as'mice paintedi with filtered dangerous a tumor - eausing •smoke tar, received less tar filt th t f d a rom non- ere agent as each day. Consequently,, fewer ~ - " cigarettes, a team of researcherF such mice developed skin reported in the Journal' of tumors. American Medical Associiation In the filter-tip, g•roup. 1'5 . yesterday, out, of, 60 mice developed tu- But' puff' for puff, filter cig- mors In fhe standard' brand • , arettes deliver less tar thar . _... _. .,e ...s..d -„c- non-filtered types. Thus, thougY 6' °""", ' " ' ". • ~ --- -- me mlce in each group d S f ere o , the tar Is qualitatively no dif- ierent, a'amoker using filter, suffered tumors which pro- receives less of it' in the same gr~~ to cancers wifhina year. In other word§;, the fil- manner as he would if he tered smoke tars were no less smoked fewer eigaret'tes. tumor-causing than the non- This is the gist of the impli- filtered. It was only the dif- Cations in a new report' on the ference in the amount of tars effect of' smoke tars from both .L_. __......,, .. ,,:ae..e.,,.e ~.. .,,_ ; sur,er anu non.-iuier eigarett+es mo rates r 1 on the skin of mice. The report' C St op ourae: Ideal was prepared'~ by a1 team f o scientists from t'he Roswell Paris -Memorial Instittrte, Buf- ialo. The Task Zihe scient4sts-Dr: P'red G. Bock, Dr. George E. Moore. Dr. John E. Dowd and' Paul C• Clark-set out to determine oehether filter tips made cigar- ettes any safer than, they are wit'hout filters. . • Since it is impossible to -con= duct a quick or c~tro~e.d: ex- perirtreist witFi-marn, t Fie sci, entists worked with mice. And since science as yet has been unable to, teach a mouse how to smoke like men, the scien- tists mPChantcaily smoked the cigarettes and, then painted the resulting, tars on the shaved skin of the mice. They painted some of the mice with . tars from four standard' brands of' clgarettesr O'thers were painted with tars from filter-tip cigarettes. Still others were painted with Just the solvent used to carry the tars and additional mice were: left' unpainted' but' in anrother- wise similar environment. Both the mice painted with filtered cigarette tars and those painted' with tar from standhrd. brands developed skin tumors • and cancers. One-Third 'Lexv . . The study, establ[shed that filter-tip brands produce one- third less tar per cigarette. The mice in, the study were pairated. with the tar from 8.3 In a sense, the scientists pointed out that filter tips havee the same effect as a cut.down in smoking, which they said helps prevent lung cancer. However, they said; "the ideall course weuld,bB to stop smok- -ing altoeether.," In New York, T. V. Hartnett,, chairman of the Tobacco In- dust'2•y Research Comnli'ttee; is - sued a rejoinder. "It is apparent t'hat' animal skin, painting is not directly relevant to the problem of' human cancer, particularly lung cancer," he said. "More to the point Is this fact--human type lung cancer has neser been pro- duced in animals as a result of having them inhale tobacco smoke throughout their life- t'imes."' In cigarettes-it may be what's in back that' finally counts. . Researchers at BufEalb's Roswelli Park Memorial Institute, reported last week that filters may help smokers simply by reducing the amount of' smoke inhaled; The Buffalo scientists extracted tars from four brands of' unfiltered and two brands of' filtered cigarettes and applied them i repeatedly to the skin of mice. The filter cigarettes, the doctors report in the. o Au ' l i Medi l' f h current urna J ~er o t e ean ca ~' Association, produced a third less tar N) than did' the regular cigarettes-and a proportionately fewer skin tumors. Within a year, 41, of the 78 mice tr VII'~ithin eated with unfiltered tar had tumors; similar growths affected only fifteen of 60 painted with tars from filter tips. "Regardless of whether filters selec- tively remove carcinogens [cancer caus- ing agents] ," said Dr. George E. Moore, head of' the resear& team, "these find- ings suggest that' reducing', the dose of' smoke inhaled will offer some degree of pnoteetion," But the ideall protection, in- sists Dr. Moore, a non-smokers "would be to stop smoking altogether." TIME August 31, 1962 F'rilters & Ccncer Do filter tips really work? 1.es, re- portedi an eminent' cancer researcher in last week's A.M.A. lournal. They make smoking safer-up to a point. Dr. George E. Moore's research team at Buffalo's Roswell Park Memorial In- stitute tested six brands of' cigarettes, four plain and two filtered, by "smoking" them in a machine and collecting the tar. The tar yields from plain cigarettes dif- fered' by less than zo%, but the filtered. brands yielded 67jo less than the un- filtered average. Of 76 mice painted with tar from "straights," 4i developed tu- mors, and 0 of these turned to cancer; of' 6o mice treated with the tar from the same number of filter tips, iSgot tumors, of which three became cancerous. The evidence t'hat filters reduce the risk of lung cancer is "indirect but' mean- ingfvl,"' say Dr. Moore and colleagues: Among, smokers, men who smoke fewer cigarettes have a lower incidence of can- cer; soa presumably, will, those who filter the smoke and' thus cut down the amount of tar they draw into their lungs.