To: Maurice Winn who wrote (7363 ) 7/27/2008 2:39:43 AM From: Maurice Winn Read Replies (5) | Respond to of 12231 Comment in Moderated stream: Message 24795815 MQ + X = 2C Continued. With possibly 1% of gliomas caused by cellphones, that's some basis for the worries of the academics: nzherald.co.nz Some countries have a high incidence and I suppose the epidemiologists mean for each age group because older people get more of them: <There is around a fourfold difference in the incidence of primary malignant brain tumors between countries with a high incidence (e.g. Australia, Canada, Denmark, Finland, New Zealand and the US) and regions with a low incidence (e.g. Rizal in the Philippines and Mumbai in India).7, 8 Differences in diagnostic practices and completeness of reporting make all geographic comparisons difficult.7 In addition, higher incidence rates appear in countries—and perhaps in states within the US—with greater access to health care and better medical care.7, 8 Some geographic variation is not easily attributable to this phenomenon, however, as malignant brain tumors are twice as common in Northern Europe as they are in Japan. Therefore, environmental factors might account for some of the observed geographic differences. >nature.com Japanese use LOTS of cellphones LOTS of the time and have been doing so since the beginning. So, it is immediately obvious that with a maximum of 1% of brain cancer caused by cellphones, the risk is trivial compared with other causes. Is there a business opportunity in burying people with brain cancer due to cellphones? With 13,000 total per year dying it's not a big market in any particular area and trivial compared with other causes of death. At possibly 1% of them being due to cellphone use, the total per year is only 130 in the whole USA. That's trivially insignificant. <Approximately 13,000 deaths and 18,000 new cases of primary malignant brain and CNS tumors occur annually in the US.1 During the years 1998 to 2002, the average annual age-adjusted incidence rate of primary malignant brain and CNS tumors among adults aged 20 years and over in the US was 9.0 per 100,000 person-years1, with rates ranging from 7.3 per 100,000 person-years in Virginia to 10.5 per 100,000 person-years in Maine and Idaho. Table 1 shows the individual rates for different glioma histologic subtypes, their median ages at diagnosis, and rates for men and women. GM, the highest grade tumor (grade IV), is associated with the highest median age at diagnosis. The different characteristic age distributions of glioma subtypes are available at the CBTRUS website.1 All gliomas are more common in men than in women, although these gender differences are quite small in the case of oligodendroglioma. Because of the differing age distributions of different glioma subtypes, and because overall rates are driven by the most common glioma type, GM, the general statements made above are not representative of the demographic characteristics of gliomas in individuals below the age of 20 years.> From Table 1,http://www.nature.com/ncpneuro/journal/v2/n9/fig_tab/ncpneuro0289_T1.html we can see that the median age of glioblastoma is 64, which is old. People of that age do NOT use and have not used cellphones much at all. But the other brain cancers have much lower median ages, but still not in prime cellphone usage range. There are, more or less, about 8000 in the sub-50 year old age group. If 1% of those are due to cellphone use, then that would mean something like 80 people a year dying from cellphones in the USA. The cyberphone and cellphone industry in the USA is worth $200 billion a year give or take a bit. People accept far greater risks for far less benefit in other activities. Compare car crash, motorcycle and smoking death rates for example, which are all self-inflicted problems AND they come with swarms of maimings too [brain cancer people die]. Cellphone use is not much of a problem, if it is a problem at all, in regard to brain cancer. Mqurice