Monthly ArchiveAugust 2008
Kabuki 29 Aug 2008 07:06 pm
EU unsure about regulating polonium in tobacco
Traces of polonium present in tobacco recently raised questions at the European Commission, while traces of radioactive and other substances – such as radon, polonium and cadmium – contained in tobacco leave open questions as to whether they should be regulated at EU level.
Following media reports about the dangers of polonium contained in cigarettes, the Commission is studying whether or not the substance should be included in the list of regulated ingredients, a spokesperson for the EU executive told EurActiv.
Up till now the EU has regulated additional substances found in tobacco products such as nicotine, tar and carbon monoxide, but did not take into account the tobacco leaf itself, running counter to World Health Organisation (WHO) recommendations.
Asked whether such highly dangerous radioactive and poisonous substance could be regulated at all, the Commission official responsed that this was a difficult question to answer.
Tobacco firms knew about the presence of polonium in cigarettes and the dangers it involved, but the results of the research were not published for fear of “waking a sleeping giant”, according to Monique Muggli of Mayo Clinic in Minnesota, quoted in the September edition of the American Journal of Public Health.
Polonium 210 is a highly radioactive substance which has been found to cause lung cancer in 90% of cases. It is this very same substance which poisoned former KGB agent Alexander V. Litvinenko.
Regarding the relationship between polonium 210 and the radioactivity of cigarettes, Muggli said: “The companies wanted to hide from that issue publicly. They continue to minimize the recognition of radioactivity in their products in smoking and health litigation,” quoted in The Independent, a British daily. So far, the Commission’s tobacco legislation has set limits on nicotine, tar and carbon monoxide yields to be applied in all member states.
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CiglessBot 25 Aug 2008 09:28 am
Small changes can help prevent cancer
Making small changes could make a big difference in preventing cancer. Avoid preventable risk factors by incorporating these guidelines into of your lifestyle.
Smoking damages nearly every organ in the human body, is linked to at least 15 different cancers, accounts for about 30 percent of all cancer deaths and costs billions of dollars each year, according to the American Cancer Society. In the United States, cigarette smoking is responsible for about 90 percent of all cases of lung cancer — the leading cause of cancer death. Smoking cigars and pipes or chewing tobacco isn’t safe either.
“The importance of not smoking cannot be over emphasized in the prevention of cancer,” says Dr. Thomas Johnson, oncologist with Sacred Heart Medical Oncology Group. “Quitting is imperative for anyone who uses tobacco. Even people who have used tobacco for many years reduce their risk of cancer by quitting, as compared to people who continue to use tobacco.”
“The predisposition for lung cancer does run in families,” Johnson says. “Smokers with relatives who have contracted lung cancer are at extremely high risk for developing cancer themselves, due to their genetic makeup. You will often see multiple cases of lung cancer in a family that has a history of COPD, emphysema or lung cancer — those family members are predisposed to cancer and should not smoke. Tobacco use alone increases their risk of cancer by 10 to 20 percent.”
Eat healthy foods and get regular exercise
Fully one-third of cancer deaths are linked to poor diet, physical inactivity and carrying excess weight. The American Cancer Society recommends that you limit foods high in fat, eat five or more servings of fruits and vegetables each day and limit alcohol, if you drink it at all. Include moderate physical activity (such as brisk walking) for at least 30 minutes on most days of the week to help achieve or maintain a healthy weight.
“Being overweight increases cancer risk by causing the body to produce and circulate more of the hormones estrogen and insulin, which can stimulate cancer growth,” said Dr. Dee McLeod, oncologist with Sacred Heart Medical Oncology Group. “Studies suggest that people whose diet is high in fat have an increased risk of cancers of the colon, uterus and prostate. Lack of physical activity and being overweight are risk factors for cancers of the breast, colon, esophagus, kidney and uterus.”
Avoid harmful sun exposure
Most skin cancer occurs on exposed parts of your body, including your face, hands, forearms and ears. When going out in the sun keep these tips in mind: Avoid peak hours of the sun’s ultraviolet (UV) radiation between 10 a.m. and 4 p.m., stay in the shade, cover exposed skin with clothes and hats and use sunscreen that has a sun protection factor (SPF) of at least 15.
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Kabuki 21 Aug 2008 05:26 am
Bigger Belly May Up Smokers’ Lung Cancer Risk
(Reuters Health) - Smokers who carry more weight around their waistlines may be at greater risk of lung cancer, according to a new study.
The finding, along with the fact that lung cancer risk is actually higher among leaner smokers, provides “intriguing” evidence that how a smoker stores fat could play a role in his or her likelihood of developing lung cancer, Dr. Geoffrey C. Kabat of the Albert Einstein College of Medicine in the Bronx, New York, told Reuters Health.
Several studies have found that a lower body mass index (BMI) means a higher lung cancer risk among smokers. “Reflex explanations” for the link include the fact that smokers are skinnier than non-smokers, Kabat noted in an interview, as well as the tendency for people to gain weight after they quit smoking. Another proposed mechanism for the relationship is that people lose weight when they develop lung cancer.
But careful analysis of the data doesn’t bear out these explanations, Kabat said. To better understand the relationship, he and his colleagues looked at data from the Women’s Health Initiative.
Over the course of 8 years, 1,365 of the study’s 161,809 participants developed lung cancer. When the researchers looked at BMI after adjusting for weight circumference, they found that both smokers and ex-smokers with lower BMIs had a greater lung cancer risk.
But when they looked at waist circumference independent of BMI, they found that a larger waistline conferred a greater likelihood of lung cancer for smokers and ex-smokers. There was no relationship between BMI or waist circumference and lung cancer risk among never-smokers.
The findings, reported in the American Journal of Epidemiology, must be confirmed by other investigators, and don’t offer any clues on the mechanism behind the relationship, Kabat noted.
However, he speculated, “it may have to do with the storage, the mobilization, and the metabolization of carcinogens. These carcinogens … tend to be stored in fat tissue. That may play a role in the development of lung cancer. It may be that it’s linked to smoking but that it plays a role on top of smoking.”
He added: “We’re not ready to give people advice, because overall the advice would not be changed. We’re not advocating that people lose weight so that they have a lower risk of lung cancer. Smoking is so far and away the dominant risk factor.”
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CiglessBot 16 Aug 2008 01:50 pm
Antioxidants May Protect Smokers from Lung Cancer
Healthnotes Newswire —Smoking generates free radicals in the body, causing cell damage that can sometimes lead to cancer. A study found that smokers might protect themselves from developing lung cancer by eating foods that are rich in antioxidants called flavonoids.
Quit smoking now—the best bet for better health
Smoking increases the risk for several cancers and heart disease, in addition to causing emphysema and other chronic airway diseases. People who quit smoking lower their chances of developing these diseases and can actually repair some of the damage that smoking has caused.
If quitting smoking proves an insurmountable task, though, there are some things that smokers can do that may help protect them from the effects of cigarette smoke.
Flavonoids—nature’s cancer fighters
Flavonoids are plant-derived compounds that are capable of scavenging free radicals in the body. Studies have shown that flavonoids have anticancer properties, but most of these trials have used amounts of flavonoids much higher than those typically found in the diet. The new study, published in the journal Cancer, aimed to determine if flavonoids could protect against lung cancer in smokers and nonsmokers, by comparing the amount and types of flavonoids eaten by 558 people with lung cancer and 837 healthy people.
Smokers who ate more of certain flavonoids called catechin, epicatechin, quercetin, and kaempferol, as well as more vegetables, tea, and wine were less likely to develop lung cancer than smokers who ate less of these flavonoids and foods. Surprisingly, the protective effect of these foods and flavonoids was not seen among nonsmokers. “These results may reflect the finding that these flavonoid compounds are strong antioxidants against free radicals generated by tobacco smoking,” said the authors.
Dr. Lise Alschuler, author of Alternative Medicine Magazine’s Definitive Guide to Cancer, 2nd Edition: An Integrative Approach to Prevention, Treatment, and Healing, commented, “These findings underscore the significant anticancer properties of flavonoids. Even a relatively small amount of dietary flavonoids exerted significant effects. This effect was most obvious in smokers likely due to the fact that smokers are typically severely depleted in antioxidants and have high exposure to cancer-causing chemicals.”
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Kabuki 13 Aug 2008 08:41 am
Genetic Achilles Heel For Nicotine Addiction
If you have the less common rs16969968 form of the CHRNA5 gene and you smoke a cigarette you are more likely to get hooked. Yet another reduction in the possible scope for free will.
In a paper published in the September issue of the journal Addiction, , a multi-university collaborative team of researchers specializing in statistical genetics, gene analysis, and trait analysis reports an association between a variant in the CHRNA5 nicotine receptor gene, initial smoking experiences, and current smoking patterns.
The genetic and smoking data come from 435 volunteers. Those who never smoked had tried at least one cigarette but no more than 100 cigarettes in their lives, and never formed a smoking habit. The regular smokers had smoked at least five cigarettes a day for at least the past five years.
The regular smokers in the study were far more likely than the never-smokers to have the less common rs16969968 form of the CHRNA5 gene, in which just one base-pair in the gene sequence was different from the more common form. This kind of genetic variation is called a single nucleotide polymorphism or SNP.
Smokers were also eight times as likely to report that their first cigarettes gave them a pleasurable buzz.
“It appears that for people who have a certain genetic makeup, the initial physical reaction to smoking can play a significant role in determining what happens next,” says senior author and project leader, Ovide Pomerleau, a professor of psychiatry at the University of Michigan Medical School and founder of the U-M Nicotine Research Laboratory.
“If cigarette smoking is sustained, nicotine addiction can occur in a few days to a few months,” he adds. “The finding of a genetic association with pleasurable early smoking experiences may help explain how people get addicted — and, of course, once addicted, many will keep smoking for the rest of their lives.”
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Kabuki 07 Aug 2008 07:38 am
Researchers discover why some smokers addicted with first cigarette
Addicted to smoking from your first puff? Blame it on a chemical pathway in your brain.
Researchers at the Schulich School of Medicine and Dentistry have discovered differences in brains that explain why some individuals become addicted to tobacco with their first cigarette while others are initially sickened by the experience.
It comes down to one brain pathway that uses dopamine, a neurotransmitter, to transmit signals related to the rewarding properties of nicotine.
Working with animals, the University of Western Ontario scientists found they were able to manipulate specific dopamine receptors in the brain to control whether nicotine was rewarding or aversive.
The work was published today in the Journal of Neuroscience.
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Kabuki 02 Aug 2008 09:19 pm
The War Against Tobacco
One of the most dangerous diseases we should worry about is cancer. However, many people do not believe they could suffer from a cancerous disease, hinging their argument on the fact that certainly, one thing or the other would definitely be responsible for a man’s death.
However, the truth is that several diseases, like cancer, are precipitated by men’s behaviour, their attitude to health issues, the type of food they eat and certain things or habit they are addicted to.
For instance, millions of people all over the world are heavy smokers and alcoholics, despite the billions of naira being spent on public advertisement to warn people of the inherent or potential danger of smoking tobacco? Are you also aware that despite the increasing prevalence of skin cancers among men, some still prefer to spend their last kobo on a stick of cigarette even if they lack enough cash to buy food that will nourish their body system. That is the kind of life an addicted smoker is used to.
According to medical submissions, several thousands of people today are heavy or “chain” smokers, not by choice, but because they have found no way of escape. Such people are caught in the grip of a habit developed during their teenage years when so many young people think or believe it is “smart” to smoke. Some others believe that one of the ways to display his “arrival” as a“big boy” as opposed to his other school mates is to be smoking.
According to Drs. Kayode Ajala, Seun Akinyemi, Dupe Ojo, Adebowale Elemide, and other medical experts who spoke with Saturday Tribune, smoking is not only hazardous to health, it can also be hazardous to your job prospects as well, as twice as many smokers are said to be out of work compared to non-smokers. Although a few people will accept this fact, documented report globally shows that cancer of the lung is becoming very widespread today and it is increasing more rapidly than any other type of cancer —thanks to the increasing use of tobacco.
According to the medical doctors, the primary cancer of the lung, also known as bronchogenic carcinoma often begins within the lung or one of the bronchial tubes. Though the global war against the use of tobacco or smoking of cigarette is yielding some positive results, especially in the areas of public education and enlightenment, nonetheless, many tobacco users, including women, are still falling into the trap of lung cancer and other associated diseases.
The major problem is that many of them are not usually aware of the potential dangers of smoking, but by the time they are aware of their deterorating health or true condition of things, the disease from tobacco may have already progressed far beyond the earlier stages. This is what makes lung cancer dangerous and difficult to treat.
Medical reports also say that at present, one heavy cigarette smoker out of every ten will die of lung cancer. The Federal Government of Nigeria realised and appreciated this fact and initiated many programmes of national interest like “Say No To Tobacco Smoking”,” ban on smoking in public places”, “No smoking in government offices and parastatals” and many other programmes to discourage the use of tobacco, but all these have yielded little result as smoking in public places is still one of the most common things in the country.
Globally, every year, the country joins the rest of the world in marking the ‘World No Tobacco Day’ and it is usually a celebrated day in developing nations like Nigeria, but the big question is: “Why are we still having many tobacco or cigarette producing companies in the country, if actually we want to achieve a positive result in our battle against cigarette smoking?”
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