Tag Archives: Cancer

Cell Phone Cancer

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Myth: Cell phones cause brain cancer

Lawsuits and news headlines have fueled the myth that cell phones cause cancer, particularly brain cancer, and 30 percent of Americans still believe this myth, according to the Discovery Health/Prevention telephone survey. Consumers could easily have missed the reports showing no danger from cell phones because they didn’t receive alarming front-page coverage like the original reports. A few studies suggested a link with certain rare types of brain tumors, but the consensus among well-designed population studies is that there is no consistent association between cell phone use and brain cancer. [Source]

Interesting Fact:The very first patent for a cell phone like device (wireless telephone) was granted in 1908 to Nathan B. Stubblefield who some people claim invented the radio before Tesla and Marconi. Stubblefield died as a self-imposed hermit by starving to death.

Doubts on suicide-anti-smoking drug Chantix link

Doubts on suicide-anti-smoking drug Chantix link

Despite earlier health agency warnings, there is no strong evidence that the anti-smoking drug Chantix raises the risk of suicidal thoughts or depression compared to other stop-smoking products, researchers reported Thursday in the British Medical Journal.

Back in July of this year, U.S. health officials ordered strong “black box” warnings be added to Chantix (also called varenicline) as well as anti-smoking drug Zyban, following more than five thousand reports of depression, hostility and other behavioral changes possibly associated with use of these drugs.

“There have been recent concerns that varenicline, a relatively new smoking cessation product, may increase the risk of suicidal behavior and suicide,” study co-author Dr. David Gunnell of the University of Bristol, UK, explained in an email to Reuters Health.

“We found no clear evidence of an increased risk of self-harm or depression associated with varenicline,” he said.

The findings stem from data on more than 80,660 would-be quitters in the UK who used different smoking cessation products between September 2006 and May 2008.

A total of 63,265 of these individuals used nicotine replacement products, 10,973 used Chantix, and 6,422 used Zyban, an antidepressant also called bupropion, which has been found to help smokers quit.

When researchers looked at medical records, they didn’t find any evidence of an increased risk of serious mental health problems (i.e., self-harm, suicidal thoughts or depression) while they were using these products and during the three months after the last prescription was filled.

Gunnell cautioned, however, that based on the size of the study, it’s still possible that Chantix does increase the risk of suicide – or even decrease it.

“Other studies should be undertaken to provide further evidence on this issue,” he concluded.

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Junk food makes you eat more

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Junk food makes you eat more

It triggers messages that are sent to the body’s cells, warning them to ignore appetite-suppressing hormones that regulate our weight.

The effect can last for a few days sabotaging efforts to get back to a healthy diet afterwards, the study found.

The study shows for the first time how particular products can create a vicious cycle of food bingeing.

Lead author Dr Deborah Clegg of the study by UT Southwestern Medical Centre in Dallas, said: “Normally, our body is primed to say when we have had enough, but that does not always happen when we are eating something good.

“What we have shown is that someone’s entire brain chemistry can change in a very short period of time.

“Our findings suggest that when you eat something high in fat, your brain gets ‘hit’ with the fatty acids, and you become resistant to insulin and leptin. Since you are not being told by the brain to stop eating, you overeat.”

The hormone leptin is produced in the brain and suppresses hunger while insulin is produced by the pancreas and regulates blood sugar levels.

Although the study was performed on rats and mice the scientists said their results reinforced common dietary recommendations to limit saturated fat intake as “it causes you to eat more.”

The animals received the same amount of calories in one of three forms of fat – palmitic acid, monounsaturated fatty acid or unsaturated oleic acid which is found in olive and grapeseed oils.

The biggest affect on leptin and insulin was caused by molecules from palmitic acid which is found in beef, butter, cheese and milk.

Dr Clegg, whose findings are published in The Journal of Clinical Investigation, said: “The action was very specific to palmitic acid, which is very high in foods that are rich in saturated fat.

She said it may explain why many people who overindulge on a Friday or Saturday say they are hungrier than normal on Monday.

The findings may also have implications for diabetes research because although scientists have known a high-fat diet can cause insulin resistance, little has been known about the mechanism behind it or whether specific types of fat are more dangerous.

Dr Clegg said: “We found the palmitic acid specifically reduced the ability of leptin and insulin to activate their intracellular signalling cascades. The oleic fat did not do this.”

She said the other key finding is this mechanism is triggered in the brain – long before there might be signs of obesity anywhere else in the body.

Dr Clegg said the next step is to determine how long it takes to reverse completely the effects of short-term exposure to high-fat food.

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