1/24/2008

Sorry, never mind, the case of children's vaccines

The hysteria about mercury in childhood vaccines went on despite "reams of scientific studies," but the pressure of lawsuits forced pharmaceutical companies to change how they make vaccines. Now a new TV drama is continuing the crusade, but I found this interesting:

For the last decade some parents and advocates for autistic children have championed the theory that a mercury-based vaccine preservative called thimerosal, developed in the late 1920s and used in many childhood vaccines until about seven years ago, is a primary cause of autism in young children.

Autism often is diagnosed in children between their first and fourth years, during the time that many children begin receiving regular rounds of vaccinations.

But reams of scientific studies by the leading American health authorities have failed to establish a causal link between the preservative and autism. Since the preservative was largely removed from childhood vaccines in 2001, autism rates have not declined. . . .


And people wonder why the pharmaceutical is under siege.

Labels: , ,

1/18/2008

So how will they catch cheating on tests now?

Has it just become nearly impossible to catch cheaters on tests? Will students have to have their eyes examined before taking the SATs? Foxnews has the following:

Scientists have taken the first step toward creating digital contact lenses that can zoom in on distant objects and display useful facts. For the first time, engineers have installed an electronic circuit and lights on a regular contact lens.

Labels: ,

12/11/2007

"Human Evolution Seems to Be Accelerating"

5/26/2007

Yet, another benefit from drinking coffee

4/16/2007

"Cell Phones May Be To Blame For Disappearing Bees"

I just watched the news this morning and found it comical that cell phones were being blamed for the sudden drop off in bees over the last year. How long have cell phones been around for? Why the sudden drop off? Montana and some other fairly low population states are also experiencing the drop off. I can only assume that they have less of their land area affected by cell phone radiation. Both the time period and the areas affected make me strongly suspect that there is another cause going on here.

Researchers in Germany may have found the cause of disappearing honey bees -- a worldwide problem that has also hit Colorado beekeepers hard. . . .

A German study shows that radiation from cell phones can disrupt bees' navigation systems. That keeps the bees from returning to their hives.

In some cases, 70 per cent of bees exposed to radiation failed to find their way back to the hive after searching for pollen and nectar, according to the research by Landau University.

Colony Collapse Disorder has affected beehives in 24 states, including Colorado. Losses of 50 to 90 per cent of colonies have been recorded. The loss rate is 40 percent in some Colorado's 30,0000 colonies. Beekeepers said that many of their bees never return to the hives and the hives dwindle and die. . . .

Labels:

3/06/2007

The Lancet estimate of 650,000 Iraqis Dying a Fraudulent Claim?

The statistics made headlines all over the world when they were published in The Lancet in October last year. More than 650,000 Iraqis – one in 40 of the population – had died as a result of the American-led invasion in 2003. The vast majority of these “excess” deaths (deaths over and above what would have been expected in the absence of the occupation) were violent. The victims, both civilians and combatants, had fallen prey to airstrikes, car bombs and gunfire.

Body counts in conflict zones are assumed to be ballpark – hospitals, record offices and mortuaries rarely operate smoothly in war – but this was ten times any other estimate. Iraq Body Count, an antiwar web-based charity that monitors news sources, put the civilian death toll for the same period at just under 50,000, broadly similar to that estimated by the United Nations Development Agency.

The implication of the Lancet study, which involved Iraqi doctors knocking on doors and asking residents about recent deaths in the household, was that Iraqis were being killed on an horrific scale. The controversy has deepened rather than evaporated. Several academics have tried to find out how the Lancet study was conducted; none regards their queries as having been addressed satisfactorily. Researchers contacted by The Times talk of unreturned e-mails or phone calls, or of being sent information that raises fresh doubts. . . . .

Labels: , , , ,

2/01/2007

The "Bogus" Science of Secondhand Smoke

This person must be really hated among medical people, but my guess that he is sufficiently only that he is willing to go against the political correctness on the smoking issue. Look at his background: "former deputy director of the National Cancer Institute's Division of Cancer Cause and Prevention, and he received the U.S. Public Health Service Superior Service Award in 1976 for his efforts to define less hazardous cigarettes."

In any case, from an economist's point of view, the entire debate over secondhand smoke is largely besides the point when it comes to these regulations. The question an economist would ask is whether whatever harm from the secondhand smoke in born by the smoker, and the answer is that there is not a problem as long as someone owns the air. In a restaurant or other building someone clearly owns the air and bears the cost of allowing the air to have more smoke in it than their customers desire. Some people may like to smoke with their meals and they will pay to do it and others might want perfectly clean air. Even if you only had one restaurant in town, the restaurant owner has a strong incentive to give the customers who value the type of air the most what they want.

Smoking cigarettes is a clear health risk, as most everyone knows. But lately, people have begun to worry about the health risks of secondhand smoke. Some policymakers and activists are even claiming that the government should crack down on secondhand smoke exposure, given what "the science" indicates about such exposure.

Last July, introducing his office's latest report on secondhand smoke, then-U.S. Surgeon General Richard Carmona asserted that "there is no risk-free level of secondhand smoke exposure," that "breathing secondhand smoke for even a short time can damage cells and set the cancer process in motion," and that children exposed to secondhand smoke will "eventually . . . develop cardiovascular disease and cancers over time."

Such claims are certainly alarming. But do the studies Carmona references support his claims, and are their findings as sound as he suggests?

Labels: , , , ,

11/26/2004

Lancet Survey on Post War Fatalities in Iraq Continues to be heavily Criticized

If the New York Times critiques you (even with caveats) from the right, you know that you are in trouble:
Three weeks ago, The Lancet, the British medical journal, released a research team's findings that 100,000 or more civilians had probably died as a result of the war in Iraq. The study, formulated and conducted by researchers at the Bloomberg School of Public Health at the Johns Hopkins University and the College of Medicine at Al Mustansiriya University in Baghdad, involved a complex process of sampling households across Iraq to compare the numbers and causes of deaths before and after the invasion in March 2003.

The 100,000 estimate immediately came under attack. Foreign Secretary Jack Straw of Britain questioned the methodology of the study and compared it with an Iraq Health Ministry figure that put civilian fatalities at less than 4,000. Other critics referred to the findings of the Iraq Body Count project, which has constructed a database of war-related civilian deaths from verified news media reports or official sources like hospitals and morgues.

That database recently placed civilian deaths somewhere between 14,429 and 16,579, the range arising largely from uncertainty about whether some victims were civilians or insurgents. But because of its stringent conditions for including deaths in the database, the project has quite explicitly said, ''Our own total is certain to be an underestimate.''

It has refrained from commenting on the 100,000 figure, except for noting that such a number ''is on the scale of the death toll from Hiroshima'' and, if accurate, has ''serious implications.'' Certainly, the Johns Hopkins study is rife with assumptions necessitated by the lack of basic census and mortality data in Iraq. The sampling also required numerous adjustments because of wartime dangers -- and courage in carrying out the interviews. Accordingly, the results are presented with a good many qualifications.


I haven't spent a lot of time going through the methodology used in this survey by Lancet, but it seems obvious to me that those surveyed could have lied to create a false impression. After all, some of those interviewed do have a strong political motive and there is the concern that they could greatly exaggerate the number of deaths to those conducting the survey. There is also the question of the comparability of the before and after war fatality rates. Andrew Bolt has a very extensive and interesting critique of the Lancet paper:

But what evidence we have tells us these pre-war death rates were actually much higher. Dated United Nations figures suggest the overall death rate was well over seven in every 1000 – or close to, if not higher than, the present rate of 7.9 in every 1000 that the Lancet survey suggests.

But even more persuasive are 2002 figures from UNICEF, which in a much bigger survey of 24,000 households found the infant mortality rate in Iraq before the war was actually a tragic 108 deaths per 1000 infants.

This is more than three times higher than the Lancet survey claims was the case – and double what even the survey claims is the infant mortality rate today. . . .

The researchers did not ask for proof of the children's deaths and admit they were reluctant to ask for proof of all the adults' deaths, either, "because this might have implied that they did not believe the respondents, perhaps triggering violence". Were the Iraqis likewise scared to tell the truth?

Labels: , , ,