Thursday, 28 April 2005
Vitamin D, calcium supplements not helpful in osteoporosis
Two new studies carried out in the United Kingdom have found that taking vitamin D or calcium supplements does not help prevent fractures in elderly people.
In one study, researchers led by University of Aberdeen professor Adrian Grant randomly assigned 5,292 people over 70 who had already suffered a fracture either to take a dummy pill, a daily supplement of vitamin D, calcium or both supplements together. They were then tracked for between 24 and 62 months.
The researchers found that 13 percent of the patients had a new fracture. For people in the group taking calcium, the fracture rate was 12.6 percent, compared with 13.7 percent of those taking a dummy pill. For those taking vitamin D alone, the fracture rate was 13.3 percent, compared with 13.1 percent for those taking the dummy pill. And for those taking both calcium and vitamin D, the fracture rate was 12.6 percent, compared with 13.4 percent for those taking the dummy pill.
The researchers concluded that supplements do not offer protection from second fractures.
This study appears in the April 27 online issue of The Lancet
In the second study at the University of York, researchers tracked 3,314 women aged 70 and older. Half were given calcium and vitamin D tablets to take daily, the rest just received a leaflet on diet and prevention of falls. All women were monitored for an average of about two years.
The researchers found that about 1 percent of women in both groups suffered a subsequent hip fracture. The researchers concluded that there was no reduction in hip fractures with either calcium or vitamin D.
This study appears in the April 30 issue of the British Medical Journal
An expert interviewed by HealthDay
saw nothing new in The Lancet
study. "I am not surprised," said Dr. Steven J. Goldstein, a professor of obstetrics and gynecology at New York University Medical Center. "By definition, the people they studied here had osteoporosis."
"We know that vitamin D and calcium alone are not sufficient to treat osteoporosis," Goldstein added. "All this study showed is that if you take people who have already suffered a fracture, who therefore by definition have osteoporosis, and you simply treat them with calcium and vitamin D, it's not sufficient. You've already let the horse out of the barn."
Goldstein pointed out that the time to take vitamin D and calcium is when you are young.
Thursday, 21 April 2005
Obesity and mortality
A new study
has found that obesity is not as dangerous as previously thought.
Researchers from Centers for Disease Control and Prevention (CDC) have found that both obesity and being underweight are associated with excess deaths when compared with the normal weight population.
There were 112,000 more deaths than expected among obese individuals, that is, those with body mass index (BMI) of 30 or higher. Among underweight individuals -- those with BMI of less than 18.5 -- there were nearly 34,000 more deaths than expected. However, while most of the excess deaths among the underweight occurred in people age 70 or older, most of the excess deaths among the obese occurred in people younger than 70.
Being slightly overweight -- BMI of 25-29.9 -- was not associated with excess mortality. In fact, the study found 87,000 fewer deaths than expected among those in this BMI range.
Another study by researchers from CDC found that cardiovascular disease risk factors in the US have declined, regardless of BMI. The exception was diabetes, which has increased by 55 percent over the past 40 years.
These studies appear in the 20 April 2005 issue of Journal of the American Medical Association (JAMA)
Most reports on the study linking obesity and mortality have highlighted the fact that it shows that the risk of death from being overweight has been overestimated. Times Online, however, entitled its report on the study "If you want to live longer - put on weight
". This seems unwarranted.
First of all, whether putting on weight is healthy depends on your starting weight. Obesity is still associated with higher death risk.
Secondly, it may be premature to make recommendations based on this study. No one study can be conclusive. The findings need to be replicated in other studies to eliminate the possibility of flaws in the study. With so many factors affecting health and mortality rates, failure to properly account for any factor can have an impact on the overall result. After all, CDC itself had earlier put out a report that predicted a much higher mortality rate from obesity, which, in the light of the findings from the new study, is leading to some controversy in the United States (see the report "Stonewalling: Why Won’t The CDC Endorse New Obesity Deaths Figure?
In any case, as the Times Online itself wrote, quoting Nigel Hawkes, The Times
health editor: "Despite its breadth, the conclusions of the report are limited. It looked only at deaths, not at disease or disability which generally increase with weight".
Wednesday, 20 April 2005
Happiness brings health
A new study has found that happiness may bring health.
Researchers from University College London tested 116 men and 100 women who were taking part in a major study of thousands of London-based civil servants to investigate the risk factors for coronary heart disease. The researchers evaluated the level of happiness of the subjects during the course of the day.
The researchers found that levels of cortisol -- a stress hormone related to conditions including type II diabetes and high blood pressure -- were 32 percent lower in people who reported more happy moments. Happy people also had lower levels of plasma fibrinogen -- a marker for inflammation and an indication of heart disease -- when they were stressed.
The research is published in the Proceedings of the National Academy of Sciences
. The BBC
carry reports on the study.
By focusing on happiness, this study complements some others that find that psychological distress adversely affects health -- see for example "Stress and ageing
Sunday, 17 April 2005
China protests over Japan's new history textbooks
Japanese atrocities committed during World War II have not been forgotten by many people in Asia. If the Japanese need reminding of this fact, the recent protests in China over the Japanese government's approval of revamped history textbooks -- which many people think whitewashes those atrocities -- have done just that.
Thousands protest against Japan as China says relations at 'crossroads'
Thousands of people staged violent anti-Japanese rallies across China Saturday in a second weekend of protests as Beijing said relations with its neighbour were at a "crossroads". Onlookers estimated up to 10,000 people marched along Yanan Road in Shanghai towards the Japanese consulate while several thousand others rallied in the eastern city of Hangzhou and similar numbers in Tianjin, southeast of Beijing.
At the consulate in Shanghai, riot police three-deep linked arms to prevent the rowdy crowd from entering the compound as they pelted it with rocks, bottles and paint, smashing windows. Elsewhere in the city, Japanese restaurants, businesses and cars were attacked with rocks and eggs, while a restaurant was completely destroyed. Two Japanese were injured in Shanghai after being surrounded by a group of Chinese, Kyodo news reported citing the Japanese embassy.
More protests, sparked by the Japanese government's approval of revamped history textbooks which Beijing felt made light of the nation's atrocities in World War II, are expected around China Sunday.
Read the full story here
points to an eyewitness account
of the Chinese protest in Shanghai by Ian Hamet, as well as Hamet's analysis
of the protest.
While many have described the Chinese reaction as excessive, the Japanese government was surely complicit in instigating the protests by the way it handled its history textbooks even as it was opening up another potential area of dispute with its giant neighbour by preparing to let its companies drill for oil and gas in a part of the East China Sea that is also claimed by China.
Having said that, the Chinese people have tended to be nationalistic and xenophobic, traits that are at least partly fuelled by their own government. To quote from Hamet's analysis:
[The protest] was the payoff of decades of anti-Japanese propaganda in the school systems here. Pretty much anyone you ask will say he hates Japan and the Japanese, and takes personal offense at the way Japanese schools teach World War II. Even if he has Japanese friends. And a Japanese mobile phone. And digicam. And reads manga. And watches anime...
However, people here don't know, or don't care, that Japan today is vastly different than 60-70 years ago. The government there was formed under occupation, and I seriously doubt that anyone outside of China (and possibly Korea) has any fear of a renewal in Japanese military aggression. And if you try to explain that to anyone here, the pretty much discount what you say or get shriekingly angry at you for dismissing their grievances.
Furthermore, one aspect of Chinese culture you don't read much about is a nationwide inferiority complex...
And Chinese nationalism is not just directed at past imperialist transgressors. I had written about the tiff that the Chinese government had with Singapore over a visit to Taiwan -- a relatively minor issue blown out of proportion (see "Lee Hsien Loong's Taiwan visit unleashes storm from China
"). This sort of thing gets replayed again and again.
In the meantime, foreign governments can help themselves by avoiding unnecessary provocative action. Japan -- in view of its own past -- probably more so than others.
Monday, 21 March 2005
The China threat
Chalmers Johnson, president of the Japan Policy Research Institute, has written an article entitled "The real 'China threat'
". In the article, he describes how China's rise in the past few decades is being perceived in the United States as a threat to its dominance.
An important basis for Johnson's position is that historically, the United States, like Britain before it, has had difficulty adjusting to the emergence of new centres of power. In the past century, the United States, with Britain, has fought two world wars to curb the rise of Germany and Japan, and a cold war to thwart Russia.
Now, the United States has turned its attention to China. And where Britain was its close ally in opposing Germany and Russia, Japan is now being seen in the United States as its "proxy in...balancing China". Hence, its repeated requests to Japan to rearm, despite the apprehension of most other Asian countries.
Johnson thinks that President Bush's administration has been actively pursuing a strategy that is hostile towards China's rise. He quoted President Bush as saying that he would do "[w]hatever it takes to help Taiwan defend herself". During its convention in August, the Republican Party proclaimed that "America will help Taiwan defend itself". And in February, President Bush went to Europe where he urged European leaders not to lift their ban on military sales to China.
On 19 February, the United States signed a new military agreement with Japan in which the Taiwan Strait was identified as a "common strategic objective". Johnson describes this as the Bush administration's "most dangerous card".
"Japan had decisively ended six decades of official pacifism by claiming a right to intervene in the Taiwan Strait," he warned. "It is possible that, in the years to come, Taiwan itself may recede in importance to be replaced by even more direct Sino-Japanese confrontations. This would be an ominous development indeed, one that the United States would be responsible for having abetted but would certainly be unable to control."
Johnson is almost certainly correct in saying that the Taiwan issue threatens to drag China, Japan and the United States into military conflict. However, President Bush -- to be fair to him -- is not exactly oblivious to the danger.
Recall that in late 2003, in response to Taiwanese president Chen Shui-bian's proposal to hold a referendum regarding China's missile threat -- a referendum which was widely seen as an attempt to stoke independence sentiment among Taiwanese -- President Bush had reaffirmed the United States' one-China policy and said that he opposed any "unilateral decision to change...the status quo", adding that "the comments and actions made by the leader of Taiwan indicate that he may be willing to make decisions unilaterally to change the status quo -- which we oppose" (see the CNN report "Blunt Bush message for Taiwan
Nevertheless, Johnson's overall message -- that opposition to China's rise is dangerous and ill-conceived -- is an important one. He asks rhetorically: "Why should China's emergence as a rich, successful country be to the disadvantage of either Japan or the United States?" Then advises with a warning: "The world needs to adjust peacefully to its legitimate claims...while checking unreasonable Chinese efforts to impose its will on the region. Unfortunately, the trend of events in East Asia suggests we may yet see a repetition of the last Sino-Japanese conflict, only this time the US is unlikely to be on the winning side."
Friday, 18 March 2005
Topic: Science & Technology
A New Scientist
report entitled "Pay up, you are being watched
" describes a study which provides a clue as to why people behave altruistically.
[Researchers Terry Burnham] and Brian Hare pitted 96 volunteers against each other anonymously in games where they donate money or withhold it. Donating into a communal pot would yield the most money, but only if others donated too.
The researchers split the group into two. Half made their choices undisturbed at a computer screen, while the others were faced with a photo of Kismet - ostensibly not part of the experiment. The players who gazed at the cute robot gave 30 per cent more to the pot than the others. Burnham and Hare believe that at some subconscious level they were aware of being watched. Being seen to be generous might mean an increased chance of receiving gifts in future or less chance of punishment, they will report in Human Nature.
If true, this suggests that people who act altruistically may actually be doing so for deep-seated subconscious reasons, and not necessarily because they are consciously seeking favours in return.
This seems a reasonable postulate. People do not always act on purely rational grounds. The subconscious plays an important part. After all, isn't that how conscience works?
Friday, 4 March 2005
Land rights and libertarianism
Dan Sullivan has written an essay entitled "Are you a Real Libertarian, or a ROYAL Libertarian?
" which provides an interesting take on land and property rights from a libertarianism perspective.
Its basic premise is shown in the following excerpt.
We call ourselves the "party of principle," and we base property rights on the principle that everyone is entitled to the fruits of his labor. Land, however, is not the fruit of anyone's labor, and our system of land tenure is based not on labor, but on decrees of privilege issued from the state, called titles. In fact, the term "real estate" is Middle English (originally French) for "royal state." The "title" to land is the essence of the title of nobility, and the root of noble privilege.
When the state granted land titles to a fraction of the population, it gave that fraction devices with which to levy, and pocket, tolls on the fruits of the labor of others. Those without land privileges must either buy or rent those privileges from the people who received the grants or from their assignees. Thus the state titles enable large landowners to collect a transfer payment, or "free lunch" from the actual land users.
In other words, an individual's state-sanctioned right to land may amount to the denial of the right of others to use the land. This is not consistent with the principles of "real" libertarianism.
The essay focusses on property rights -- particularly on land -- but there are some larger issues involved here that is inherent with libertarianism.
One is the problem of distinguishing between natural rights from state-assigned rights. Libertarianism asserts that the individual should have the right to do what he wants free from state interference. However, when a right that an individual enjoys is actually assigned by the state -- as in the case of land title -- it becomes disingenuous to defend that right under the guise of libertarianism.
The problem is exacerbated when the individual's enjoyment of that right encroaches upon the right of others -- in the case of land, the right of others to use that land. This leads to a conundrum. The tendency for the interests of individuals to come into conflict when individuals insist upon their individual rights means that state intervention is often desirable to manage the exercise of those rights. In such situations, libertarianism -- insofar as it decries state intervention -- can become counter-productive.
Sullivan, nevertheless, tries to find an alternative through intervention by the community instead of the state.
Private communities can be built on explicit contracts (leases) with the citizens, can have internal democratic processes that are vastly superior to electoral democracy, can be far more flexible and free of state intervention, and can be downright profitable (even with trust investors pocketing a mere fraction of the rent). Most of all, dealing with investors is far more pleasant and self-affirming than dealing with politicians.
The problem with this view is that a state is to a large extent a community writ large. There comes a point in size where the distinction between community and state appears arbitrary.
Personally, I doubt that a strict adherence to the principles of libertarianism can provide a satisfactory answer.
Ultimately, I see the value of libertarianism in its emphasis on individual liberty. However, individual liberty is only one human need among many. Libertarianism cannot be an all-encompassing ideology. Libertarians who apply the ideology unswervingly ultimately do no favours to individuals in general.
Tuesday, 22 February 2005
Two-year-old gets engaged
People in modern societies take individual rights for granted. This was not the case in the past, and even in some parts of the world today.
According to the news report, "Toddler engaged to 40-year-old in Pakistan
", a two-year-old has been engaged to a 40-year-old man in Pakistan. This apparently happened as a result of a decision by local village leaders to settle a dispute between two families, with the engagement being part of the settlement. It seems that a complaint was subsequently registered against the village leaders and police were reportedly looking for them.
This is also reported to be the second such incident in that area of Pakistan. In an earlier incident, the leaders in another village had ordered the gang rape of a girl as a punishment for her brother.
It is really amazing that such medieval attitudes and practices can still be found in certain parts of the world. Insofar as such or similar practices were commonplace in most parts of the world centuries ago, it just goes to show how far modern societies and their legal systems have progressed.
Tuesday, 15 February 2005
Malaysia invokes Internal Security Act
According to the New Straits Times
, nine people, including a member of the National Registration Department (NRD), have been arrested under the Internal Security Act (ISA) for alleged involvement in the unlawful issuance of the government smart card or MyKad and identity card receipts.
The newspaper report said that seven of those arrested were Malaysians, one was an Indonesian and another a Hong Kong citizen. A detention order was issued against the Indonesian, who had permanent residence status, while the Hong Kong citizen had been deported.
in the newspaper, which reported on the NRD and the MyKad system and how illegal immigrants were getting counterfeit cards, also mentioned that the ISA was being invoked in the detention of NRD staff because the case "involved people overseas and it was necessary to sever links as well as protect them from possible danger". The "people overseas" may be referring to the Indonesian and Hong Kong citizen arrested. But I think the real concern is with the Indonesian government, with whom the issue of illegal workers is politically sensitive for Malaysia.
However, as has been said many times by various commentators, this tendency to invoke the ISA risks becoming an expedient that allows the government to circumvent the due process of the law and its inherent safeguards on individual rights.
Friday, 11 February 2005
Michael Lewis on Social Security privatisation
In a commentary entitled "Bush Offers Social Security Savers a Call Option
" in his Bloomberg column, Michael Lewis writes:
The hysterical reactions to President George W. Bush's proposal for private Social Security accounts are a little hard to understand. There's still no plan on the table and it's impossible to know exactly how much financial freedom Bush intends for Americans to enjoy -- how much new risk he plans to introduce into geriatric life.
Actually, the reaction is not that hard to understand once you realise that it is not the actual plan itself that people are against but the rationale for needing such a plan: The claims that Social Security is facing an impending crisis, needs a drastic fix and that private investments provide that fix. Many Americans, especially in the Democratic Party, have already rejected these claims, alleging that they are based on erroneous assumptions. Prof Brad DeLong, for example, criticises the proposal to privatise Social Security regularly on his blog
However, Lewis has good points to make about the consequences of Social Security privatisation.
The first social consequence will be to turn every American worker into a Wall Street customer... As a result of their own investment decisions, some old people will wind up with more to spend, and some with less. Anyone who winds up with more will of course be delighted, but what happens to the people who wind up with less?
What happens to the aged American on his way to the shuffleboard court who finds that he has, for 40 years, traded in and out of the U.S. stock market at precisely the wrong time, and has squandered a big chunk of his Social Security money?
In theory, he will suffer the consequences of his folly. In theory, he will be forced to sell his Florida condo, store his Viagra, and limp back to work. That's the whole point of the Bush plan: to force Americans to take responsibility for their retirement years. To reduce the average American's dependency on the federal government and increase his stake in the U.S. economy -- and thus, presumably, in capitalism. But in practice, do you believe that will happen?
I don't. Specifically, I don't believe that Americans will ever accept responsibility for their financial decisions.
And he may have a point. As Lewis points out, when things go wrong, Americans tend to sue, not accept responsibility for consequences.
The real effect of any plan that gives Americans the power to invest in the stock market is to grant Americans a free call option on the stock market. If the market rises, the enriched American retiree will congratulate himself on his own wise decisions. But if the stock market falls, or even if it merely stagnates, he'll do what he has to do to get his money back.
Which means that instead of ridding the US government of a liability, Social Security privatisation may potentially be transforming one form of liability into another one that the government is even less financially prepared for.
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