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Tuesday, February 12, 2013

Vitamins do not reduce men's risk of heart trouble: study

Fellowmen, take note!
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Posted: 06 November 2012


Bottles of Vitamins displayed at a US store. (AFP/Getty Images/Justin Sullivan)
WASHINGTON: Contrary to popular belief, daily use of vitamin supplements does not reduce risk of cardiovascular disease among men middle aged and older, a study released Monday says.

It was published in the Journal of the American Medical Association and followed 14,641 men -- doctors working in the US -- whose average age was 64 at the start of the study in 1998 and monitored them for about 11 years.

Half of them, chosen at random, took multivitamins and the other half a placebo, said the authors. They called their study the most extensive ever done on the usefulness of multivitamins for prevention of chronic disease.

In the period under study, 2,757, or 18.8%, died of a cardiovascular event such as a heart attack or stroke. These included 1,345 taking vitamins and 1,412 taking the placebo.

The researchers from Harvard University concluded that taking multivitamins made no difference when it came to warding off cardiovascular illness or stroke.

The lower number of deaths among vitamin-takers was not statistically significant, they said.

In an accompanying editorial, Eva Lonn of McMaster University and Hamilton General Hospital in Ontario, Canada, wrote that "robust data from multiple trials clearly confirm that (cardiovascular disease) cannot be prevented or treated with vitamins."

"Nonetheless, many people with heart disease risk factors or previous CVD events lead sedentary lifestyles, eat processed or fast foods, continue to smoke, and stop taking lifesaving prescribed medications, but purchase and regularly use vitamins and other dietary supplements, in the hope that this approach will prevent a future myocardial infarction or stroke," she wrote.

"This distraction from effective CVD prevention is the main hazard of using vitamins and other unproven supplements," Lonn added.

- AFP/al


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Taken from ChannelNewsAsia.com; source article is below:
Vitamins do not reduce men's risk of heart trouble: study


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Monday, December 19, 2011

One in five Americans has hearing loss

Perhaps this is genes-based... would yours be surviving the hard times?
Fathers, take note: your best half is more prone to this phenomenon.
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Posted: 15 November 2011


Hearing aid (AFP/William West)
WASHINGTON: About one in five Americans age 12 and over suffers from hearing loss in at least one ear that is severe enough to interfere with daily communication, US researchers said Monday.

The estimate is the first to cover the entire United States instead of select populations according to location or age, said the study authors from Johns Hopkins University.

"I couldn't find a simple number of how common hearing loss is in the US," said lead author Frank Lin, an assistant professor in the department of otolaryngology. "So we decided to develop our own."

The findings, published in the November 14 issue of the Archives of Internal Medicine, a publication of the Journal of the American Medical Association, are higher than previous estimates of 21 to 29 million people with hearing loss.

The researchers took data from the National Health and Nutritional Examination Surveys (NHANES), which has tracked Americans' health since 1971, and analyzed data from just over 7,000 hearing tests between 2001 and 2008.

Forty-eight million people, or 20.3 percent of people 12 and over in the United States, have hearing loss in at least one ear; while 30 million, or 12.7 percent of the population, has it in both ears, they found.

The researchers defined hearing loss as being unable to hear speech sounds of 25 decibels or less, which is the World Health Organization (WHO) definition for hearing loss.

Hearing loss becomes more frequent as people age, but the researchers found that it tended to happen less often in women than in men, and was also less frequent in blacks than whites.

Researchers are not sure why, but they suggested that the potential protective effects of the female hormone estrogen and the skin pigment melanin should be investigated as potential reasons.

According to the WHO, about 278 million people worldwide suffer from moderate to profound hearing impairment, or about four percent of the world population.

Hearing loss can be caused by a variety of factors, including infectious disease, loud noises, injury and simple aging. About half of all cases are preventable through prevention and early diagnosis, the WHO said.

-AFP/pn



Taken from ChannelNewsAsia.com; source article is below:
One in five Americans has hearing loss
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Thursday, November 24, 2011

Dud in bed but a dude at home for the Pill women

Posted: 12 October 2011

contraceptives
PARIS: Women who take the Pill tend to choose as partners men who are less attractive and worse in bed but a sounder bet for a long-term relationship, according to an unusual study published on Tuesday.

Probing the effect of contraceptive hormones on mating choice, researchers questioned 2,519 women in the United States, Czech Republic, Britain and Canada who had had at least one child.

The volunteers were asked to rate their relationship for general satisfaction and sexual pleasure and the attractiveness of their partner or, retrospectively, of their ex.

Oral contraception had been used by 1,005 women when they met their partner, while 1,514 had used no form of hormonal birth control at the first encounter.

"Our results show some positive and negative consequences of using the Pill when a woman meets her partner," said Craig Roberts of Stirling University, Scotland, who led the investigation.

"Such women may, on average, be less satisfied with the sexual aspects of their relationship but more so with non-sexual aspects. Overall, women who met their partner on the Pill had longer relationships -- by two years on average -- and were less likely to separate."

Roberts suspects the Pill skews the sub-conscious "chemistry" by which a woman makes a mating choice.

Previously, he found that using oral contraceptives altered women's preferences for men's body odour.

When they didn't take the Pill, women were subjected to the strong hormonal swings of the menstrual cycle.

During ovulation, they unwittingly preferred the smell of men who were genetically dissimilar.

The evolutionary explanation for this is that babies that are born from genetically dissimilar couples tend to be healthier and have a better chance of survival.

But when women took the Pill, they preferred the smell of genetically similar men, Roberts found in this earlier research.

This was because the normal hormonal swings of the menstrual cycle evened out under the effect of the contraception.

The hormone levels typically reflected the non-fertile phase of the menstrual cycle, when women "are more attracted to men who appear more caring and reliable -- good dads," said Roberts.

Although such men are a better choice for long-term partnerships, the risk of a relationship breakdown is still there.

"Women who used oral contraception when they met their partner tended to find him less attractive, engaged in compliant sex and rejected sexual advances more frequently as the relationship progressed, and were more likely to initiate separation if it occurred," the study notes bleakly.

The new research gives an important statistical push to the theory of sexual chemistry but also raises a dilemma.

Should a woman go for Mr. Hunk or Mr. Nice?

To women who are mistrustful of what their body is telling them, going off the Pill and using a condom could help provide the answer, suggests Roberts.

"Choosing a non-hormonal barrier method of contraception for a few months before getting married might be one way for a woman to check or reassure herself that she's still attracted to her partner," he says.

The volunteers for the study were recruited through personal contact, social networking sites and advertising on pregnancy and parenthood forum websites. Of the 2,519 women, 1,761 women were still in a relationship with the biological father of their first child.

-AFP/vl



Taken from ChannelNewsAsia.com; source article is below:
Dud in bed but a dude at home for the Pill women

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