Showing posts with label Health. Show all posts
Showing posts with label Health. Show all posts

Thursday, November 19, 2009

Alcohol Protects "Men's Hearts"

Drinking alcohol every day cuts the risk of heart disease in men by more than a third, a major study suggests.

The Spanish research involving more than 15,500 men and 26,000 women found large quantities of alcohol could be even more beneficial for men.

Female drinkers did not benefit to the same extent, the study in Heart found.

Experts are critical, warning heavy drinking can increase the risk of other diseases, with alcohol responsible for 1.8 million deaths globally per year.

The study was conducted in Spain, a country with relatively high rates of alcohol consumption and low rates of coronary heart disease.

The research involved men and women aged between 29 and 69, who were asked to document their lifetime drinking habits and followed for 10 years.

Crucially the research team claim to have eliminated the "sick abstainers" risk by differentiating between those who had never drunk and those whom ill-health had forced to quit. This has been used in the past to explain fewer heart-related deaths among drinkers on the basis that those who are unhealthy to start with are less likely to drink.

Good cholesterol

The researchers from centres across Spain placed the participants into six categories - from never having drunk to drinking more than 90g of alcohol each day. This would be the equivalent of consuming about eight bottles of wine a week, or 28 pints of lager.

People should not be encouraged to drink more as a result of this research
Professor Martin McKee
London School of Hygiene and Tropical Medicine

For those drinking little - less than a shot of vodka a day for instance - the risk was reduced by 35%. And for those who drank anything from three shots to more than 11 shots each day, the risk worked out an average of 50% less.

The same benefits were not seen in women, who suffer fewer heart problems than men to start with. Researchers speculated this difference could be down to the fact that women process alcohol differently, and that female hormones protect against the disease in younger age groups.

The type of alcohol drunk did not seem to make a difference, but protection was greater for those drinking moderate to high amounts of varied drinks.

The exact mechanisms are as yet unclear, but it is known that alcohol helps to raise high-density lipoproteins, sometimes known as good cholesterol, which helps stop so-called bad cholesterol from building up in the arteries.

From:BBC.co.uk

Whoo--hoo! Yeah, and that's "men's hearts." Sadly...not our livers.

Monday, March 16, 2009

Vegeterian and Fish Diets Lower Cancer Risk

A vegetarian diet may help to protect against cancer, a UK study suggests.

Analysis of data from 52,700 men and women shows that those who did not eat meat had significantly fewer cancers overall than those who did.

But surprisingly, the researchers also found a higher rate of colorectal cancer - a disease linked with eating red meat - among the vegetarians.

Writing in the American Journal of Clinical Nutrition the team said the findings were worth looking into.

Although it is widely recommended that people eat five portions of fruit and vegetables a day to reduce their risk of cancer and other diseases, there is very little evidence looking specifically at a vegetarian diet.

It suggests there might be some reduction in cancers in vegetarians and fish-eaters and we need to look carefully at that
Professor Tim Key, study leader

In the latest study, researchers looked at men and women aged 20 to 89 recruited in the UK in the 1990s.

They divided participants into meat-eaters, fish-eaters, vegetarians and vegans.

During follow-up there were fewer cancers than would be expected in the general population - probably because they were a healthier than average group of people.

But there was a significantly lower incidence of all cancers among the fish-eaters and vegetarians compared with the meat eaters.

'Confusion'

For colorectal cancer, however that trend was reversed with vegetarians having a significantly higher incidence of the condition than the other groups.

The researchers were surprised at the finding, which contradicts previous evidence linking eating lots of red meat with the disease.

Study leader Professor Tim Key, a Cancer Research UK epidemiologist at the University of Oxford, said no previous study had looked at diet in this way and there had been a lot of confusion about the issue.

"It's interesting - it suggests there might be some reduction in cancers in vegetarians and fish-eaters and we need to look carefully at that."

He added: "It doesn't support the idea that vegetarians would have lower rates of colorectal cancer and I think it means we need to think more carefully about how meat fits into it."

More work is needed to unpick the links between diet and cancer but such studies are incredibly hard to do, he said.

Dr Joanne Lunn, a senior nutrition scientist at the British Nutrition Foundation, said the findings highlight the fact that cancer is a complex disease and many different lifestyle factors play a part in determining a person's risk.

"An interesting observation was that the vegetarians had a higher rate of colorectal cancer than the meat-eaters.

"When you look at the detail of their diets, the meat-eaters, to which the vegetarians in this group were compared, are eating only moderate amounts of meat each day - well within the recommendations.

"Both groups are also just about meeting the recommendation to eat at least 5 portions of fruits and vegetables a day."

from bbc.uk.co

Thursday, November 13, 2008

'Love handles' raise death risk

Carrying extra fat around your middle dramatically increases your risk of early death, even if your overall weight is normal, say researchers.

A study of almost 360,000 people from nine European countries found waist size a "powerful indicator" of risk.

Each extra 2ins (5cm) raised the chance of early death by between 13% and 17%.

The New England Journal of Medicine study stressed GPs should regularly measure patients' waists as a cheap and easy way to assess health.

It costs virtually nothing to measure your hip and waist size
Professor Elio Riboli
Imperial College London

The link between waist fat and health problems has been established for some time, but the sheer size of the study gives scientists a far more accurate picture.

The researchers, including some from Imperial College London, followed the volunteers, who were an average of 51 years old at the start of the study, for the next 10 years, during which time 14,723 of them died.

The standard measure of obesity, body mass index (BMI) remained a reasonable predictor of health problems, with those with a high reading more likely to die from cardiovascular disease or cancer.

However, the 'hip/waist ratio', a number produced by dividing the waist size by the hip measurement, and just the waist measurement on its own, were both good ways of sorting out those at highest risk.

Waist measurement
A thickening girth can be a sign of type 2 diabetes

Some people who had a completely normal BMI score, but a larger than average waist, were at significantly higher risk of early death.

At the extremes, men with waists exceeding 47ins (119cm) had a doubled rate of death compared with those with waists under 31.5ins (80cm), and a similar statistic was found when women with waists over 39ins (99cm) were compared to those under 25.5ins (64.7cm).

An increase in risk of death could be plotted every time the belt was let out by another two inches - for two people with the same BMI, every additional 2ins (5cm) on their waistband added up to a 17% increase in risk for men, and 13% for women.

Professor Elio Riboli, from Imperial College London, said: "We were surprised to see the waist size having such a powerful effect on people's health and premature death.

"There aren't many simple individual characteristics that can increase a person's risk of premature death to this extent, independently from smoking and drinking."

He added: "The good news is that you don't need to take an expensive test and wait ages for the result to assess this aspect of your health - it costs virtually nothing to measure your hip and waist size."

Fat message

The reason for the link is not entirely clear, but another researcher, Dr Tobias Pischon, from the German Institute of Human Nutrition at Potsdam-Rehbrucke, said that abdominal fat was not like other fat reserves, but could directly influence the development of chronic disease by releasing "messenger substances".

BODY MASS INDEX
Calculated by dividing weight in kilograms by height in metres squared
Normal: 18.5 - 24.9
Overweight: 25 - 29.9
Obese: Above 30

A British Heart Foundation spokesman welcomed the findings, saying they supported previous research which found the risk of heart disease to be higher when fat was concentrated around the waist area.

"It is important a variety of measurements are used to assess body weight and shape. - as well as BMI (Body Mass Index), waist circumference and waist-hip ratio can help to provide a better assessment of health risk.

"If you tend to gather weight around your middle, increasing the amount of activity you do and watching what you eat will help to reduce your risk of heart disease and of dying early."

Ok, first the headline is pricelss. What mirth! But seriously, this was a little surprising. Ok not really, I mean we all know that being overwieght is dangerous to your health. What I found surprising was that each 2 additional inches on the waist (over 31.5 apparently) adds a 17% risk of death. So, if you are a size 42 waist (as a man) you have doubled your risk of early death...That statistic is a bit shocking. and really, really bad for most Americans. So think about the next time you opt for the super sized Baconator, which alone probably increases you risk of death by a notable rate.


From BBC.com

Wednesday, April 16, 2008

Vitamins 'may shorten your life'

Research has suggested vitamin supplements do not extend life and could even lead to a premature death.

A review of 67 studies found "no convincing evidence" that antioxidant supplements cut the risk of dying.

Scientists at Copenhagen University said vitamins A and E could interfere with the body's natural defences.

"Even more, beta-carotene, vitamin A, and vitamin E seem to increase mortality," according to the review by the respected Cochrane Collaboration.

The research involved selecting various studies from 817 on beta-carotene, vitamin A, vitamin C, vitamin E, and selenium which the team felt were the most likely to fairly reflect the benefits of the supplements.

It has been thought that these supplements may be able to prevent damage to the body's tissues called "oxidative stress" by eliminating the molecules called "free radicals" which are said to cause it.

This damage has been implicated in several major diseases including cancer and heart disease.

'Just eat well'

The trials involved 233,000 people who were either sick or were healthy and taking supplements for disease prevention.


VITAL VITAMIN FACTS
Vitamin A: Found in? Oily fish, eggs and liver; Good for? Thought to boost immune system, and help skin, sight and sperm formation
Vitamin C: Found in? Many fruit and vegetables; Good for? Helps heal wounds and assists the body in absorbing iron, may boost the immune system
Vitamin E: Found in? Vegetable oils, seeds and nuts; Good for? May help boost circulation and keep elderly people active
Beta-carotene: Found in? Vegetables that are reddish-orange in colour; Good for? May boost vision and keep the mind sharp
Selenium: Found in? Butter, nuts, liver and fish; Good for? May boost the immune system
How many take vitamins? Between 10-20% of people in the West
How much is the global market worth? About $2.5bn (£1.3bn)

After various factors were taken into account and a further 20 studies excluded, the researchers linked vitamin A supplements to a 16% increased risk of dying, beta-carotene to a 7% increased risk and vitamin E to a 4% increased risk.

Vitamin C did not appear to have any effect one way or the other, and the team said more work was needed into this supplement - as well as into selenium.

In conclusion, "we found no evidence to support antioxidant supplements for primary or secondary prevention," they said.

It was unclear exactly why the supplements could have this effect, but the team speculated that they could interfere with how the body works: beta-carotene, for instance, is thought to change the way a body uses fats.

The Department of Health said people should try to get the vitamins they need from their diet, and avoid taking large doses of supplements - a market which is worth over £330m in the UK.

"There is a need to exercise caution in the use of high doses of purified supplements of vitamins, including antioxidant vitamins, and minerals," a spokesperson said.

"Their impact on long-term health may not have been fully established and they cannot be assumed to be without risk."

A 'stitch-up'

But the Health Supplements Information Service, which is funded by the association which represents those who sell supplements, said many people were simply not able to get everything they needed from their diet.

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Dr Rosemary Leonard's advice on vitamins

"For the millions who are not able to do that, vitamins can be a useful supplement and they should not stop taking them," said spokeswoman Pamela Mason.

Another nutritionist who has formulated supplements described the review as a "stitch-up" and only reviewed studies which examined the effect they had on reducing mortality, rather than other advantages.

"Antioxidants are not meant to be magic bullets and should not be expected to undo a lifetime of unhealthy habits," said Patrick Holford.

"But when used properly, in combination with eating a healthy diet full of fruit and vegetables, getting plenty of exercise and not smoking, antioxidant supplements can play an important role in maintaining and promoting overall health."


Bad news for all of those people living under the illusion that a kiwi-strawberry flavored vitamin water and a handful of centrum are doing something to improve their health. Not that I don't believe that vitamins and supplements are useful; in fact, I think they can be really helpful for a number of conditions and ailments, especially in the short term. The worrying thing is that many Americans falsely believe that they are getting all the nutrients they need from "enriched" processed foods and/or vitamins. This reminds me of another article I read recently about truth in advertising in the food industry. For instance, "whole grain" doesn't mean whole wheat, but most consumers don't recognize the difference. Many studies have shown that whole grain foods like whole wheat or whole rye breads have lots of health benefits (protection against cancers and heart disease, etc.). But most breads and similar products that say "whole grain" contain some small portion of one of these whole grains while the rest is just enriched wheat flour, which usually has all the nutrients stripped out during processing but has some vitamins added back in. These products are not really any healthier than other processed products, but they are designed to make consumers think they are. Just something to consider. You can't get around the fact that humans need to eat healthy to be healthy--you can't balance out a Baconator with a couple of vitamins.