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Dangers of soy
ป้ายกำกับ: Health news
Bach Flower Remedies to the rescue
When we visit a sick friend or relative in the hospital, our first impulse is to bring flowers. At some level, we sense that there's something about fresh flowers that will help the healing process. Bach Flower Remedies are a popular alternative medicine based on the healing powers of flowers.
ป้ายกำกับ: Health news
Lack of time, offputting PE lessons, social pressure ... why women face a fitness crisis
· About 80% do too little exercise, report says
· Girls 'encouraged to be thin rather than fit'
Women's fitness is in crisis in the UK, with fewer than one in five doing enough exercise to be healthy, a report will reveal today, prompting Gordon Brown to call for a cultural change to transform girls' attitudes to sport.
Social pressures which portray sport as unfeminine and encourage girls to be thin rather than fit are an important barrier preventing girls and women from taking part in exercise, according to the study by the Women's Sport and Fitness Foundation.
Negative experiences of sport in school and low body confidence also put women off exercise, the research found.
The prime minister, in a recorded address at the report's launch today, will warn of a "critical under-representation of women and girls in sport" at all levels, and will urge "a cultural change that allows girls to see sport and physical activity as aspirational".
"Sport needs to change so that it becomes as much a place for women and girls as it is for men and boys," he will say, telling sports bodies to "work harder to understand women's lives".
A failure to reverse the decline in women's fitness will have serious health implications, ranging from obesity and heart disease to depression and low self-esteem, Brown, a former rugby player and keen sports fan, will tell a conference on women's sport, Raising the Game, at Arsenal's Emirates Stadium.
The prime minister will also attack the "critical lack of investment and profile" at the elite end of women's sport, with no professionally paid women in team sport in the UK.
Today's report, It's Time, analysed the latest studies of sports participation, one involving 350,000 people, and commissioned original research to identify the state of women's fitness in Britain.
It found that 80% of women are doing too little exercise to benefit their health. Government guidelines say five 30-minute sessions of moderate activity a week are needed to produce health benefits, with sports bodies charged with achieving three of the five.
While the country as a whole is failing to meet the targets, women do worse than men, particularly in some age groups. Among 16- to 24-year-olds, for example, women are half as active as men, and exercise levels are even worse for low income and minority ethnic women.
The situation is worsening, according to the study. If trends continue, there will be one million fewer women exercising by 2017.
The foundation's chief executive, Sue Tibballs, said: "To put the challenge into perspective, there has been almost no change in the level of women's physical activity in the UK for the past 20 years. The forecasts show that the situation is getting worse, which points to a real crisis in women's sport and fitness."
The foundation argues that the longer-term consequences of the crisis in activity among women and girls will include greater obesity levels, physical and mental health issues and increased crime and social problems over the next 10 years unless urgent action is taken.
It calls for a "national, joined-up strategy" to increase women's participation in sport, involving sport, health and education government departments, as well as business and the media. While time, money and people to be active with all play a part in limiting women's access to sport, "very specific" issues involving the body image and confidence of women and girls must be recognised and addressed, says the study.
Girls and women feel "at best, pretty ambivalent about sport," Tibballs said.
"When you think that the highest profile women in sport are the Wags, is it so surprising that girls have these attitudes? Being active and sporty is not an aspirational place for young women to be."
The report finds that sport is still seen by some as "unfeminine", with thinness often coming above healthiness in female priorities. A quarter of women surveyed for the study agreed with the statement "I hate the way I look when I exercise or play sport" and a third of 18- to 24-year-olds and nearly half of 25- to 34-year-olds feel under greater pressure to be thin than to be healthy.
School PE lessons also appear to have far-reaching negative consequences: 23% of women say PE put them off sport and two in five girls feel self-conscious about their bodies in PE lessons.
The aim should be to encourage women to be healthy rather than thin, Tibballs said. "This is not about body size, but through being active you can have a positive impact on those body image issues that are so crippling to girls' self-esteem.
"Charging around and getting sweaty and hot and feeling good about it is a very liberating thing for women to do in these body-conscious times."
While urging the government to develop a national strategy, the foundation proposes changes including a focus on the baby boomer generation of women - ensuring they keep active as they age - and on current schoolgirls in an effort to ensure they stay active after leaving school.
It also recommends help for women at other life stages, such as new motherhood. Proposals include free daytime membership of gyms and group buggy pushes led by fitness trainers for mothers of small babies.
The report also calls for better understanding of how women participate in sport and exercise, noting that twice as many men play competitive sports as women and almost six in 10 women prefer to exercise than to play sport.
ป้ายกำกับ: Health news
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Follow this eat-right plan to fortify your immune system
When cold and flu season comes around, many people head to their medicine cabinets in search of relief. But a trip to the kitchen may be the smarter move.
The nutrients that lend fruits and vegetables their colors serve as antioxidants that promote immune function.
"Nutrition plays an important part in maintaining immune function," explains George L. Blackburn, M.D., Ph.D., associate director of the division of nutrition at Harvard Medical School in Boston, Massachusetts. "Insufficiency in one or more essential nutrients may prevent the immune system from functioning at its peak."
The immune system consists of a finely orchestrated, complex collection of tissues and cells that protect your body from allergens, bacteria, viruses, and other potentially harmful organisms, collectively known as antigens. Skin and the membranes that line entrances to the body -- nasal passages, eyes, and respiratory and digestive tracts -- are the first line of defense, providing a physical barrier against invaders. Internally, specialized white blood cells fight antigens that make it past the skin: T-lymphocytes continuously patrol the body in search of antigens; B-lymphocytes manufacture antibodies, special blood proteins that neutralize or destroy germs; and neutrophils and macrophages scavenge antigens from the blood for delivery to the lymphatic system, which disposes of them. To work smoothly, these cells depend on you keeping your body in top shape.
"There's no question the immune system fundamentally is influenced by overall health -- and a balanced diet is key," says David Katz, M.D., M.P.H., director of the Yale Prevention Research Center in New Haven, Connecticut. "Not only are essential nutrients critical for the production and maintenance of key germ-fighting cells in the immune system, but a balanced diet also has a strong effect on vascular function, and the immune system is dependent on blood flow," Katz says. The bloodstream is the route along which infection-fighting cells travel throughout the body to where they're needed.
Given the complexity of the immune system, there isn't one specific food that will magically make you repel cold germs and flu viruses. Instead, eating a healthful, balanced diet is your best investment in immunity.CookingLight.com: How nutritional remedies can help manage cold symptoms
Fill your plate with fruits and vegetables
The vitamins (especially A and C) and the phytochemicals that lend fruits and vegetables their colors serve as antioxidants that promote immune function, says Charles Stephensen, Ph.D., a research scientist with the usda's Western Human Nutrition Research Center at the University of California, Davis. "These nutrients help ensure that lymphocytes can divide and reproduce properly in response to a virus and that the neutrophils and macrophages that engulf and kill invading bacteria can do their job," Stephensen says.
What to do: Eat five to nine servings of fruits and vegetables per day. To maximize the variety of vitamins, minerals, and antioxidants, aim to consume two different colors of vegetables and fruits with each meal, Blackburn suggests. "Cover two-thirds of your plate with vegetables, fruit, whole grains, and beans, and one-third with lean protein," he says.
The amino acids that are found in protein form the building blocks of all the body's cells -- including the cells that power your immune system. If you don't consume enough protein, you'll manufacture fewer white blood cells to combat antigens. "One of the ways immune cells fight against pathogens is by increasing their numbers," says Simin Nikbin Meydani, Ph.D., associate director of the Jean Mayer Research Center on Aging at Tufts University in Boston, Massachusetts. "To increase immune cell proliferation, you need protein and amino acids."
What to do: Consume 0.8 to 1 gram of protein per kilogram (kg) of your body weight. That means if you weigh 130 pounds, which equals about 59kg, consume at least 47 grams of protein per day. But remember that quality counts: To avoid saturated fat, choose three- to four-ounce portions of lean protein such as fish, seafood, poultry (without the skin), eggs, lentils, beans, and soy products.
High-fat diets appear to impair the immune system by decreasing the function of T-lymphocytes.
Reducing fat, on the other hand, can boost immune function by enhancing T-lymphocyte function. However, the type of fat you consume is equally important as the amount. Trans fats (found in margarines and many commercial baked goods) can contribute to chronic low-grade inflammation in the body. "The immune system can become tied up dealing with inflammation -- and the damage to cells and tissues that results -- rather than defending the body," Katz says.
What to do: Limit your total fat intake to 30 percent of daily calories, with five to 10 percent from saturated fats. For the remaining 20 to 25 percent, look for sources of unsaturated fats, such as canola oil, olive oil, nuts, avocados, and seeds. And increase your intake of omega-3 fatty acids (from fatty fish like salmon, halibut, and sardines), which help fight inflammation and free your immune system to defend against antigens.
Green tea is a rich source of a type of antioxidant called a catechin, and preliminary research has found that a specific catechin -- epigallocatechin gallate (egcg) -- may give the beverage antigen-fighting abilities. When researchers at the University of Sherbrooke in Canada added green tea to lab samples of the adenovirus (one of many viruses that causes colds), they discovered that egcg inhibited the virus' ability to replicate. Similarly, researchers in South Korea found that egcg can also stop the influenza virus from replicating. While these studies were conducted in petri dishes instead of human subjects, some researchers believe you can reasonably bank on green tea's benefits -- particularly when it's consumed in place of colas or other sugary beverages with little nutritional benefit. "Green tea catechins can improve lymphocyte responses and seem to have anti-inflammatory effects," Stephensen says.
What to do: Trade at least one cup of coffee each day for green tea. To derive the optimal amounts of catechins from your tea, let the bag steep for at least three minutes in hot water.
Eat enough -- yet not too many or too few -- calories per day. "Considerable evidence shows crash dieting, anorexia, or nutrient deficiencies increase a person's susceptibility to infections, but overconsumption of calories can also have harmful effects on cell production in the immune system," Meydani says. "This could be because overconsumption of calories leads to increased production of compounds called prostaglandins, which have a suppressive effect on T-lymphocyte cell production." Fewer T-cells patrolling the body increases the chances of an antigen taking hold.
What to do: To find the proper number of calories for you, go to http://www.mypyramid.gov/, which makes recommendations based on age, gender, and activity level.
Although the researchers we spoke with panned most supplements, they all agreed that a multivitamin is well worth taking. If you have even a marginal deficiency of certain nutrients --particularly the B vitamins, A, C, E, selenium, iron, and zinc -- your immune system's function could be impaired. "This can happen without seeing any obvious signs of deficiency -- until you become sick with a virus or bacterial infection," Meydani says.
What to do: Choose a multivitamin specifically formulated for your gender or age. For example, multivitamins made for men and post-menopausal women contain less iron than those made for younger women. And always look for the United States Pharmacopeia seal, says Douglas Heimburger, M.D., a professor of nutrition sciences and medicine at the University of Alabama at Birmingham. "It tells you that certain pharmaceutical standards have been met and proven," Heimburger says.
A yogurt or kefir drink per day might help keep infections at bay. That's because these foods contain probiotics, bacteria that stimulate immunity cells in the gastrointestinal tract. "Normal, healthy bacteria that colonize the GI tract help you resist bad bacteria and detoxify harmful substances," explains Susanna Cunningham-Rundles, Ph.D., a professor of immunology at Weill Medical College of Cornell University in New York City. In addition to their protective effect in the GI tract, probiotics also may help stimulate immune-cell production system-wide. In a recent study of 33 women from the University of Vienna, Austria, those who ate ordinary yogurt daily for two weeks raised their T-lymphocyte cell count by nearly 30 percent.
What to do: Look for yogurt or kefir that contains "live active cultures," indicating helpful bacteria.CookingLight.com: Add live cultures to your diet with these tips and recipes
"The immune system's cells don't function normally when a person is overweight or has high levels of cholesterol and triglycerides," says Gabriel Fernandes, Ph.D., a professor of medicine at the University of Texas Health Science Center at San Antonio. "Immune cells are not able to recognize bacteria or viruses and destroy them," Fernandes says. Along with diet, exercise is key to shedding extra pounds.
What to do: "Increase your physical activity from 30 minutes a day to 60 to burn more calories," Fernandes says. In a yearlong study of 550 men and women, researchers from the University of South Carolina found those who exercised moderately were 25 percent less likely to develop a cold compared with those who rarely exercised. (The subjects simply walked at a brisk pace.) As with diet, moderation is critical; too much exercise or exercising to the point of exhaustion can boost the body's production of adrenaline and cortisol, two hormones that temporarily suppress immune function.
ป้ายกำกับ: Health care tip
Magnolia bark takes bite out of bad breath
Most bad breath occurs when bacteria in the mouth break down proteins, producing foul-smelling sulfur compounds. But many anti-bacterial agents cause nasty side effects like tooth staining, making them impractical for oral care.
Magnolia bark extract -- a traditional Chinese medicine used to treat fever, headache and stress -- has proven effective against germs that cause ulcers, and recent studies have shown it has low toxicity and few side effects.
Scientists at chewing gum maker Wm Wrigley Jr Co wanted to see if it could kill halitosis-causing bacteria, and if it could be used in a gum or mint.
Researchers Minmin Tan and colleagues, reporting in the Journal of Agricultural and Food Chemistry, tested magnolia bark's germ-killing ability in a Wrigley lab.
They found it highly effective against three types of oral microorganisms, killing 99.9 percent of bad breath bacteria within five minutes.
Tests on nine healthy Wrigley employees who chewed mints and gum containing the bark after lunch produced less dramatic but still potent effects.
The gum didn't work as well, reducing oral bacteria by 43 percent within 40 minutes, compared with an 18 percent reduction in gum with no extract.
The extract also helped kill a group of bacteria that causes tooth decay.
"Because bacteria are the major cause of breath odor, products containing effective germ-kill compounds will provide a long-lasting reduction of oral malodor," the researchers wrote.
But don't expect it in stores any time soon.
"It's a long way from scientific research to a commercializable product, and there's a lot of perils and pitfalls along the way," said Wrigley spokesman Chris Perille.
ป้ายกำกับ: Health news
Magnolia could sweeten the breath
The extract, already used in the treatment of various disorders, may also be effective against the bacteria which cause tooth decay.
Researchers at the Wrigley Company carried out tests on nine volunteers.
Writing in the Journal of Agricultural and Food Chemistry, they found mints laced with magnolia killed 20 times more bacteria than mints without.
After half an hour, the magnolia mint had killed more than 60% of the bacteria, compared to just 3.6% among those who had consumed a normal mint.
Bacteria killed included those responsible for bad breath problems such as halitosis, as well as Streptococcus mutans, blamed for tooth decay.
"Bad breath or halitosis is a major social and psychological problem that affects the majority of the general population," the researchers wrote.
"Magnolia bark extract demonstrated a significant anti-bacterial activity against organisms responsible for oral malodour and can be incorporated into mints and chewing gum for improved breath freshening benefits."
Advocates of magnolia have long praised its properties, claiming it can alleviate the symptoms of conditions ranging from rheumatism to asthma.
Dr Nigel Carter, chief executive of the British Dental Health Foundation said the results of the study looked "very promising".
"Standard mints and mouthwashes only really mask bad breath temporarily and while chewing gum can be effective due to its ability to increase the flow of saliva, this research might be another step forward in it developing an even greater role in good oral health practice."
But he stressed that brushing teeth twice a day remained as important as ever for good oral health
ป้ายกำกับ: Health news



