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News on Health & Science

Alleviating and treating ailments Through recommend supplements

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Many practitioners of complementary medicine recommend supplements for a wide range of health problems affecting virtually every body system. For most of these conditions, conventional physicians would be more likely to prescribe drugs, though they might treat some disorders with supplements. For example, iron may be prescribed for some types of anemia, vitamin A (in the drug isotretinoin, or Accutane) for severe acne, and high doses of the B vitamin niacin for reducing high cholesterol levels.

In this tool, certain vitamins and minerals are suggested for the treatment of specific ailments. However, the use of nutritional supplements as remedies, especially for serious conditions, is controversial. Most doctors practicing conventional medicine are skeptical of their efficacy and believe it is sometimes dangerous to rely on them. But based on published data and their clinical observations, nutritionally oriented physicians and practitioners think the use of these supplements is justified — and that to wait years for unequivocal proof to appear would be wasting valuable time. Until there is clearer, more consistent evidence available, you should be careful about depending on nutritional supplements alone to treat an ailment or injury.

For thousands of years, however, various cultures have employed herbs for soothing, relieving, or even curing many common health problems, a fact not ignored by medical science. The pharmaceutical industry, after all, arose as a consequence of people using herbs as medicine. Recent studies suggest that a number of the claims made for herbs have validity, and the pharmacological actions of the herbs covered in this book are often well documented by clinical studies as well as historical practice. In Europe, a number of herbal remedies, including

St. John’s wort, ginkgo biloba, and saw palmetto, now are accepted and prescribed as medications for treating disorders such as allergies, depression, impotence, and even heart disease. Of course, even herbs and other supplements with proven therapeutic effects should be used judiciously for treating an ailment.

What supplements won’t do
Despite the many promising benefits that supplements offer, it’s important to note their limits — and to question some of the extravagant claims currently being made for them.

As the word itself suggests, supplements are not meant to replace the nutrients available from foods. Supplements will never make up for a poor diet: They can’t counteract a high intake of saturated fat (which is linked to an increased risk of heart disease and cancer), and they can’t replace every nutrient found in food groups that you ignore. Also, although scientists have isolated and extracted a number of disease-fighting phytochemical compounds from fruits, vegetables, and other foods, there may be many others that are undiscovered — and ones you can get only from foods. In addition, some of the known compounds may work only in combination with others in various foods, rather than as single isolated ingredients in supplement form.

Supplements won’t compensate for habits known to contribute to ill health, such as smoking or a lack of exercise. Optimal health requires a wholesome lifestyle — particularly if, as people get older, they are intent on aging well.

Although some of the benefits ascribed to supplements are unproved but plausible, other claims are far-fetched. Weight-loss preparations are the leading example. Though they’re extremely popular, it’s questionable whether any of them can help you shed pounds without the right food choices and regular exercise. Products that claim to “burn fat” won’t burn enough on their own for significant weight loss.

Similarly, claims of boosting performance, whether physical or mental, are difficult to prove — and any “enhancement” will be a limited one at best in a healthy person. Though a supplement may improve mental functioning in someone experiencing mild to severe episodes of memory loss, it may have a negligible effect on the memory or concentration of most adults. Likewise, a supplement shown to combat fatigue isn’t going to turn the average jogger into an endurance athlete. Nor is it clear that “aphrodisiac” supplements are effective for enhancing sexual performance if you aren’t suffering from some form of sexual dysfunction.

No supplements have been found to cure any serious diseases — including cancer, heart disease, diabetes, or AIDS. The right supplement, however, may help improve a chronic condition and relieve symptoms such as pain or inflammation. But first you need to consult a health professional for treatment.

Source:Your Guide to
Vitamins, Minerals, and Herbs

Categories
Positive thinking

Hand In Hand With Nature

Healing Gardens
Time spent in nature’s embrace is a soothing reminder of the fact that we also are products of the natural world‘s ingenuity. We feel at home in a quiet forest and are comforted by the pounding surf of the seaside. In both the sunny meadow and the shaded waterfall’s grotto, stress and tension we have long retained melts away. Finding opportunities to reconnect with nature to enjoy its healing benefits can be difficult, however. Planting and tending a garden allows us to spend time with Mother Nature in a very personal and hands-on way. We work in tandem with nature while gardening-honoring the seasons, participating in the life cycle of various organisms, experiencing the unique biorhythms of our environments, and transcending all that divides us from the natural world. As we interact with the soil, we are free to be ourselves and reflect upon meditative topics. Fresh air invigorates us, while our visceral connection to the earth grounds us.

Though you may plant a garden to grow food or herbs, or for the pleasure of seeing fresh flowers in bloom, you will likely discover that the time you spend working in your plot feels somehow more significant than many of the seemingly more important tasks you perform each day. Whether your garden can be measured in feet or is a collection of plants in pots, tending it can be a highly spiritual experience. You, by necessity, develop a closer relationship with the soil, seeds, water, and sunlight. Nurturing just a single plant means cultivating a deeper understanding of the mechanisms that permit it to thrive. A true healing garden is simply one where you feel comfortable plunging your hands into the earth, lingering over seedlings and plants to observe their growth. And yes, even caressing and talking to plants. Creating beauty through the creative use of space, and giving yourself over to awe when you realize that you have worked hand in hand with nature to give birth to som! ething, is truly wonderful.

The partnership that is formed when you collaborate with Mother Nature through gardening is wonderful in that it provides you with so many opportunities to be outdoors. You will be reminded of not only your connection to the earth but also of your unique gifts that allow you to give back to the earth.

Source:Daily Om

Categories
News on Health & Science

Why is the heart pear-shaped?

T.V. Jayan explains, with the help of a new study:  It’s often been said that there is no engineer quite like Mother Nature. A living organism ” with all its parts that fit in so smoothly  is after all an engineering marvel. But this near-perfect  manufacturing  skill of Nature has often fanned the debate on whether life was created, or evolved.

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If the advocates of creationism are ready to swallow, however grudgingly, the theory that life originated from the amoeba eons ago, science has not been able to give convincing answers to a number of sub-questions. How does, for instance, a tiny, fragile fertilised egg grow into a body of full-blown organs without any “external” guidance? Why are the shapes of organs in a human being as they are? Why are our legs longer than our arms?

Ardent proponents of evolutionary biology, however, may no longer have to fumble for answers to many such questions. A team of scientists from the Skirball Institute of Biomolecular Medicine, affiliated to the New York University School of Medicine, recently proved that logic could explain some of these difficult questions. Led by Deborah Yelon, the scientists unravelled the factors governing the complex process of the formation of the heart, which is a simple tube in early development, growing into a four-chambered, intricate organ with a characteristic pear shape. The researchers published their study in the February 20 issue of PLoS (Public Library of Science) Biology.

The heart, like many other organs, undergoes dramatic changes in its three-dimensional form as the embryo develops and functional demands intensify. Before it becomes a multi-chambered organ, it exists as a simple tube made up of myocardium (muscle) lined by endocardium (endothelium). As this thin-walled tube bulges outward, the chambers emerge and eventually acquire the characteristic dimensions of curvature and thickness.

In an article in Current Biology (September 2005), Sheffield University scientist David Strutt wrote that in order to control the shape and size of an organ, it is necessary that the dimensions be measured as the organ grows, and growth stops in each axis at the appropriate time.

But how this is achieved largely remains a mystery.

Developing organs acquire a specific three-dimensional form that ensures their normal functioning. The unique shape of the heart in higher-order animals, too, is critical for proper functioning. It is composed of a series of chambers that rhythmically drive blood circulation. Each of the chambers is designed for its optimal functional capacity. The organ, which commences beating from approximately 21 days of conception, is responsible for pumping blood via blood vessels through repeated, rhythmic contractions. In the process, it picks up carbon dioxide from the blood and drops it off in the lungs in exchange for oxygen which is in turn circulated through the blood.

Organs acquire their characteristic shapes not simply as a consequence of the accumulation of cells that profusely divide and multipl  Shape is also a physical process during which tissues are pressed, pulled and moved,  the scientists said.

In the experiments using transgenic (containing genes transferred from another species) zebra fish in which individual cardiac cells can be watched, Deborah Yelon, her student Heidi Auman and others demonstrated that cells change size and shape, enlarging and elongating to form bulges in the heart tube and eventually the chambers. The big question was whether the function of the heart — that is, blood flow — too influences cell shape.

Their studies using zebra fish   genetically modified so that each fish has a functional defect — helped them to find out that both blood flow and contraction of the cardiac tissues play a role in shaping cardiac cells. The unique tools the researchers used helped to clearly show that blood flow affects form. Further, they could define this at the cellular level.

The contribution of individual cell morphology to the overall shape was not previously shown, particularly in relation to the impact on chamber morphogenesis (formation and shape), said Deepak Srivastava, director of the Gladstone Institute of Cardiovascular Disease, University of California, San Francisco.

“This is an important advance as although it has long been thought that blood flow does affect morphogenesis, the two have been difficult to isolate in a cause-and-effect manner,” Srivastava told KnowHow.

Moreover, the work is more rigorous and detailed than previous such exercises, he said.

However, Larry Taber, professor of biomedical engineering at Washington University, feels that the researchers are missing some key points. For example, he says, they talk about curvature (of the heart chambers) but never explicitly discuss looping, which causes the greatest changes during heart development. Looping, it may be mentioned, involves the bending and twisting of the heart tube to create asymmetry of the chambers as is required for optimal functioning.

There are a lot of misconceptions about looping among developmental biologists, including some propagated in this paper,  Taber, who has been studying heart formation in chicks for a couple of decades, told KnowHow.

He, however, said that the Skirball team’s conclusion that contraction and blood flow are important for chamber expansion seems plausible. He also said that cell shape changes can cause curvature changes as well. What he disagrees with is their implication that contraction and blood flow regulate looping.

The use of zebra fish with minor induced genetic defects helped the Skirball Institute scientists to show that slight abnormalities in cell morphology may lead to substantial changes in the shape and functioning of the cardiac chambers. This could probably explain aberrations observed in some types of heart disease.

Source:The Telegraph (Kolkata,India)

Categories
Health Alert

Top 10 Facts Your Dentist Wants You to Know

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A lot of people have anxiety about going to the dentist. These dental facts can help put you on the right path to good dental health and avoid having dental problems in the future.
1) Dental Check Ups Include Oral Cancer Screenings:
When you go for your regular dental check up, your dentist and hygienist are also screening you for any signs of oral cancer. Every hour of every day, someone dies of oral cancer in the United States. This serious dental disease which pertains to the mouth, lips or throat is often highly curable if diagnosed and treated in the early stages. Visiting your dentist for regular check ups and avoiding tobacco are the key factors in preventing oral cancer.

2) Gum (Periodontal) Disease Affects Your Overall Health
Gum disease is one of the main causes of tooth loss in adults and has also been linked to heart disease and strokes. If diagnosed in the early stage, gingivitis, can be treated and reversed. If treatment is not received, a more serious and advanced stage of gum disease, called Periodontitis, which includes bone loss may follow. Brushing twice a day, flossing daily, regular dental check ups and cleanings are the best prevention against gum disease.

3) Dental Cleanings and Check Ups are Extremely Important
Going to the dentist for regular check ups & cleanings is one of the most important factors in maintaining good oral health.

Regular check ups can prevent cavities, root canals, gum disease, oral cancer, and other dental conditions. Don’t wait until you have a problem before you see your dentist, help prevent problems before they happen.

4) Brushing Twice a Day Helps to Keep the Cavities Away
When you brush your teeth,properly, at least twice a day, you are removing the plaque that causes cavities. Plaque is the soft and sticky substance that accumulates on the teeth from food debris and bacteria. Flossing daily will remove the plaque from in between the teeth that the toothbrush cannot reach. Removing plaque from your teeth also helps to prevent gum disease.

5) Bad Breath Could be the Result of a Dental Problem
About 85% of people with persistent bad breath have a dental condition that is to blame. If bad breath is the cause of a dental condition, mouthwash will only mask the odor and not cure it. Don’t be embarrassed to talk to your dentist, they are there to help you. Flossing daily and brushing your teeth & tongue twice a day can greatly reduce and possibly eliminate bad breath.

6) Proper Nutrition is Important for Good Dental Health
The sugars from soft drinks and non-nutritional foods combine with the bacteria in our mouths which produces acids that attack tooth enamel. This can lead to cavities and gum disease. Limiting the amount of beverages and foods that are high in sugar can greatly help to maintain good dental health.

7) Dental Problems Do Not Get Better or Go Away Without Treatment
If your dentist gives you a treatment plan for dental work that you need to have done, you should focus on getting your teeth fixed as soon as possible. Even cavities continue to get bigger. If they get big enough to reach the nerve in your tooth, your only options would be to have a root canal or have the tooth extracted.

8) A Root Canal is Usually Not Painful
I can’t tell you how many times I have heard a patient say, “Just pull the tooth, I’ve heard root canals are horrible.” With today’s technology, root canals are nothing like most people think. I have had root canals and I was pleasantly surprised every time. In my opinion, a root canal is as painless as having a filling.

9) You Should Change Your Toothbrush Every 3 Months
Manual toothbrushes become worn out after about 3 months and are not as effective as they once were. If you have gum disease, you should change your toothbrush every 4 – 6 weeks because bacteria can harbor in the bristles. You should always rinse your toothbrush out with hot water after every use and change it after you have been sick.

10) Maintaining Good Dental Health is Easy
Some people think that having good dental health takes too much effort. Seeing your dentist for regular dental check ups and cleanings, brushing twice a day, flossing daily and eating a nutritional diet are the key factors in having healthy teeth and gums. Now, what’s so hard about that?

Source:dentistry.about.com

Categories
Healthy Tips

Enhancing your diet

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Conventional wisdom has long held that as long as people who are healthy eat well enough to avoid specific nutritional deficiencies, they don’t need to supplement their diet. The only thing they have to do is consume a diet that meets the RDAs Recommended Dietary Allowances — and other guidelines for vitamin and mineral intakes developed by health agencies of the federal government.

But even if one accepts the government’s standards for vitamin and mineral intakes as adequate for good health, the evidence is overwhelming that most people don’t come close to meeting those nutritional requirements. Surveys show that only 9% of Americans eat five daily servings of fresh fruits and vegetables — the amount recommended for obtaining the minimum level of nutrients believed necessary to prevent illness.

Average calcium consumption in the United States and Canada is estimated to be about 60% of the current suggested level of 1,000 mg for younger adults — and far below the 1,200 mg recommended for men and women ages 50 to 70.

According to a review of national data by experts at the University of California, Berkeley, people often make food choices that are nutritionally poor: For example, they are more likely to select french fries than broccoli as a vegetable serving, and will opt for a soft drink rather than a glass of skim milk as a beverage. Not only may these and other foods contribute too much fat and sugar to your diet, but they can also result in less-than-optimal intakes of vitamins, minerals, and disease-fighting phytochemicals. Many American diets, these experts point out, contain half the recommended amounts of magnesium and folic acid. Vitamins A, C, and B6, as well as iron and zinc, are other nutrients that surveys show are at notably low levels in the American diet.

Even with the best nutritional planning, it is difficult to maintain a diet that meets the RDAs for all nutrients. For example, vegetarians, who as a group are healthier than meat eaters (and who tend to avoid junk foods lacking in vitamins and minerals), still may be deficient in some nutrients, such as iron, calcium, and vitamin B12. And most people who want to maintain a healthy low-fat diet will have a problem obtaining the recommended amounts of vitamin E from their food alone, because so many of the food sources for vitamin E are high in fat. Another complication is that a balanced diet may not contain the more specialized substances — fish oils, soy isoflavones, or alpha-lipoic acid — that researchers think may promote health. For generally healthy people who cannot always eat a well-balanced diet every day, a supplement can fill in these nutritional gaps or boost the nutrients they consume from adequate to optimal.

There are various other reasons why people who maintain good eating habits might benefit from a daily supplement. Some experts now believe that exposure to environmental pollutants — from car emissions to industrial chemicals and wastes — can cause damage in myriad ways inside the body at the cellular level, destroying tissues and depleting the body of nutrients. Many supplements, particularly those that act as antioxidants, can help control the cell and tissue damage that follows toxic exposure . Recent evidence also indicates that certain medications, excess alcohol, smoking, and persistent stress may interfere with the absorption of certain key nutrients. And even an excellent diet would be unable to make up for such a shortfall.

Source:Your Guide to
Vitamins, Minerals, and Herbs

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