Showing posts with label cell. Show all posts
Showing posts with label cell. Show all posts

Tuesday, 29 September 2009

The Six Super Foods Every Woman Needs

The Six Super Foods Every Woman Needs
The foods you really need to stay you healthy and strong
By Colette Bouchez
WebMD Feature
Reviewed by Louise Chang, MD

From the food pyramid to the Internet to your local bookstore, there is certainly no shortage of advice on nutrition and healthy eating. But with all the media hype surrounding many “health foods,” it can be hard for a woman to tell the nutrients from advertising ploys.

“We are sometimes led to believe that a specific food is healthier than it really is,” says nutritionist Elizabeth Somer, MS, RD, author of Age-proof Your Body. “Or that you need some exotic or expensive form of certain nutrients to gain benefits -- and most of the time that’s not true.”

Moreover -- as happened in the '90s when low fat cookies made everyone temporarily forget about calories -- Somer says some of today’s advertising sways us toward one healthy aspect of a food to keep us from noticing other, less healthy attributes. “A product may advertise itself as ‘no cholesterol’' she says, “but it still can be loaded with bad fats or tons of calories. You have to look at the total food to know for sure.”

NYU nutritionist Tara Miller, MS, RD, agrees. “You have to read the whole label, look at all the ingredients and the portion sizes, before you know for sure just how healthy a food is.”

Or you can let us do the work for you! To help you zero in on the healthiest foods that women can eat, we asked a panel of experts for their advice.

What follows is a description of the six super foods they say every woman needs. While these foods won’t cover all your nutrient bases, incorporating them into your diet as often as possible can help give you a wide range of protection.
Super foods for women: What you need

Super Food # 1: Low-fat yogurt
Goal: 3 to 5 servings a week

What it does: As a health food, yogurt is almost as old as, well, good health itself. But experts say evidence continues to accumulate that reveals its benefits in many new and exciting ways. And not just yogurt. Somer tells WebMD that any fermented dairy product -- including kefir -- contains healthy “probiotics” -- bacteria with the power to protect you in myriad ways.

“There is a suggestion [that yogurt] may decrease the risk of breast cancer,” Somer says. ”And there’s very strong evidence it can reduce problems associated with irritable bowel syndrome and inflammatory digestive tract disorders -- both conditions that impact women more than men.” Additionally, she says, yogurt can help reduce the risk of stomach ulcers and vaginal infections.

Enjoy a cup of yogurt at breakfast, lunch, or snack to help meet the U.S. Dietary Guidelines recommendation for three servings of low fat dairy each day. “It’s loaded with bone-healthy calcium -- something every woman needs more of at every age,” Somer says. One cup of yogurt has about 448 mg of calcium, compared to just 300 for eight ounces of skim milk.

The key, according to Somer, is to choose a low fat yogurt with live cultures -- like Lactobacillus acidophilus. And do check the label, Somer advises. Some store brands may not have the level of cultures found in more established brands.

Also important: Skip the fruit-on-the-bottom or other flavored varieties. “Too much sugar,” says Somer, who also reminds us that, no, those two blueberries on the bottom of the container do not constitute a serving of fruit!

Super Food # 2: Fatty fish -- like salmon, sardines, and mackerel
Goal: 2 to 3 servings every week

What it does: The healthy factor in fish is omega-3 fatty acids, and specifically two types known as DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid).

“Fatty fish not only plays a vital role in the health of the membrane of every cell in our body, it also helps protect us from a number of key health threats,” says Laurie Tansman, MS, RD, CDN, a nutritionist at Mount Sinai Medical Center in New York.

Some of those threats include heart disease, stroke, hypertension, depression, joint pain, and a number of illnesses linked to inflammation, including lupus and rheumatoid arthritis. Somer says fish may even offer some protection against Alzheimer’s disease.

While many foods -- such as walnuts, flaxseed oil, and some mayonnaise brands -- claim the benefits of omega-3 fatty acids, Somer cautions that only the DHA or EPA forms of omega-3 can be directly used by the body.

“What you get in foods like walnuts and flaxseed oil is an omega-3 acid known as ALA -- alpha-linoleic acid,” says Somer. “And while it’s certainly good for you, it requires a process in the body to convert it to DHA. And that conversion process can be influenced by a variety of individual factors.”

The good news: You are likely to see a wheelbarrow full of new products supplemented with DHA slowly making their way to market in the coming year. Currently, Kellogg is reportedly developing a cereal fortified with DHA, while a company called Nutri-Kids has already launched a DHA fortified ready-to-drink milk product. You can also find eggs fortified with DHA and, says Somer, certain brands of soymilk.

Super Food # 3: Beans
Goal: 3 to 4 servings every week

What it does: Low in fat, beans are a good source of protein and fiber and may have protective effects against heart disease and breast cancer. Beans may also play a role in stabilizing female hormones, says nutritionist Susan Krause, MS, RD.

“Beans have been around so long that most people don’t view them as a fancy new health food,” Krause says. “But in fact, they are among one of the healthiest things a woman can eat.”

In studies published in the International Journal of Cancer, researchers found that beans in general, and lentils in particular, may have some protective effects against breast cancer. In research published in the Archives of Internal Medicine, doctors found a relationship between a lower incidence of cardiovascular disease and a higher intake of legumes. Well known legumes include peas, beans, lentils, and peanuts.

As a source of both soluble and insoluble fiber, Krause says, beans can help lower cholesterol, while their level of a nutrient known as isoflavone can help in the regulation of hormones and may aid with PMS, perimenopause, or menopause symptoms. Although soybeans have among the highest levels of isoflavones, other sources include red clover, kudzu, mung beans, alfalfa sprouts, black cohosh, and chickpeas.

“Beans also contain something called protease inhibitors, which may help protect against breast cancer,” says Krause. Protease inhibitors help slow the division of cancer cells and in this way may prevent tumor formation.

Last but not least, if you are in your reproductive years, beans can give you a steady supply of folic acid -- essential if you should become pregnant.

Super Food # 4: Tomatoes (or watermelon, red grapefruit, red navel oranges)
Goal: 3 to 5 servings each week

What it does: The powerhouse nutrient in all these fruits is lycopene. And, according to Miller, while the headlines touted its protective effects against prostate cancer, more quiet research has shown it has tremendous health benefits for women as well.

“Research is starting to show that lycopene may protect against breast cancer,” Miller says. 'And it’s also a powerful antioxidant that can help a woman fight heart disease.”

The very latest research shows it may also help keep you looking younger longer by protecting against UV damage from the sun.

Super Food # 5: Vitamin D fortified low fat milk or orange juice
Goal: At least 400 IUs of vitamin D daily

What it does: “Essential to helping the bones absorb calcium from the gut,” says Somer, “vitamin D helps reduce the risk of osteoporosis and may be vital in reducing the risk of diabetes, multiple sclerosis, and tumors of the breast, colon, and ovary.”

Indeed, recent studies from the University of California San Diego suggest that vitamin D has the potential to prevent up to one–half of all breast, colon, and ovarian cancer in the United States.

Somer says that a growing body of research indicates many women may be vitamin D deficient. “A combination of staying out of the sun (which the body uses to manufacture vitamin D) and using sunscreen, which blocks the synthesis of vitamin D, has resulted in many women hitting a dangerously low level of this nutrient,” says Somer.

While Vitamin D is found in salmon, mackerel, tuna, and sardines, experts say fortified foods, such as milk, are the best source.

Super Food # 6: Berries (blueberries, strawberries, raspberries, cranberries)
Goal: 3 to 4 servings every week

What It Does: In a way similar to wine, these fruits may protect your body with powerful anti-cancer nutrients known as anthocyans, which are believed to play a role in cell repair. Krause says research shows anthocyans may decrease the risk of several cancers, including those in the breast and gastrointestinal tract.

“These berries,” says Krause, “are also high in vitamin C and folic acid, which is essential for all women in their childbearing years. And they offer powerful anti-oxidant protection, which not only protects the heart but also may protect against skin aging, from the inside out.” Moreover, she says that cranberries may help reduce the risk of urinary tract infections in women, while the nutrient, lutein found in all the berries, can help protect vision.

Monday, 28 September 2009

The Skin - The Integumentary System

The Skin - The Integumentary System

First Line Of Body's Defence

Integumentary (Skin) system

The integumentary system, formed by the skin, hair, nails, and associated glands, enwraps the body. It is the most visible organ system and one of the most complex. Diverse in both form and function—from delicate eyelashes to the thick skin of the soles—the integumentary system protects the body from the outside world and its many harmful substances. It utilizes the Sun's rays while at the same time shielding the body from their damaging effects. In addition, the system helps to regulate body temperature, serves as a minor excretory organ, and makes the inner body aware of its outer environment through sensory receptors.

Definition
The integumentary system includes the skin and the related structures that cover and protect the body. The human integumentary system is composed of the skin, and includes glands, hair, and nails. The largest organ in the body, the skin protects the body, prevents water loss, regulates body temperature, and senses the external environment.

Description

The integumentary system serves many protective functions for the body. It acts as a mechanical barrier, simultaneously preventing water from entering the body and excessive water loss. It also limits access of microorganisms that could cause illness, and protects underlying tissues from mechanical damage. Pigments in the skin called melanin, give skin its color, and absorb and reflect the sun's harmful ultraviolet radiation.

Function
In addition to serving as a protective barrier, the skin helps to regulate the body temperature by several mechanisms. If heat builds up in the body, sweat glands in the skin produce more sweat that evaporates and cools the skin. When the body overheats, blood vessels in the skin dilate (expand), bringing more blood to the surface, and allowing body heat to dissipate. When the body is too cold, the blood vessels in the skin constrict, shunting blood away from the body surface, thus conserving heat. Along with temperature regulation, the skin serves as a minor excretory organ, since sweat removes small, clinically insignificant amounts of nitrogenous wastes produced by the body. The skin also functions as a sense organ since it contains millions of nerve endings that detect touch, heat, cold, pain and pressure. Finally, the skin produces vitamin D in the presence of sunlight, and renews and repairs damage to itself.

In an adult, the skin covers about 21.5 sq. ft (2 sq.m), and weighs about 11 lb. (5 kg). Depending on location, the skin thickness ranges from 0.02-0.16 in (0.5-4.0 mm). Skin is composed of an outer layer, or epidermis, and a thicker inner layer, the dermis. A subcutaneous layer of fatty or adipose tissue is immediately below the dermis. Fibers from the dermis attach the skin to the subcutaneous layer, and the underlying tissues and organs also connect to the subcutaneous layer.

The Epidermis
Ninety percent of the epidermis, including the outer layers, contains keratinocytes, cells that produce keratin, a protein that helps waterproof and protect the skin. Melanocytes are pigment cells that produce melanin, a brown-black pigment that adds to skin color and absorbs ultraviolet light, thereby shielding the genetic material in skin cells from damage. Merkel's cells disks are touchsensitive cells found in the deepest layer of the epidermis of hairless skin. In most areas of the body, the epidermis consists of four layers. On the soles of the feet and palms of the hands where there is considerable friction, the epidermis has five layers. Calluses, abnormal thickenings of the epidermis, occur on skin subject to constant friction. At the skin surface, the outer layer of the epidermis constantly sheds the dead cells containing keratin. The uppermost layer consists of about 25 rows of flat dead cells that contain keratin.


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The Immune System & The Skin

The Immune System and the Skin

Reviewed by Dr Victoria Lewis, specialist registrar in dermatology.

Skin provides protection from foreign invaders in several ways. Apart from the physical barrier there are specialised cells of the immune system throughout the layers of the skin. Some of these cells detect invasion by foreign proteins such as bacteria or viruses and other cells have the function of destroying and removing such material. When a foreign protein (called an ‘antigen’) comes into contact with cells of the immune system these cells produce proteins (called antibodies) that fit around the invading antigen in a unique way. A fair analogy is of a lock and key, in which the invader is the key and the immune system cells manufacture a lock with which to trap it.

The antibody-antigen combination is recognised by other cells within the immune system family, which then move in and destroy the invader. In the type of immune reaction called ‘hypersensitivity’, the presence of foreign material sets off reactions from skin cells called mast cells. These contain powerful signalling chemicals such as histamine which, when released, activate the other components of the immune system. Histamine has marked local effects on the skin, familiar to anyone who has brushed against stinging nettles. At the contact site the skin swells and becomes red, due to opening up of the blood vessels and leakage into the tissues of fluid from within the blood vessels and the lymphatic system. Surrounding the contact site the skin blood vessels contract, restricting the flow of blood and so causing the skin here to pale (the so-called ‘wheal and flare’ reaction). Such a hypersensitivity reaction occurs almost immediately after being pricked by stinging nettles, hence the common term ‘nettle rash’. The proper medical term is urticaria and a great many other agents apart from nettles, such as chemicals and food components, can trigger similar reactions. The ‘nettle rash’ form of sensitivity is the easiest to understand but there are several other ways in which immune reactions occur within the skin. These usually act over longer time scales.

In allergic contact dermatitis for example it takes two or three days for the immune system cells to recognise the presence of the irritation and to recruit more cells locally to deal with the situation. Such a delay makes it harder to work out what caused the allergic reaction in the first place.

Changes in eczema - a common immune reaction

In eczema the chain reaction of events triggered by the irritant causes alterations in the structure and function of the layers of the skin. These include splitting of the normally tight layers of the epidermis so that the protective function of the epidermis is partially lost. This can lead to irritation from the penetration of harmful substances that would be kept out by intact skin and by infection with skin bacteria. Loss of water holding capacity causes the skin to dry out and to flake off more easily, and the skin thickens in response to repeated scratching.

To the naked eye the mildest forms of eczema show as dry, paler patches of skin without much in the way of accompanying inflammation. In more active eczema there is skin thickening and splitting with surrounding redness or more obvious signs of infection such as overlying crusts. Always there is intense itching, which is an essential feature of the condition; ‘eczema’ that in the absence of treatment doesn’t itch isn’t eczema!

More detailed examination of the skin as well as other indirect tests of the immune system show that it is highly active in all forms of eczema. On blood tests for example increased levels are usually seen of proteins called immunoglobulins, particularly one called IgE. There are also increased numbers of a type of white blood cell usually associated with allergy. These features indicate that eczema is not only something that goes on within the layers of the skin but it is part of a general process of activity in the immune system.

Sophisticated techniques are increasingly being developed to detect the subtle changes in the biochemistry of the cells within the skin and how they interact with antigens and with the other cells of the body. Causes of eczema Why eczema occurs is still far from being well understood. It is useful to think of it as two types – endogenous (coming from within the body) and exogenous (due to contact with an irritant or allergen). Exogenous or contact dermatitis is caused by sensitivity to a particular substance which then causes a reaction in the skin. It does not explain why some people are sensitive in the first place and why some substances can trigger a reaction while others do not. The cause of endogenous eczema is often not found.

It is possible to have both types of eczema at the same time.

Genetic

Atopic eczema (an endogenous eczema), has a strong genetic component. The children of parents (especially the mother) who have eczema are very likely to develop it too, more so than asthma or hay fever for example, which also are allergic conditions.

• Work on gene patterns has begun to show some more specific associations with eczema but these are still early days in this type of research. The pace of advance in genetic research is however very rapid and the hope is that more treatments will be developed from the knowledge gained in this area.

• Immune system triggers

• Nearly 40 per cent of children with moderate to severe eczema will develop skin rashes in response to foods to which they are sensitive.

• General food group allergies can be detected by a blood test called a RAST test. The relationship between food allergies and eczema in young children is often important but as they get older the association becomes less clear.

• Allergens can also come into the body through the air. In this way house dust mite protein (from the droppings of the mite and not the mite itself), animal dander, moulds and weed spores can come into the lungs and set off the immune system there, resulting also in reactions in the skin. Effective removal of house dust mite is one strategy that can help improve eczema.

• Bacteria, particularly Staphylococcus aureus, are probably the most important triggers for eczema. This organism, found on the skin of over 90 per cent of people affected by eczema, produces a ‘superantigen’ which is powerfully able to activate immune system cells in affected skin.

• If superantigen extracted from Staphylococcus bacteria is applied to normal skin then an eczema reaction occurs. Scratching of the skin breaks the barrier function down and allows more bacteria to gain entry to the sub layers of the skin.

• Despite the activation of the immune system however the body’s ability to reject the bacterial infection is impaired. One of the treatments of active eczema is to kill off the bacteria with antibiotics.

Treatments acting on the immune system

In a way, antibiotics act to boost the effectiveness of our own immunity. Antibiotics act directly on bacteria to destroy them or prevent them from duplicating, thus allowing our scavenging cells to gain the upper hand and eliminate the remaining bacteria.

There are other means by which the immune system can be manipulated to our favour in eczema.

Steroids

• The longest standing treatments of this type are steroid creams and ointments.

• ‘Steroid’ is a collective term for a range of hormones produced mainly by the adrenal glands, two walnut-sized pieces of tissue that are located on the top of each kidney.

• Steroids are now manufactured artificially and they have many and varied effects but among the most important are their anti-inflammatory properties. Steroids are therefore used in asthma inhalers to reduce the inflammation within the airways that occurs in that condition.

• In rheumatoid arthritis they reduce pain and swelling from inflamed joints, and in eczema steroid creams switch off the immune system attack within affected skin. By interrupting the inflammation the forces of repair are given an advantage over those which act to disrupt the skin.

• Although steroid creams are effective and can be used safely with care they do have several important side effects, including thinning of the skin in the long term. The may also cause problems with the liver in prolonged use. Inducing the natural steroids via the adrenals is a better option for long term use if required - see Reflexology.

• Cytokine inhibitors

• New treatments for eczema also inhibit the actions of the immune system within the skin but by a different mechanism to steroids.

• These are called cytokine inhibitors, cytokines being the name of the signalling compounds which marshal the immune response in eczematous skin. By switching off cytokine production the immune system attack on the skin is turned down.

There are two such medicines currently available in cream form; tacrolimus (Protopic) and pimecrolimus (Elidel). Both are available for use in the UK by dermatologists or GPs experienced in treating skin disease. Elidel can be used in children from two years upwards.

• The advantages of these new treatments over steroids are several. They do not cause thinning of the skin, have not shown significant long term side effects so far and they can be used on skin areas, such as the face, neck and skin folds, where steroid creams can give particular problems.

• As with any new treatments their exact place in the management of eczema is still being decided, partly because doctors need to gain experience in using them but also because they are more expensive than standard treatments and so are subject to constraints in the budgets under which doctors prescribe.

• Generally they will be used in people with moderate to severe eczema but Elidel is licensed also to be used at the first sign of eczema activity. In intermittent use over the long term it gives good eczema control.

• Cytokine inhibitor creams may eliminate the need for an individual with eczema to use any steroid creams, which is potentially a big advantage for those currently dependent on higher dose or long-term topical steroids.

References Leung DYM, Bleber T. Atopic Dermatitis. The Lancet (2003);361:151-160.

Based on a text by Dr Dan Rutherford, GP


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Sunday, 27 September 2009

Water - H2O - The one f the PRIME Sources of Life

Water - H2O

The Prime Source Of Life - Seriously!

Water is the most important nutrient we can consume . . . .

Beside air - Water is our Prime Source of Life for every organism on this planet!

Many headaches, lack of concentration, lethargy, aches and pains we suffer, stem from the lack of water in our body's - also called dehydration. Even feeling hungry sometimes, even fter you've not long eaten is usually down to dehydration. It is necessary for every vital chemical action in the body. It is necessary for the health of every single cell in the body. Lack of water or dehydration is a cause of physical stress which can lead to other problems if not addressed!

Cells make up ever major organ in the body - brain, heart, liver, kidney, spleen, pancreas, kidneys, lungs, etc. Think about it! If they don't get enough water to stay healthy, they certainly won't function as they should do, which may allow the cell to mutate/adapt, which may lead to problems.

Think of an apple or a grape and what happens to it if left exposed to natural day to day environment . . . inside. Day by day the apple loses it's moisture - it's water, which can not replenished. In a few days it becomes shriveled, soft and eventually inedible. This is similar to what happens to each cell in the body not replenished with water. The main difference between us is that we are actively living everyday, therefore using a lot more water than just evaporation. We are a lot bigger and we are a whole lot more complex in terms of systems at a cellular level that need water to function correctly. The average adult should be consuming at least 6-8 glasses of water daily - approximately 2-3 litres (more if ill or working physically hard).

If you don't drink of water, then it is time to wean yourself onto a diet that includes a lot of water packed foods to compensate as you adjust.

DRINK WATER ON EMPTY STOMACH ...... If you can!

It is popular in Japan today to drink water immediately after waking up every morning. Furthermore, scientific tests have proven its value. We publish below a description of use of water for our readers. For old and serious diseases as well as modern illnesses the water treatment had been found successful by a Japanese medical society as a 100% cure for the following diseases: Headache, body ache, heart system, arthritis, fast heart beat, epilepsy, excess fatness, bronchitis asthma, TB, meningitis, kidney and urine diseases, vomiting, gastritis, diarrhea, piles, diabetes, constipation, all eye diseases, womb, cancer and menstrual disorders, ear nose and throat diseases.

METHOD OF TREATMENT

1. As you wake up in the morning before brushing teeth, drink 4 x 160ml glasses of water

2. Brush and clean the mouth but do not eat or drink anything for 45 minutes

3. After 45 minutes you may eat and drink as normal.

4. After 15 minutes of breakfast, lunch and dinner do not eat or drink anything for 2 hours - ie you can drink straight after a meal (within the first 15 minutes) but not for 2 hours after that.

5. Those who are old or sick and are unable to drink 4 glasses of water at the beginning may commence by taking little water and gradually increase it to 4 glasses per day.

6. The above method of treatment will cure diseases of the sick and others can enjoy a healthy life.

The following list gives the number of days of treatment required to cure/control/ reduce main diseases:

1. High Blood Pressure - 30 days

2. Gastric - 10 days

3. Diabetes - 30 days

4. Constipation - 10 days

5. Cancer - 180 days

6. TB - 90 days

7. Arthritic patients should follow the above treatment for only 3 days in the 1st week, and from 2nd week onwards - daily.

This treatment method has no side effects, however at the commencement of treatment you may have to urinate a few times. It is better if we continue this and make this procedure as a routine work in our life.

Drink Water and Stay healthy and Active.

This makes sense ... the Chinese and Japanese drink hot tea with their meals ..not cold water. maybe it is time we adopt their drinking habit while eating!!! Nothing to lose, everything to gain...

For those who like to drink cold water, this article is applicable to you. It is nice to have a cup of cold drink after a meal. However, the cold water will solidify the oily stuff that you have just consumed. It will slow down the digestion. Once this sludge reacts with the acid, it will congeal.

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Water For Life
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