Dietary Fiber - For Diabetes, Heart and General Health

Most people understand the importance of dietary fiber in their diet. Much has been said about its importance in heart health, diabetes, cancer prevention, and even weight control.

What is less well understood is how different types of fiber effect the body. Some provide fecal bulk, some are absorbed more quickly into the blood stream than others, and thus raise blood sugar levels more quickly, and yet others provide benefits to the heart.

Thus, despite the apparent simplicity, fiber is a complex topic. And whilst all types of fiber are important, if you are looking at preventing or managing specific conditions, its not enough to just look at the total dietary fiber as written on food packaging.

Dietary fiber is broadly classified into soluble and insoluble fiber. Soluble fiber is fermented in the colon, and plays a role in slowing the absorption of glucose into the bloodstream. It also encourages the growth of the 'friendly' bacteria that help break down bile, and are involved in the creation of B vitamins like folic acid, niacin, and pyridoxine.

Insoluble fiber, on the other hand, acts a bit like an intestinal broom. It provides bulk to the stools, and makes sure they pass through easily and quickly. This is the type of fiber that keeps you 'regular', not insoluble fiber.

Insoluble fiber does provide a feeling of fullness, however. This makes it great for weight loss and controlling hunger. It also keeps blood sugar levels more stable, although research into the rate at which carbohydrates enter the bloodstream have found there to be some significant differences within the foods that make up the fiber group. Dietary fiber can thus be rated by its Glycemic Index, which effectively ranks fiber foods with each other on a relative scale.

The idea is to try and include more low gylcemic index foods. Foods with a high glycemic index cause blood sugar levels to spike, providing too much energy to the blood in the form of carbohydrates, which in turn sets off the body's sugar controlling hormone - insulin. You thus get a 'high' followed by a sudden drop. This in turn leads the body to want more carbohydrates to balance itself again, leading to cravings and overeating, as well as tiredness and moodiness.

Low glycemic index foods include lentils, chickpeas, baked beans, fruit loaf, salmon sushi, barley, milk, low fat custard, soy milk, yoghurt (not diet yoghurt), apples, strawberries, grapes, spaghetti, peas, carrots, fructose, strawberry jam, and chocolate milk.

Moderate glycemic index foods include pea soup, rye bread, porridge, muesli, ice cream, bananas, pineapple, kiwi fruit, new potatoes, beetroot, white sugar, honey, and mars bars.

High glycemic index foods include broad beans, bagels, white bread, brown rice, watermelon, udon noodles, desiree, pontiac and sebago potatoes, and glucose.

We need both soluble and insoluble fiber, however. A study published in the American Journal of Clinical Nutrition found that in a group of 6000 French men and women, those with the highest levels of soluble and insoluble fiber in their diet had a lower risk of being overweight, a lower risk of having blood pressure problems, cholesterol problems, and they had better levels of triacylglycerols and homocysteine. The last two are measure3 of heart health.

Fiber from cereals was linked to lower body fat, lower blood pressure, and lower levels of homocysteine. Those with a higher intake of vegetables, also a source of fiber, had lower blood pressure and lower homocysteine levels. Fiber from fresh fruit was associated with a lower waist to hip ratio (good news for dieters!), and lower blood pressure. And fiber from dried fruit, nuts, and seeds (like sesame seeds, sunflower seeds, and pumpkin seeds) was also linked to a lower waist to hip ratio, lower body fat, and a better fasting glucose concentration. Fasting glucose relates to having a steady level of glucose between meals. If it dips too low, we crave things, often sweets.

Fiber has another interesting benefit. In people with type 2 diabetes, it has been found to lower the levels of 'bad' cholesterol, and increase the levels of 'good' cholesterol. It has already been established that fiber supplements will lower the levels of bad cholesterol in people, whether they have diabetes or not. But this new study found that fiber supplements also decreased the reabsorption of cholesterol from meals.

To get this benefit, it is important to time taking the fiber supplement in synch with meals. The study participants took a fiber supplement drink before mealtimes, and this ensured that the fiber was in the intestines when the meal was being eaten. The people in the study participated for 90 days and their average age was 59 years old.

References:
1. Australian Healthy Food, November 2005
2. nutraingredients.com/news/ng.asp?id=64759
3. nutraingredients.com/news/ng.asp?id=57887
4. nutraingredients.com/news/ng.asp?id=64462
5. nutraingredients.com/news/ng.asp?id=59737

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Read More..

Dietary Therapy: High Fiber Diets

Can high-fiber diets really do all they claim to do? Studies have looked at the relationship between high-fiber diets and many diseases, including colon cancer, coronary heart disease and diabetes.

Proven benefits of a high-fiber diet include prevention and treatment of constipation, hemorrhoids and diverticulosis. In addition, certain types of fiber help decrease blood cholesterol levels.

Dietary fiber comes from the portion of plants that is not digested by enzymes in the intestinal tract. Part of it, however, may be metabolized by bacteria in the lower gut. Different types of plants have varying amounts and kinds of fiber, including pectin, gum, mucilage, cellulose, hemicellulose and lignin.

Pectin and gum are water-soluble fibers found inside plant cells. They slow the passage of food through the intestines but do nothing to increase fecal bulk. Beans, oat bran, fruit and vegetables contain soluble fiber.

In contrast, fibers in cell walls are water insoluble. These include cellulose, hemicellulose and lignin. Such fibers increase fecal bulk and speed up the passage of food through the digestive tract.

Wheat bran and whole grains contain the most insoluble fiber, but vegetables and beans also are good sources.Sometimes there is confusion as to the difference between crude fiber and dietary fiber. Both are determined by a laboratory analysis, but crude fiber is only one-seventh to one-half of total dietary fiber.

Insoluble fiber binds water, making stools softer and bulkier. Therefore, fiber, especially that found in whole grain products, is helpful in the treatment and prevention of constipation, hemorrhoids and diverticulosis.

Diverticula are pouches of the intestinal wall that can become inflamed and painful.It is now known that a high-fiber diet gives better results once the inflammation has subsided.

Some types of fiber, however, appear to have a greater effect than others. The fiber found in rolled oats is more effective in lowering blood cholesterol levels than the fiber found in wheat. Pectin has a similar effect in that it, too, can lower the amount of cholesterol in the blood.

High-fiber diets may be useful for people who wish to lose weight. Fiber itself has no calories, yet provides a 揻ull?feeling because of its water-absorbing ability. For example, an apple is more filling than a half cup of apple juice that contains about the same calories.

Foods high in fiber often require more chewing, so a person is unable to eat a large number of calories in a short amount of time. Dietary fiber is found only in plant foods: fruits, vegetables, nuts and grains. Meat, milk and eggs do not contain fiber.

The form of food may or may not affect its fiber content. Canned and frozen fruits and vegetables contain just as much fiber as raw ones. Other types of processing, though, may reduce fiber content. Drying and crushing, for example, destroy the water-holding qualities of fiber.

The removal of seeds, peels or hulls also reduces fiber content. Whole tomatoes have more fiber than peeled tomatoes, which have more than tomato juice. Likewise, whole wheat bread contains more fiber than white bread.

Fiber supplements are sold in a variety of forms from bran tablets to purified cellulose. Many laxatives sold as stool softeners actually are fiber supplements. Fiber抯 role in the diet is still being investigated.

It appears that the various types of fiber have different roles in the body. For these reasons, avoid fiber supplements. Instead, eat a variety of fiber-rich foods.

This is the best way to receive the maximum benefits from each type of fiber present in foods, and obtain necessary nutrients.

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Read More..

Nine Facts About Fiber

If you've been looking for a way towards a high

octane diet, you'll find fiber to be exactly what

you need. Even though research has shown fiber to

be powerful, many people aren't taking this nutrient

seriously.

To help you fuel your health with fiber, here are

10 facts to help.

1. Fiber fights diseases. A diet high in fiber can

help to prevent colon cancer and heart disease. High

fiber helps the body to eliminate cholesterol by

binding it in the digestive tract. For thousands of

years, fiber has been used to stop constipation.

2. Fiber can actually help with overeating. All high

fiber foods will take longer to chew and digest,

making you feel satisfied longer

3. Most popular foods don't have enough fiber. If

you like the more popular foods, you probably need

to increase your intake of fiber.

4. Grains offer the most fiber. Dietary fiber is

actually plant matter that we cannot digest. The best

sources are whole grains and concentrated grain

products.

5. Kids need fiber as well. Children that are older

than 2 years of age should consume a daily intake of

fiber. Kids are most receptive to fiber found in

fruits, vegetables, and even fortified breakfast

cereals.

6. More fiber needs more water. In order to keep

fiber moving through your digestive tract, you'll

need to consume a lot of water. With your diet of

fiber, you'll need eight or more glasses of water

every day.

7. Fiber cannot be cooked out. When you cook

your fruits and vegetables, don't worry about cooking

the fiber out, as it stays. The fiber found in

fruits and vegetables aren't just in the skin or

in the peel.

8. You can get enough fiber. If you eat more than

50 grams of fiber in a day, you can get diarrhea

and bloating, which can interfere with your body's

absorption of other key minerals.

9. Getting the right amount of fiber in your diet

doesn't have to be hard. Even though you may think

so, getting the amount of fiber you need isn't very

hard to do. All you have to do is eat the right

foods and you'll be well on your way to a fiber

rich lifestyle.

As one of the key ingredients to healthy eating,

fiber is something you don't want to skip. Fiber can

serve many different purposes, which were covered

above. If you aren't getting enough fiber in your

diet - you should do something about now instead

of waiting until it is too late.

This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.

Read More..