This is a guest post by Melissa Marek, RD LD

Fiber is an extremely important part of your daily diet. Its best known benefit is its ability to help keep our bowels moving. Eating enough fiber will help prevent constipation. The added benefit is that it also plays a role in protecting against diseases such as diabetes, heart disease and cancer. If that isn’t enough reason to get a daily dose of fiber, it also helps with weight management by helping to keep you fuller longer.

In order to make sure you are getting enough fiber, it helps to understand where it comes from and where you can find it. Fiber comes mainly from plant cell walls, the parts that cannot be digested by the enzymes of the GI tract. For that reason, fiber can be found in plant foods such as fruits, vegetables, and grains.

To best benefit from fiber, the recommended daily amount is 21-25 grams per day for women and 30-38 grams per day for men. This is not a difficult goal to meet, but remember that when adding fiber to your diet, you will need to increase your fiber intake slowly and more importantly, increase your fluids. If you don’t drink enough fluids you may suffer from constipation, the very thing that fiber helps alleviate.

To better comprehend the benefits of fiber and how to best meet daily requirements, it helps to understand that there are different types of fiber. They come from different sources and, accordingly, help with different things.

SOLUBLE FIBER may help lower blood cholesterol, especially LDL (bad) cholesterol. It also helps control blood sugar in people with diabetes. You can get soluble fiber from oats, oat bran, dried beans and peas, nuts, barley, flax seed, oranges, apples, carrots, and psyllium husk.

INSOLUBLE FIBER moves bulk through the intestines, which helps prevent constipation. It also controls and balances the pH in your intestines. Insoluble fiber can be found in fruit skins, root vegetable skins, dark green leafy vegetables, whole wheat products, corn bran, seeds and nuts.

Soluble fiber, as it name alludes, becomes a jelly-like mass when mixed with water and ferments in the intestinal tract, but insoluble fiber just absorbs the water and bulks up stool.

The term DIETARY FIBER, which appears on nutrition facts labels is merely a sum of the soluble and insoluble fiber content in a product, per serving.

A common source of fiber is whole grain. Whole grain refers to the entire grain seed (bran, germ, & endosperm).  Whole grain foods are an important source of not only fiber, but also of vitamins, minerals and other health-promoting compounds that you won’t find in a refined grain.

HOW MUCH SHOULD I BE EATING?

According to the 2005 Dietary Guidelines for Americans, 3 or more ounce-equivalents of whole grain products per day is ideal. You can meet this requirement by adding barley, buckwheat, bulgur, corn, millet, rice, rye, oats, sorghum, wheat and wild rice to your daily diet.

What does a one-ounce equivalent of whole grains look like?

• 1 slice 100% whole grain bread
• 1/2 of a 100% whole grain English muffin or bagel
• ½ cup hot cooked oatmeal (Rolled oats or quick oats)
• 2 cups popped popcorn
• 1 ounce baked tortilla chips (About 15 chips)
• 1/3 cup cooked whole wheat pasta
• 1/3 cup cooked brown rice, bulgur, sorghum, or barley

TIPS TO INCREASE YOUR FIBER INTAKE:

• Sprinkle flax meal, wheat germ,  or nuts/seeds onto your cereal, cottage cheese, yogurt, or even frozen yogurt
• Add fresh or dried fruits to your cereal or yogurt
• Substitute whole wheat flour for at least 1/3 of the all purpose flour in baked goods
• Add frozen vegetables to soups or casseroles
• Add beans into a salad, soup, or stew
• Cut prunes into pieces and mix them into yogurt, cereal, or pancake mix

What to do at the supermarket:

Packaging for fiber rich foods now often contain a label promoting its fiber content. These labels make finding fiber-rich foods easy so shoppers don’t have to go through the hassle of checking out the food label or searching for the fiber content. But what do these regulated fiber claims mean exactly?

• 100% Whole Grain or 100% Whole Wheat: The product doesn’t have any refined white flour
• Good source of fiber:  There are at least 3g per serving
• Excellent source of fiber:  There are at least 5g per serving
• When reading the ingredient statement, a whole grain should be listed FIRST!

Here’s a handy list of fiber rich products:

• Oats
• Oat bran
• Grains (Barley, bulgur, Kasha, Amaranth, Quinoa, Couscous)
• Polenta
• Brown rice
• Whole wheat breads and pastas
• Fresh fruits (Oranges, pears, dried figs, apples, berries, raisins)
  —> Choose whole fruits (fresh, frozen, or dried) over juices, which have most of the fiber removed
• Fresh vegetables (Winter squash, peas, eggplant, beets, cabbage, broccoli, artichoke hearts, corn)
• Potatoes & sweet potatoes
• Dried beans
• Nuts

Melissa Marek is a graduate of Texas A&M University with degrees in both Nutritional Sciences and Food Science & Technology.  She has experience with recipe analysis for magazines and restaurants as well as with nutrition facts labeling for large corporations and private label companies. She is a registered dietitian at Axxya Systems, makers of Diet Analysis and Food Labeling software products. Contact her at mmarek [at] axxya [dot] com.

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Care for some water? No way, get me a Diet Coke, or a Coke Zero.

Water is for washing hands, not drinking. And regular soft drinks and juice are full of sugars and calories.

So you decided a long time ago to go with artificial sweeteners. After a while, you didn’t even notice the slightly different taste compared to sugar sweetened beverages. And, diet drinks are zero calories. Win-win. Both taste buds AND body are happy. A no-brainer, right?

Not so fast.

A fascinating article – Artificially Sweetened Beverages Cause for Concern – recently published in the Journal of the American Medical Association (JAMA), challenges the notion that artificial sweeteners are risk free.

The article’s author, David S. Ludwig, MD, PhD,  a Harvard professor and Founding Director of the Optimal Weight for Life (OWL) clinic at Children’s Hospital, Boston, makes three important points, especially in the context of artificially sweetened drinks:

1. Our body gets confused by artificial sweeteners – the dissociation between sweet taste and calorie intake may put the regulatory system that controls hunger and body weight out of sync, thus sabotaging weight loss plans. A study on rodents showed that those fed saccharin actually gained weight compared to rodents fed sucrose.

2. We’re “Infantilizing” our taste sense – Artificial sweeteners are a hundredfold sweeter than sucrose (table sugar). By getting ourselves used to so much sweet, normal sweet flavors, of fruit for example, become bland and so do other healthful foods such as grains and vegetables, thus reducing our willingness to consume them and ultimately the quality of our diet.

3. Long term effects unclear – while there have been many studies on artificial sweeteners and disease such cancer, very few focused on long term weight gain. A seven year study, (San Antonio Heart Study), showed a relationship between diet drink consumption and obesity, but the causation is not clear. Consumption of artificial sweeteners is growing yearly. According to Ludwig,

If trends in consumption continue, the nation will, in effect, have embarked on a massive, uncontrolled, and inadvertent public health experiment. Although many synthetic chemicals have been added to the food supply in recent years, artificial sweeteners in beverages stand out in their ability to interact with evolutionarily ancient sensorineural pathways at remarkably high affinity.

What to do at the supermarket:

Whether sweetened with sugar, or artificially, our body does not need anything but water. And while switching overnight from a life sin H2O seems impossible, you can opt for baby steps such as watering down juice, consuming soda only during predefined meals / weekly activities, and getting your sweet tooth filled with juicy fruits such as oranges, melons, pears, and apples. If money is your motivator – think about the $500 a year a family of four can save by just switching to tap water.

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Still recovering from the most recent UK study showing that organic food is no more nutritious than conventional, we read in the Chicago Tribune that peaches contain excessive amounts of pesticides, some above government safe levels.

It seems that peaches’ delicate constitutions, fuzzy skins and susceptibility to mold and pests cause them to both need and retain pesticides at impressive rates.

So there you go. Even if organic isn’t more nutritious, it’s probably healthier with respect to poison residues your body wont’ get. That’s not to say you should switch to consuming organic food exclusively. Peaches are an extremely sensitive crop. Not all fruits and vegetables are such pushovers.

What to do at the supermarket:

Here’s a short list of the DIRTY DOZEN fruits and vegetables that you can start with.

Apples, Bell Peppers, Celery, Cherries, Grapes, Nectarines, Peaches, Pears, Potatoes, Raspberries, Spinach, Strawberries

And for these items, don’t spend more for organic:

Asparagus, Avocado, Bananas, Broccoli, Cauliflower, Corn, Garlic, Kiwi, Mangoes, Onions, Peas, Pineapples.

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Those giant shiny apples and tomatoes stacked neatly at the produce stand at the supermarket are a marvel of nature. With a lot of help from man. And man’s chemicals.

In order to keep pests from blemishing your fruits and vegetables, farmers spend a fare share of their time and budget on hundreds of chemical solutions. Here are some crazy facts from a group called Pesticide Action Network:

1. 888 million lbs of pesticide are applied each year in the US – about 3 lbs per person.

2. Atrazine, a pesticide that has been banned in Europe, is found in 71% of US drinking water. It’s a hormone disruptor.

3. An average Amercian child gets over 5 “servings” of pesticide residue in their food and water, daily

4. A single strawberry can contain 22 different pesticide residues.

What you need to know:

The problem with pesticides is that they are persistent, they stay in our food even after vigorous washing. Some accumulate in our bodies over years. Not to mention the environmental impact in the soil and water sources. Or the poor farm workers who get sick after handling these toxic chemicals on a daily basis.

The folks at Pesticide Action Network have put together a searchable database where you can see which chemicals are used on which products, and the effect on our bodies. Quite scary.

The effect these residues have on fetuses, infants, and young children is much greater than on adults, so parents should be especially wary.

But please, don’t let this be your excuse not to eat fruit and vegetables! When put into the right context, it is much riskier to your health not to get the nutrients from produce than to be exposed to the pesticide residue.

What to do at the supermarket:

So what’s a worried parent to do?

Switching to organic food seems like a great solution, only it’s out of reach for most people due to the very high price of most organic vegetables, and even higher prices for organic fruit.

An approach taken by many people is selective organic consumption, choosing to go organic for the most heavily chemically drenched products, while sticking to conventional for the rest.

Here are the “dirty dozen” which are simply put, pesticide coated produce. you should buy these organic:

Apples, Bell Peppers, Celery, Cherries, Grapes, Nectarines, Peaches, Pears, Potatoes, Raspberries, Spinach, Strawberries

And for these items, don’t spend more for organic:

Asparagus, Avocado, Bananas, Broccoli, Cauliflower, Corn, Garlic, Kiwi, Mangoes, Onions, Peas, Pineapples

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