Showing posts with label nutrition. Show all posts
Showing posts with label nutrition. Show all posts

Monday, September 28, 2009

The Truth About Carbohydrates

The Truth about Carbohydrates

  • Carbohydrates are the body's ideal fuel for most functions. They supply the body with the energy needed for the muscles, brain and central nervous system. In fact, the human brain depends exclusively on carbohydrates for its energy.
  • Carbohydrates are found in fruits, vegetables, beans, dairy products, foods made from grain products, and sweeteners such as sugar, honey, molasses, and corn syrup.
  • The body converts digestible (non-fiber) carbohydrates into glucose, which our cells use as fuel. Some carbs (simple) break down quickly into glucose while others (complex) are slowly broken down and enter the bloodstream more gradually.
  • During digestion, all carbohydrates are broken down into glucose before they can enter the bloodstream where insulin helps the glucose enter the body’s cells. Some glucose is stored as glycogen in the liver and muscles for future use, like fueling a workout. If there is extra glucose, the body will store it as fat.

All carbohydrates are not created equal.
There are basically three types of carbohydrates:

1. Simple carbohydrates are composed of 1 or 2 sugar units that are broken down and digested quickly.

Recent research has shown that certain simple carbohydrate foods can cause extreme surges in blood sugar levels, which also increases insulin release. This can elevate appetite and the risk of excess fat storage.

2. Complex carbohydrates (also referred to as starch) are made up of many sugar units and are found in both natural (brown rice) and refined (white bread) form. They are structurally more complex and take longer to be broken down and digested.

Complex carbohydrate foods have been shown to enter the blood stream gradually and trigger only a moderate rise in insulin levels, which stabilizes appetite and results in fewer carbohydrates that are stored as fat. Unrefined or ‘whole grain’ carbohydrates found in products like brown rice, whole wheat pasta and bran cereals are digested slowly. They contain vitamins, minerals and fiber which promote health. Fiber and nutrient-rich vegetables, fruits and beans which are carbohydrates also have many important functions for the body and are important for good health.

3. Indigestible carbohydrates are also called fiber. The body is unable to breakdown fiber into small enough units for absorption. It is therefore not an energy source for the body but does promote health in many other ways.

Simple carbs, complex carbs, and fiber are found in many foods. Some provide important nutrients that promote health while others simply provide calories that promote girth.

  • Sugar, syrup, candy, honey, jams, jelly, molasses, and soft drinks contain simple carbohydrates and little if any nutrients.
  • Fruits contain primarily simple carbohydrate but also valuable vitamins, minerals, fiber, and water.
  • Vegetables contain varying amounts of simple and complex carbohydrates, vitamins, minerals, fiber, and water.
  • Legumes such as beans, peas, lentils and soybeans contain complex carbohydrates, fiber, vitamins, minerals, and protein.
  • Milk products contain simple carbohydrates along with protein, calcium and other nutrients.
  • Grain products contain complex carbohydrates, fiber, vitamins, minerals, and protein. The amounts vary depending on the type of grain used and the amount of processing. Selecting whole grain options whenever possible is recommended.

What You Should Know About Low-Carbohydrate Diets

Following an extremely low-carbohydrate diet is disastrous, dangerous, and above all—boring! Carbohydrates are NOT the enemy. Including the appropriate amounts and types of carbohydrate-rich foods in your diet is essential for long-term health and weight loss/maintenance.

The Body’s Immediate Reaction to Very Low Carbohydrate Diets

When there is a severe deficit of carbohydrates, the body has several immediate reactions:

* With no glucose available for energy, the body starts using protein from food for energy. Therefore this protein is no longer available for more important functions, such as making new cells, tissues, enzymes, hormones, and antibodies and the regulation of fluid balance.
* When carbohydrates are lacking, the body cannot burn fat in the correct way. Normally carbs combine with fat fragments to be used as energy. When carbs are not available, there is an incomplete breakdown of fat that produces a by-product called ketones. These ketones accumulate in the blood and in the urine causing ketosis, which is an abnormal state. Ketosis does cause a decrease in appetite because it's one of the body's protection mechanisms. It's an advantage to someone in a famine (which the body thinks it's experiencing) to lack an appetite because the search for food would be a waste of time and additional energy.
* Due to the lack of energy and the accumulation of ketones, low-carb diets are often accompanied by nausea, headaches, dizziness, fatigue, bad breath, and dehydration.
* Because of dehydration and a lack of fiber, constipation can result.
* Exercise and fitness performance is reduced on a low-carb diet. Do not be surprised if your energy level is so low that you cannot make it through your normal workout routine.

The Long-Term Effects of Low Carbohydrate Diets
When you severely restrict carbohydrates, your consumption of protein and fat increases, which has several long-term effects:

* The risk of many cancers increases when fruits, vegetables, whole grain products, and beans are eliminated from the diet.
* Protein foods are also high in purines, which are broken down into uric acid. Elevated levels of uric acid in the blood may lead to needle-like uric acid crystals in joints, causing gout.
* Kidney stones are more likely to form on high protein, ketosis-producing diets.
* Over time, high protein diets can cause a loss of calcium and lead to osteoporosis.
* The risk of heart disease is greatly increased on a low-carb diet that is high in protein, cholesterol, fat, and saturated fat. A temporary reduction in cholesterol levels may be experienced, but this is common with any weight loss.

The Million Dollar Question

How do you include carbohydrates in you diet in a safe, effective, and controlled way? The “Please KISS Me” (Please Keep It So Simple for Me) plan for carbohydrate control is a wonderful tool that only contains 3 simple rules:

RULE 1: Include the following in your diet:

* Fruits: 2-4 servings daily
* Vegetables: 3-5 servings daily
* Whole grain breads, muffins, bagels, rolls, pasta, noodles, crackers, cereal, and brown rice: 6-11 servings daily
* Legumes, beans and peas: 1-2 servings daily
* Low-fat and non-fat dairy products: 3 servings daily

RULE 2: Limit the following to less than 2 servings daily:

* Fruit Juice
* Refined and processed white flour products (bread, muffins, bagels, rolls, pasta, noodles, crackers, cereal)
* White rice
* French fries
* Fried vegetables

RULE 3: Eliminate the following from your diet or eat only on occasion:

* Sugary desserts, cookies, cakes, pies, candies
* Doughnuts and pastries
* Chips, cola and carbonated beverages
* Sugar, honey, syrup, jam, jelly, molasses

That’s it! A simple, effective carbohydrate-controlling plan that, when combined with your SparkDiet, allows you to reap the countless benefits of complex carbohydrates and fiber while enhancing your health and maintaining a healthy weight. The long term result will be a healthy you!

Eggs are Egg-cellent

Here are four ways eggs your health:

• Eggs are an excellent source of low-cost, high-quality protein. One large egg provides more than 6 grams of protein, yet contains only 75 calories. And the protein is "complete," providing all nine of the body's essential amino acids.
• Eggs are one of the best sources of choline. Found primarily in the egg yolk, one large egg provides 30% of the recommended daily allowance (RDA) of this essential nutrient, which plays an important role in brain health and the reduction of inflammation. Many people are deficient in choline, which is found in trace amounts of many different foods.
• Eggs are a great food for those trying to lose weight. Because of the high amount of quality protein in eggs, they make a very satisfying breakfast, which is especially useful for people trying to lose weight. Eating eggs for breakfast enhances weight loss by increasing satiety, resulting in better adherence to a reduced-calorie diet.
• Eggs protect eyesight. Egg yolks contain a highly absorbable form of vision-protective carotenoids like lutein and zeaxanthin, which help to prevent age-related macular degeneration and cataracts. Eggs increases blood levels of these nutrients without increasing cholesterol or triglyceride levels.

So how many eggs should you eat?

Just because something is good for you doesn't always mean that more of it is necessarily better. a couple of eggs a day, a few days a week, should be safe and health for most people. "One egg daily can easily be a part of a well-balanced, nutritious diet for healthy adults." An important exception is for diabetics, who experienced an increased risk of coronary artery disease when consuming greater than six eggs per week.

No matter what kind of eggs you choose to eat, be sure to follow proper handling and preparation guidelines to ensure that your eggs are safe to eat. Raw or improperly handled eggs can be a source of disease.

• Avoid raw eggs, and foods made with raw eggs (Caesar dressing, homemade mayonnaise, eggnog, and cookie dough). These foods are safe if a pasteurized egg product is used.
• Check the carton to be sure that the eggs you are buying are clean and free of cracks.
• Store eggs in the coldest part of the refrigerator (not in the door), and use within three to five weeks, or by the expiration date on the carton. Hardboiled eggs should also be stored in the refrigerator and used within one week.
• When cooking with eggs, don’t leave the carton on the counter during prep time. Take out the eggs you will use and return the carton to the refrigerator.
• Wash all surfaces, cooking utensils, and skin with warm, soapy water before and after handling eggs.
• Cook eggs until yolks are firm.
• Cook egg-containing dishes to at least 160 degrees Fahrenheit to destroy any bacteria safely.