A Look at Lactose Intolerance
Lactose is the primary carbohydrate in milk. Cow's milk contains 4-5% lactose, whereas human milk contains almost twice that amount. Lactose provides 30-50% of the energy in milk, depending on the fat content (skim vs. homogenized). A number of individuals are affected by lactose in the diet, but there is a difference between intolerance and maldigestion.
Lactose maldigestion is "a disorder characterized by reduced digestion of lactose due to the low availability of the enzyme lactase." Lactose intolerance is "the term for gastointestinal symptoms (flatulence, bloating, abdominal pain, diarrhea, and 'rumbling in the bowel') resulting from the consumption of more lactose than can be digested with available lactase." In other words, intolerance refers to the symptoms of the maldigestive disorder caused by an insufficient enzyme required to hydrolyze lactose to galactose and glucose.
Genetic defects often cause a deficiency of lactase, as well as injuries to the mucosa lining of the intestines or with age (as we age our enzyme levels decrease). When lactose molecules remain in the intestine undigested, they absorb water and this can cause bloating, discomfort, cramping, diarrhea, and nausea. Bacterial fermentation along the intestinal tract that produces lactic acid and gas is also a characteristic of lactose intolerance.
It is estimated that one in three adults suffer from lactose maldigestion and it appears to be inherited in about 80% of the world's population, including most Greeks, Asians, and Africans.
Those who suffer from any discomfort after eating or drinking milk products can consume foods labeled lactose free or take an enzyme preparation such as Lact-Aid to aid digestion. Do note, however, that lactose intolerance varies and the amount of lactose allowed in a diet depends on an individual's tolerance. Some people cannot tolerate milk, ice cream, or creamed foods, but they can eat aged cheeses and yogurt (some brands are better tolerated than others) without difficulty. Lactose products include:
Grain Products: Breads and muffins made with milk, pancakes, and waffles; cake or cookie mixes, pie crusts made from butter or margarine, French toast, some dry cereals, and biscuits.
Fruits and Vegetables: Canned and frozen fruits or vegetables processed with lactose, buttered, creamed, or breaded vegetables.
Milk and Milk Products: Milk (dried, evaporated, nonfat, and whole), yogurt, ice cream, sherbet, cheese, custard, puddings, and whey and casein proteins manufactured with lactobacillus/acidophilus culture.
Meat and Meat Alternatives: Meats, fish, or poultry creamed or breaded, sausage and other cold cuts containing nonfat-milk solids, some peanut butter, and omelets and soufflés containing milk.
Other: Instant coffees, margarine, dressings, sugar substitutes containing lactose, toffee, chocolate, creamed soups, butter, cream, some cocoas, caramels, chewing gum, some vitamin-mineral supplements, some drugs, peppermint, and butterscotch.
Since calcium is a major component of many lactose-containing foods, it is vital that individuals who are lactose-intolerant receive adequate calcium from other foods (in fact, milk is not an ideal source of calcium, as will be discussed in Chapter Seven). These include almonds, brazil nuts, caviar, kelp, canned salmon, canned sardines, shrimp, soybeans, and turnip greens, broccoli, strawberries, and leafy greens. Leafy greens are currently under suspicion as a viable calcium source since greens are now believed to contain certain calcium binding agents that prevent calcium absorption.
You may publish this article in your newsletter, on your web site, or other publications, so long as the article's content is not altered and the resource box is included. Add byline and active link. Notification of the use of this article is appreciated, but not required.
Brian D. Johnston is the Director of Education and President of the I.A.R.T. fitness certification and education institute. He has written over 12 books and is a contributing author to the Merck Medical Manual. An international lecturer, Mr. Johnston wears many hats in the fitness and health industries, and can be reached at info@ExerciseCertification.com. Visit his site at http://www.ExerciseCertification.com for more free articles.
Water - The Natural Choice
Proper hydration is extremely important during exercise. Adequate fluid intake for athletes, even the recreational kind, is essential to comfort, performance and safety.
Why People Get Sick
The body is a marvelous creation, a carbon, oxygen combustion machine, constantly burning fuel, disposing of the waste products of combustion, and constantly rebuilding tissue by replacing worn out, dead cells with new, fresh ones.Every seven years virtually every cell in the body is replaced, some types of cells having a faster turnover rate than others, which means that over a seven year period several hundred pounds of dead cells must be digested (autolyzed) and eliminated.
The Dangers of Honey
Before we get to honey we have a question from one of our readers.Pam asks:What is your opinion of Splenda?Answer:Splenda is made by chlorinating sugar (sucrose).
Snack Attack - How to Keep Your Hunger Between Meals from Getting the Best of You
The Benefits of SnackingYou may feel regretful about snacking, but snacks aren't necessarily bad for you.In fact, mini-meals several times a day can be beneficial.
Ayurvedic Nutrition: Let Your Food Be Your Medicine
It is ironic how something as obvious as nutrition has become overlooked in the modern health care system, and how in the name of convenience our fast paced society has given way to fast foods, microwaves, quick fix medicines, and eating on the run. Fortunately, there is a growing focus in the important role that nutrition plays in maintaining good health.
Why are Free Form Essential Amino Acids Necessary and What to Look For!
1. Look for high quality, crystalline, free-form, amino acids (AAs) Most amino acid blends on the market are actually reduced milk or soy proteins.
Fructose Short-Circuits Glycolysis
First some terminology.Fructose .
Help Your Heart Grow
I turned into my parents' driveway in Maryland and parked the car. Before I could even step out and close the door, Mom flew out of the backyard, gesturing frantically.
How Food Affects Mood
Everyone can benefit from understanding how food affects our mood "Let food be thy medicine and medicine be thy food," wrote the eminent Greek physician Hippocrates during the dawn of western medicine. We took his advice.
Healthy Aging - The Clean-Meat Connection
It is shocking how many people are not taking advantage of the lessons from 21st Century research on cellular health. The syntax of disease is known by many researchers; and many of them are telling you what you can do to protect yourself.
Constipation is the passing of dry, hard faeces fewer than three times a week. Individuals who have constipation may find it painful and difficult to have a bowel movement, also other symptoms include feeling sluggishness, bloated and uncomfortable.
Creating Your Target of Health
Creating Your Target is easy.What I use to help create these targets is what I call SMARTS targets SMARTS stands for:Simple, Sensory, and Specific Measurable and Meaningful As If Now Realistic Time Framed Smiley FactorSome more about what these all mean:"S": Simple is exactly that.
Seasonings: Add More Than Just Flavor
Besides providing taste, color, and aroma, certain seasonings can also add health to your meals. Herbs and spices contain phytochemicals which are natural health promoting substances and have been found to protect us against diseases such as cancer and heart disease.
How Good Is Your Health?
It is a question we must ask ourselves continually if we want to live a healthy life. Your health is your most prized possession.
Water And Good Hydration
The key to good hydration is drinking a lot of water before, during and after any workout or activity. Water is essential for proper bodily function.
REAL Summer Foods
Fire ElementAccording to Traditional Chinese Medicine (TCM) there are five elements that contribute to all activities: TREE / WOOD, FIRE, SOIL / EARTH, METAL and WATER.Fire is the element of summer ? so how can this help to put more of YOU in summer? The more you use EnergyRich Seasonal Foods (rather than associational season foods - a-hem like, maybe, ice-cream?), the more energy you have available for fun!Fire Foods - to Keep You Cool1.
Why Many Fat Free Diets Do Not Work
Most people understand that it is wise to limit the amount of fat grams in their daily diet. The dietary reference intake amount for an adult ranges from 20% to 35%[i] of daily calories; or about 44 to 55 grams per day.
Why Fad Diets Don't Work
Fad diets have been around for more than 50 years and no matter how many come and go, we are always intrigued and excited by the next one feeling almost sure this will be the one to work. And they do work.
What is the Atkins Diet and How Can It Help You?
What is the Atkins diet and how can it help you?When Dr Robert Atkins first published his book,"Dr Atkins Diet Revolution", in 1972 the broad medical and nutritional community dismissed it as just another quack diet plan.Thirty years later, Dr Atkins nutritional theories have found wide spread support in scientific research circles, while creating a legion of followers who have adopted low-carb eating as a way of life.
Free List of Fat Burning Foods
This free list of fat burning foods will help you make the right choices to burn off more fat than you ingest by eating them. The fat burning secret to losing weight is to eat and drink until you are full and satisfied, choosing foods that burn more calories than you consume.
|home | site map|