Home
>
Nutrition
>
A Look at Lactose Intolerance

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 souffl?s 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 info@exercisecertification.com for more free articles.

limo prices to midway Crystal Lake west of Randal .. Lockport Chicago limo O’Hare

In The News:

Creating an email alias can help clean up your inbox by organizing emails based on purpose, like creating different aliases for shopping, newsletters and work.

A multipurpose robotic system promises to transform how items are stacked onto pallets, aiming to maximize space utilization and reduce shipping costs.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

The number of people affected by a UnitedHealth data breach in February 2024 was actually higher than previously reported and was the largest medical data breach in U.S. history.

A phishing campaign uses Google Calendar to schedule fake meeting invitations that appear legitimate, redirecting targets to phishing sites.

Toll road text scam: Fake messages claim unpaid fees, seek payment via fraudulent links. Kurt “CyberGuy" Knutsson says this scam is becoming increasingly sophisticated and widespread.

Kurt “CyberGuy" Knutsson says these steps ensure that your friends and family get to the exact moment you want them to see. Try it out and streamline your sharing experience.

Tech expert Kurt “CyberGuy" Knutsson offers tips on how to protect your identity: Be vigilant, monitor accounts, use smart security, know theft response.

Tech expert Kurt “CyberGuy" Knutsson says cybercriminals are exploiting iMessage phishing protection, tricking users to reactivate links.

It's hard to imagine life without in-flight Wi-Fi these days – but sky-high web surfing comes with its own set of privacy concerns. Here's how to protect yourself.

Over 400,000 cases of credit card fraud were reported in 2024 to the Federal Trade Commission. The CyberGuy explains how to protect against becoming another victim.

A nondescript metal box transforms into a fully functional electric motorcycle that blurs the line between vehicle and urban infrastructure.

Many apps unrelated to location still ask users for tracking permission, and Texas Attorney General Ken Paxton has filed a lawsuit seeking to end this alleged practice by Allstate.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Melody, the artificial intelligence-powered robot, is life-sized and represents a move toward creating robots that resemble people in appearance and interaction.

Here are five easy smartphone rules from the National Security Agency that you can follow to better protect your mobile device from hackers and scammers.

A U.S. robotics company has developed "Jennie," a robotic pet powered by artificial intelligence that's designed to comfort those facing mental health challenges.

Healthcare records for more than 184 million Americans were breached in 2024, but you can take steps to minimize that risk. Kurt the CyberGuy explains.

The Skyrider X1 from Rictor claims to be the "first amphibious flying passenger motorcycle," and it combines land and air travel in one sleek design.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Home inventory and restoration apps help itemize and track every item in your home in the event you have to make an insurance claim after a natural disaster.

The White House launched a new cybersecurity safety label, the U.S. Cyber Trust Mark, intended to help consumers make informed decisions on smart device safety.

Today's tech can help make life so much easier — if you know how to use it. Here are a few tips on the quickest and best ways to make your phone, laptop and other devices work for you.

Tech expert Kurt “CyberGuy" Knutsson offers Windows 11 restart fixes: Update drivers, run system scans and check hardware.

Sony and Honda's Afeela 1 EV launches with advanced tech and entertainment for $89,900. Tech expert Kurt “CyberGuy" Knutsson gives his takeaways.

A Look at Lactose Intolerance

Nutrition