Connect with us

Anglais

‘There is no validity’: Unproven blood tests for food sensitivity widely offered in Canada

Published

on

[ad_1]

Feeling fat, itchy or bloated? Got tummy trouble? Want to help your hair or fix your skin? Could what you’re eating be ailing you? That’s certainly the sales pitch from companies behind food sensitivity tests.

They’re often advertised as a quick solution to a range of health issues, including by two of Canada’s biggest labs — despite the fact the science behind these questionable tests has been discredited by medical groups around the world.

And consumers, including Laura Chapnick, are buying in.

While waiting for other blood tests and an ultrasound in a Dynacare clinic, Chapnick saw an ad stating that 45 per cent of people suffer from food intolerances. Desperate for answers to her ongoing stomach problems, Chapnick later asked to take the $325 food intolerance test.

She said she « genuinely believed that doing … the blood test was going to give me absolute factual answers that I needed. »

Laura Chapnick decided to ask for an IgG blood test for food sensitivities after seeing an ad in a Dynacare clinic. She was there for other blood tests and an ultrasound. (CBC)

Within weeks, she received a report outlining 26 foods she should reduce or eliminate altogether. Many were foods she had been eating regularly, including corn, potatoes, peanuts, wheat, milk and eggs.  

« These tests scared the crap out of me, » she said. « These food tests scared me into believing that whatever I put in my mouth was toxic. »

Grocery shopping and eating quickly became a challenge. « I felt like a prisoner in my own head almost, » Chapnick said, « and became very obsessive, trying to figure out what can I eat. »

  • Also on Marketplace this week: Investigating the rise of ‘tech abuse’ and the truth about popular (and pricey) ‘teatoxes.’ Watch at 8 p.m. Friday on CBC TV or online.

Chapnick is not alone. The value of the global food allergy and sensitivity industry is expected to hit a whopping $24.8 billion US by 2020. And with food sensitivity tests specifically ranging in cost from more than $100 to nearly $400, companies are cashing in on the craze.

Two of Canada’s biggest labs, Dynacare and LifeLabs, promote and offer something known as IgG food tests at their labs, marketed as a way to test for food sensitivities.

But medical experts, including the Canadian Society of Allergy and Clinical Immunology (CSACI), call IgG tests for food sensitivities « unvalidated, » and more than two dozen organizations warn about the misuse of such tests.

The reports being generated by the IgG test taken by Chapnick and countless others are being grossly misinterpreted, critics say.

Food sensitivities are different from food allergies. An allergy is an immediate, immune response, and foods like nuts and seafood are often known to cause allergic responses that can be life-threatening.

Sensitivities or intolerances, on the other hand, are not related to the immune system and often take hours, if not days, to take effect — and are therefore very difficult to diagnose.

Exposure not intolerance

Dr. Douglas Mack, a pediatric allergy, asthma and immunology specialist, argues the results of an IgG test are an indication that you had exposure to the foods — not an intolerance of them.

IgG tests measure levels of an antibody known as Immunoglobulin G — or IgG, for short.

« It should be used to track whether a patient actually is developing tolerance, not intolerance, » he said.

Dr. Douglas Mack is a pediatric allergy, asthma and immunology specialist. (Dave MacIntosh/CBC)

Interpreting the test otherwise is not only incorrect, but potentially hazardous to your health, Mack argues. By unnecessarily eliminating foods, he says he sees « kids that are coming in with nutritional deficiencies, with failure to grow very well. »

Removing foods from your diet could also lead to development of a food allergy, especially in children, says Mack. One young patient of his developed a milk allergy after eliminating it from his diet when a food sensitivity test suggested he had a milk intolerance.

« If these tests result in the harm of a child, we really gotta think twice about whether or not these labs should be offering these, » he said.

Putting the test to the test

To test the accuracy of these food sensitivity tests, Marketplace ran several different kinds on host Charlsie Agro, including drawing blood for the IgG tests offered by Dynacare and Rocky Mountain Analytical, which is owned by LifeLabs.

Both tests require a requisition from a naturopathic doctor or licensed physician. LifeLabs’ test is typically offered through naturopaths or other health outlets, however, while Dynacare’s food intolerance test is advertised and promoted directly to the consumer in its clinics.

The results from the Rocky Mountain Analytical test reported intolerances to 52 foods, while Dynacare reported 30 intolerances.

The tests offered by both Dyancare and Rocky Mountain Analytical require a requisition from a naturopathic doctor or licensed physician. (Tyana Grundig/CBC)

Before taking the tests, Agro had tracked what she was eating. Yet both tests reported intolerances to foods she regularly consumed, with absolutely no adverse reactions.

For example, Agro had a smoothie, which included flax seeds, for breakfast daily. Yet both tests suggested Agro is intolerant to flax. She also ate vegetable soup — containing barley, kidney beans and corn — without problem. Both IgG tests again claimed Agro is intolerant to these foods.

Both sets of lab results also showed Agro is « intolerant » of egg whites, all milks, wheat and gluten — all foods she eats regularly without issue.

What the results say

IgG is really a memory antibody, says Dr. David Stukus, an associate professor of pediatrics with the allergy and immunology department at the Ohio-based Nationwide Children’s Hospital.

« Measuring specific IgG levels merely detects that the person has eaten it at some point in the past, » he said. « It is a normal physiological response to eating. »

Stukus also said it wasn’t surprising that foods Agro hadn’t consumed in the weeks leading up to her blood tests showed up in her results.

One set of Charlsie Agro’s test results showed flax was a problem food for her. Yet she puts flax seed into her morning smoothie daily and has never felt negative effects. (John Lesavage/CBC)

Some foods « have cross-reactivity, » he said, meaning the proteins in one food are similar to the proteins in another.

« So it is possible that [the test] is picking up the memory antibody of other similar foods that have been eaten in the past, » Stukus said.  

He points to peanuts as a common example: If you’ve eaten peanut butter, your results might suggest you are intolerant to other legumes, like soy or other beans.

Serious side effects

More than 25 leading health organizations from around the world have warned about the misinterpretation of IgG tests, including a Health Canada scientist who wrote « these tests are not reliable and should not be recommended as a single diagnosis tool. »

Position papers from international medical communities have called the IgG blood test for food sensitivities « irrelevant, » « unvalidated » and « inappropriate, » warning that the test provides « false diagnoses » and that « the test should not be performed » for such a purpose.

There can also be adverse effects to drastically limiting your diet, including malnutrition and disordered eating patterns, says Stukus.

Chapnick said her eating patterns changed significantly after she got her IgG test back, which was done by Dynacare. So she turned to registered dietitian Elke Sengmueller to develop a diet she was comfortable with based on those results.

But Sengmueller says the radical changes the test was calling for would put Chapnick’s already compromised health in jeopardy.

« Because she had drastically cut down her foods already, because of her symptoms and her pain and not getting any answers, she was afraid to eat, » she said. « If she were to continue this … for an extended period of time, given her medical history I could see it … possibly leading to death. »

Registered dietitian Elke Sengmueller said the radical changes outlined in Chapnick’s IgG food test results made her client ‘afraid to eat.’ (CBC)

Mack says he is especially troubled by the IgG claims being made by LifeLabs and Dynacare through its marketing, as these are two of Canada’s largest blood labs, conducting millions of tests annually for everything from cancer screening to workplace drug testing.

« These are labs that we send patients to to get their bloodwork done for their iron, or to see if they have cancer, or to see whatever, » he said. « But in the same place, these labs are now offering a test for which there is no validity. »

Sengmueller echoes that concern.

« I’m surprised that an organization as reputable as Dynacare would be offering this to their clients, especially while they’re waiting to get their blood work done — they’re kind of a captive audience. It’s disappointing. »

Answering for IgG

When Marketplace asked the Ontario Ministry of Health about the manner in which IgG tests are being marketed in the province, a spokesperson said that labs are « operating as private businesses … and are allowed to provide a variety of tests that they are licensed to perform. »

Health Canada told Marketplace it has issued medical device licences for some IgG tests, but that none are « intended to be a single tool to be used for diagnosis of food intolerance. »

In its response, Dynacare said that « debate exists » about the use of the tests for food sensitivities, but  « peer-reviewed articles support the use of the food IgG test as an additional source of information. »

And the company said it « relies on the expertise of the ordering health professional to determine the appropriateness of a particular test for a particular patient. »

LifeLabs, the parent company of Rocky Mountain Analytical, also said that « numerous studies in peer-reviewed journals have shown the health benefits of removing IgG-reactive foods, » and that « a test does not need to be diagnostic to be clinically relevant and useful. »

Dynacare and LifeLabs provided those peer-reviewed studies to Marketplace, which were then analyzed by clinical epidemiologist and biostatician Jason Busse, DC, PhD. He found that « all of the studies were very problematic, » and said he was « amazed that many of them were published. »

If you’re worried about how the food you’re eating might be affecting you, health professionals say the best place to start is by keeping a detailed food and symptom diary, tracking what you’re eating and how it makes you feel. It’s important to visit a registered dietitian or family physician before starting any kind of elimination diet, they say.

[ad_2]

Source link

قالب وردپرس

Anglais

‘Business as usual’ for Dorel Industries after terminating go-private deal

Published

on

By

MONTREAL — Dorel Industries Inc. says it will continue to pursue its business strategy going forward after terminating an agreement to go private after discussions with shareholders.

« Moving ahead. Business as usual, » a spokesman for the company said in an email on Monday.

A group led by Cerberus Capital Management had previously agreed to buy outstanding shares of Dorel for $16 apiece, except for shares owned by the family that controls the company’s multiple-voting shares.

But Dorel chief executive Martin Schwartz said the Montreal-based maker of car seats, strollers, bicycles and home furniture pulled the plug on a deal on the eve of Tuesday’s special meeting after reviewing votes from shareholders.

“Independent shareholders have clearly expressed their confidence in Dorel’s future and the greater potential for Dorel as a public entity, » he said in a news release.

Dorel’s board of directors, with Martin Schwartz, Alan Schwartz, Jeffrey Schwartz and Jeff Segel recused, unanimously approved the deal’s termination upon the recommendation of a special committee.

The transaction required approval by two-thirds of the votes cast, and more than 50 per cent of the votes cast by non-family shareholders.

Schwartz said enhancing shareholder value remains a top priority while it stays focused on growing its brands, which include Schwinn and Mongoose bikes, Safety 1st-brand car seats and DHP Furniture.

Dorel said the move to end the go-private deal was mutual, despite the funds’ increased purchase price offer earlier this year.

It said there is no break fee applicable in this case.

Montreal-based investment firm Letko, Brosseau & Associates Inc. and San Diego’s Brandes Investment Partners LP, which together control more than 19 per cent of Dorel’s outstanding class B subordinate shares voiced their opposition to the amended offer, which was increased from the initial Nov. 2 offer of $14.50 per share.

« We believe that several minority shareholders shared our opinion, » said Letko vice-president Stephane Lebrun, during a phone interview.

« We are confident of the long-term potential of the company and we have confidence in the managers in place.”

Continue Reading

Anglais

Pandemic funds helping Montreal businesses build for a better tomorrow

Published

on

By

Many entrepreneurs have had to tap into government loans during the pandemic, at first just to survive, but now some are using the money to better prepare their businesses for the post-COVID future.

One of those businesses is Del Friscos, a popular family restaurant in Dollard-des-Ormeaux that, like many Montreal-area restaurants, has had to adapt from a sit-down establishment to one that takes orders online for takeout or delivery.

“It was hard going from totally in-house seating,” said Del Friscos co-owner Terry Konstas. “We didn’t have an in-house delivery system, which we quickly added. There were so many of our employees that were laid off that wanted to work so we adapted to a delivery system and added platforms like Uber and DoorDash.”

Helping them through the transition were emergency grants and low-interest loans from the federal and provincial governments, some of which are directly administered by PME MTL, a non-profit business-development organization established to assist the island’s small and medium-sized businesses.

Konstas said he had never even heard of PME MTL until a customer told him about them and when he got in touch, he discovered there were many government programs available to help his business get through the downturn and build for the future. “They’ve been very helpful right from day one,” said Konstas.

“We used some of the funds to catch up on our suppliers and our rents, the part that wasn’t covered from the federal side, and we used some of it for our new virtual concepts,” he said, referring to a virtual kitchen model which the restaurant has since adopted.

The virtual kitchen lets them create completely different menu items from the casual American Italian dishes that Del Friscos is known for and market them under different restaurant brand names. Under the Prasinó Soup & Salad banner, they sell healthy Greek options and their Stallone’s Sub Shop brand offers hearty sandwiches, yet the food from both is created in the same Del Friscos kitchen.

Continue Reading

Anglais

Downtown Montreal office, retail vacancies continue to rise

Published

on

By

Some of downtown Montreal’s key economic indicators are heading in the wrong direction.

Office and retail vacancies in the city’s central core continued to climb in the fourth quarter of 2020, according to a quarterly report released Thursday by the Urban Development Institute of Quebec and the Montréal Centre-Ville merchants association. The report, whose first edition was published in October, aims to paint a socio-economic picture of the downtown area.

The survey also found office space available for sublet had increased during the fourth quarter, which may foreshadow even more vacancies when leases expire. On the residential front, condo sales fell as new listings soared — a sign that the downtown area may be losing some of its appeal to homeowners.

“It’s impossible not to be preoccupied by the rapid increase in office vacancies,” Jean-Marc Fournier, the former Quebec politician who now heads the UDI, said Thursday in an interview.

Still, with COVID-19 vaccinations set to accelerate in the coming months, “the economic picture is bound to improve,” he said. “People will start returning downtown. It’s much too early to say the office market is going to disappear.”

Public health measures implemented since the start of the pandemic almost a year ago — such as caps on office capacity — have deprived downtown Montreal of more than 500,000 workers and students. A mere 4,163 university and CEGEP students attended in-person classes in the second quarter, the most recent period for which figures are available. Border closures and travel restrictions have also brought tourism to a standstill, hurting hotels and thousands of local businesses.

Seventy per cent of downtown workers carried out their professional activities at home more than three days a week during the fourth quarter, the report said, citing an online survey of 1,000 Montreal-area residents conducted last month.

Continue Reading

Chat

Sex2 semaines ago

Dix films avec des scènes de sexe non simulées qui ont fait polémique

Sex2 semaines ago

Sexe et cannabis : mélange miraculeux ou poison pour le couple ?

Sex2 semaines ago

Chantage émotionnel, dénigrement, harcèlement sexuel : Une jeune scientifique écrit aux comités nationaux d’éthique

Sex2 semaines ago

10 films sur le sexe et le plaisir pour oublier la distanciation sociale

Sex2 semaines ago

Les meilleurs sextoys pour le clitoris

Sex2 semaines ago

Dua Lipa, la reine du melting-pop qui allège le quotidien confiné de ses millions de fans

Sex2 semaines ago

Une série d’ici primée à l’étrange

Technologie4 semaines ago

TELUS adopte une nouvelle promesse de marque

Technologie4 semaines ago

La tech agricole Farmers Edge entre en Bourse à 18 fois ses revenus

Technologie4 semaines ago

NEC Canada accueille Combat Networks en tant que revendeur officiel de UNIVERGE® BLUE CLOUD SERVICES

Technologie4 semaines ago

La relance économique sera verte dans le Bas-Saint-Laurent

Technologie4 semaines ago

Ottawa injecte 2,75 milliards $ pour électrifier la flotte d’autobus au pays

Technologie4 semaines ago

L’entreprise montréalaise Native Touch fait l’acquisition du studio Candy Banners

Actualités4 semaines ago

Lionbridge conclut la vente de sa division d’intelligence artificielle (IA) à TELUS International

Actualités4 semaines ago

Le rôle stratégique et essentiel des métaux rares pour la santé

Actualités4 semaines ago

«Crypto-art» : l’œuvre numérique de la chanteuse Grimes vendue 6 millions de dollars

Actualités4 semaines ago

Un rapport révèle des inégalités pour les femmes de couleur dans les postes de direction canadiens qui font écho au secteur de la technologie

Actualités4 semaines ago

La demande de main-d’œuvre des startups canadiennes montre des signes de reprise au quatrième trimestre: rapport

Actualités4 semaines ago

En attendant la fibre optique

Affaires4 semaines ago

L’Alberta demande à Ottawa d’investir des milliards dans la capture du carbone

Anglais2 années ago

Body found after downtown Lethbridge apartment building fire, police investigating – Lethbridge

Styles De Vie2 années ago

Salon du chocolat 2018: les 5 temps forts

Anglais2 années ago

This B.C. woman’s recipe is one of the most popular of all time — and the story behind it is bananas

Santé Et Nutrition2 années ago

Gluten-Free Muffins

Anglais2 années ago

27 CP Rail cars derail near Lake Louise, Alta.

Anglais2 années ago

Man facing eviction from family home on Toronto Islands gets reprieve — for now

Santé Et Nutrition2 années ago

We Try Kin Euphorics and How to REALLY Get the Glow | Healthyish

Anglais2 années ago

Ontario’s Tories hope Ryan Gosling video will keep supporters from breaking up with the party

Anglais2 années ago

A photo taken on Toronto’s Corso Italia 49 years ago became a family legend. No one saw it — until now

Anglais3 années ago

Condo developer Thomas Liu — who collected millions but hasn’t built anything — loses court fight with Town of Ajax

Styles De Vie3 années ago

Renaud Capuçon, rédacteur en chef du Figaroscope

Anglais2 années ago

This couple shares a 335-square-foot micro condo on Queen St. — and loves it

Mode2 années ago

Paris : chez Cécile Roederer co-fondatrice de Smallable

Anglais2 années ago

Ontario Tories argue Trudeau’s carbon plan is ‘unconstitutional’

Styles De Vie2 années ago

Ford Ranger Raptor, le pick-up roule des mécaniques

Affaires2 années ago

Le Forex devient de plus en plus accessible aux débutants

Anglais2 années ago

100 years later, Montreal’s Black Watch regiment returns to Wallers, France

Technologie2 années ago

YouTube recommande de la pornographie juvénile, allègue un internaute

Anglais2 années ago

Trudeau government would reject Jason Kenney, taxpayers group in carbon tax court fight

Anglais2 années ago

Province’s push for private funding, additional stops puts Scarborough subway at risk of delays

Trending