Avoiding red or processed meat doesn’t seem to give health benefits | New Scientist

Many health bodies have said in the past that people should limit their red meat intake

Owen Franken/Corbis Documentary/Getty

Owen Franken/Corbis Documentary/Getty

There are no health reasons to cut down on eating red or processed meat, according to a new review of the evidence. The claims, which contradict most existing dietary advice, come from a review of existing studies led by the Spanish and Polish Cochrane Centers, part of a global collaboration for assessing medical research.

Numerous health bodies have said for decades that we should limit our intake of red meat because it is high in saturated fat, thought to raise cholesterol levels and cause heart attacks. More recently, both red and processed meat have been linked with cancer.

In the latest review, though, the authors came to a different conclusion because they considered separately the two main kinds of research. The best evidence comes from randomised trials. In these, some participants are helped to change their diet in a certain way, such as eating less meat, and the rest aren’t. At the end, the health of the people in the two groups is compared.

But such trials are costly and hard to do. According to one estimate, only about 5 per cent of nutrition studies are large, good-quality randomised trials. It is much more common to do research that just observes what people choose to eat undirected. Known as observational studies, these are notoriously open to bias and can give misleading results.

Bradley Johnston of Dalhousie University in Halifax, Canada, and his colleagues first reviewed all previous observational studies looking at the health impact of eating red or processed meat. These pointed to a “very small” adverse effect on deaths, heart disease and cancer.

Then they separately reviewed the 12 randomised trials that have been done in this area, and found that there was little or no health benefit for people who cut down on eating these meats. Based on these findings, the authors conclude that people should “continue to eat their current levels of red and processed meat unless they felt inclined to change them themselves”. However, they added that some might want to change their diet because of animal welfare or environmental reasons.

“It may be time to stop producing observational research in this area,” Tiffany Doherty from Indiana University’s Pediatric and Adolescent Comparative Effectiveness Research team wrote in an accompanying editorial.

Duane Mellor, a spokesperson for the British Dietetic Association, says people shouldn’t take the advice as a green light to eat more red meat. “What it doesn’t say is that we can tear up the guidelines and start eating twice as much meat. But red meat three times a week is not a problem.”

Journal reference: Annals of Internal Medicine, DOI:

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8 Celebrities Who Used Invisalign Treatment

A lot of people feel that, once they are adults or older teens, the time to improve their smiles with braces has gone by. But, thanks to advanced cosmetic dentistry, Invisalign allows many people to discreetly straighten their teeth without calling attention to the work.

Not convinced? Invisalign dentists straightened the smiles of all these celebrities while they were in the public eye:

1. Khloe Kardashian’s Invisalign Treatment

As a reality star, Khloe Kardashian is rarely far from the public view, which makes her self-improvement projects all the more noticeable. She’s slimmed down significantly during her years in the spotlight, shedding over 30 pounds with the help of a personal trainer. She decided to straighten her smile, as well, and had her braces put on last year at the age of 28.

Invisalign-Treatment-Justin2. Justin Bieber’s Invisalign Treatment

This Baby singer was still a teenager when he opted for clear Invisalign braces. In a Youtube video, he praised the braces’ unobtrusive look. The unobtrusive nature of the braces meant that they could really only be seen when he took them out to show them off.

Invisalign-Treatment-Katherine3. Katherine Heigl’s Invisalign Treatment

Actress Katherine Heigl began wearing Invisalign in 2007 in preparation for her wedding. With these discreet braces, she could keep attention on her instead of on the corrections to her teeth. These days, the former Grey’s Anatomy star is all smiles as she prepares for the premiere of her upcoming TV series State of Affairs.

Invisalign-Treatment-Tom4. Tom Cruise’s Invisalign Treatment

Hollywood hunk Tom Cruise has always been famous for his smile. But, when the star began bringing his kids to the orthodontist in 2002, he discovered that his front teeth were not as straight as they could be. He chose a combination of Invisalign and ceramic brackets to keep his smile metal-free while straightening his teeth.

Invisalign-treatment-Gisele5. Gisele Bundchen’s Invisalign Treatment

Not even supermodels are born perfect! Gisele Bunchen told interviewers that she started wearing Invisalign because one of her teeth was moving and made her smile look less than perfect in pictures. She wore the braces only at night, taking advantage of the Invisalign system’s flexibility.

Invisalign-Treatment-Zac6. Zac Efron’s Invisalign Treatment

As this actor made the jump from teen heart throb in High School Musical to grown-up stunner in fare like The Neighbors, he decided that it was time for the slight gap between his front teeth to transition to a solid white smile, as well.

Invisalign-treatment-eva7. Eva Longoria’s Invisalign Treatment

This steamy star began wearing Invisalign at age 36 to straighten her bottom teeth. No longer spooked by a crooked smile, the star is working on a new horror TV series based on Latin American folk tales.

Invisalign-Treatment-Serena8. Serena Williams’ Invisalign Treatment

This powerful tennis player made sure that her smile was as strong as her serve by wearing Invisalign braces as a teenager. Years later, she has a straight and stunning smile, and continues to stack up the Grand Slam wins.

Are you ready to take on your insecurities and improve your smile? Talk to a local dentist about Invisalign in Mansfield. There are a number of highly qualified Mansfield MA dentists who can talk to you about whether these invisible braces are right for you.

This content was originally published here.