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Paleo Diet May Increase Your Risk of Heart Disease
The meat- and saturated fat-heavy Paleolithic or "Paleo" diet, inspired by what our cavemen ancestors ate hundreds of thousands of years ago before the advent of farming, has become popular in recent years for its purported weight loss and gut health benefits. But new research suggests that following the diet too strictly may increase risk of heart disease.
According to a study published in the European Journal of Nutrition by researchers at Australia's Edith Cowan University, Paleo adherents may have twice the amount of a blood biomarker strongly linked with heart disease, trimethylamine-n-oxide (TMAO), in their bodies. This is likely the first major study to test the effects of the Paleo diet on the human gut microbiome.
"Many Paleo diet proponents claim the diet is beneficial to gut health, but this research suggests that when it comes to the production of TMAO in the gut, the Paleo diet could be having an adverse impact in terms of heart health," lead researcher and Edith Cowan University lecturer Dr. Angela Genoni said in a press release.
"We also found that populations of beneficial bacterial species were lower in the Paleolithic groups, associated with the reduced carbohydrate intake, which may have consequences for other chronic diseases over the long term."
TMAO is produced by gut bacteria called Hungatella during metabolism of certain foods such as meats and eggs, and has been shown to impact metabolism of cholesterol, including cholesterol deposition and removal from artery wall cells. LDL Cholesterol build-up can clog or harden arteries, leading to heart disease and heart attacks. Newsweek cited previous studies which have shown that higher TMAO levels are associated with a significantly increased risk of suffering a major cardiovascular event.
The study included 44 people who follow the Paleo diet and 47 people who followed a standard diet based on national health guidelines. According to the Mayo Clinic, the typical Paleo diet avoids carbs, legumes, dairy and processed foods in favor of protein-dense foods such as lean red and white meat, fish, vegetables and certain fruits.
Of the Paleo diet followers, 22 were further categorized as "strict" followers who ate less than one serving each day of grains and dairy. The rest were deemed "Pseudo-Paleo" dieters, who followed the diet more loosely. Over the course of a year, the researchers analyzed biological data, samples and the diets of both groups.
The researchers found that the Paleo diet followers had a higher count of TMAO-producing Hungatella bacteria. The "strict" Paleo followers had the highest levels of blood TMAO levels, while those who loosely followed the diet but ate more grains and dairy had lower levels of TMAO in their blood comparable to those following the standard diet.
While noting the need for further research, the authors wrote that the results support keeping gut-regulating, heart-healthy grains in your diet and reconsidering the amount of meat recommended by the Paleo diet.
"Because [trimethylamine N-oxide] is produced in the gut, a lack of whole grains might change the populations of bacteria enough to enable higher production of this compound," Genoni said. "Additionally, the Paleo diet includes greater servings per day of red meat, which provides the precursor compounds to produce [trimethylamine N-oxide] and Paleo followers consumed twice the recommended level of saturated fats, which is cause for concern."
Cardiovascular disease is the top cause of death globally, according to the World Health Organization.
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As a growing number of states move to pass laws that would criminalize pipeline protests and hit demonstrators with years in prison, an audio recording obtained by The Intercept showed a representative of a powerful oil and gas lobbying group bragging about the industry's success in crafting anti-protest legislation behind closed doors.
Speaking during a conference in Washington, DC in June, Derrick Morgan, senior vice president for federal and regulatory affairs at the American Fuel & Petrochemical Manufacturers (AFPM), touted "model legislation" that states across the nation have passed in recent months.
AFPM represents a number of major fossil fuel giants, including Chevron, Koch Industries and ExxonMobil.
"We've seen a lot of success at the state level, particularly starting with Oklahoma in 2017," said Morgan, citing Dakota Access Pipeline protests as the motivation behind the aggressive lobbying effort. "We're up to nine states that have passed laws that are substantially close to the model policy that you have in your packet."
Big Oil is now using its political power to try and criminalize protests of oil & gas infrastructure.— Friends of the Earth (@foe_us) August 19, 2019
"This legislation has potential to punish public participation and mischaracterize advocacy protected by the First Amendment."https://t.co/bmiHjONEhy
The audio recording comes just months after Texas Gov. Greg Abbott signed into law legislation that would punish anti-pipeline demonstrators with up to 10 years in prison, a move environmentalists condemned as a flagrant attack on free expression.
"Big Oil is hijacking our legislative system," Dallas Goldtooth of the Indigenous Environmental Network said after the Texas Senate passed the bill in May.
As The Intercept's Lee Fang reported Monday, the model legislation Morgan cited in his remarks "has been introduced in various forms in 22 states and passed in ... Texas, Louisiana, Oklahoma, Tennessee, Missouri, Indiana, Iowa, South Dakota, and North Dakota."
"The AFPM lobbyist also boasted that the template legislation has enjoyed bipartisan support," according to Fang. "In Louisiana, Democratic Gov. John Bel Edwards signed the version of the bill there, which is being challenged by the Center for Constitutional Rights. Even in Illinois, Morgan noted, 'We almost got that across the finish line in a very Democratic-dominated legislature.' The bill did not pass as it got pushed aside over time constraints at the end of the legislative session."
Many of the state bills restricting the right to protest have been "drafted by companies and passed through groups like ALEC, the secretive group of corporate lobbyists trying to rewrite state laws to benefit corporations over people." @greenpeaceusa https://t.co/ZxpTjWdrwT— Stand Up To ALEC (@StandUpToALEC) May 6, 2019
Reposted with permission from our media associate Common Dreams.