More than twice the amount of key biomarker that is closely related to heart disease has been found in people's blood on paleo diet.
Researchers at Edith Cowan University have just completed the first global study of the impact of burned diet on intestinal bacteria.
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The controversial paleo (or "cave man") diet favors eating meat, vegetables, nuts and limited fruit, which excludes cereals, legumes, dairy products, salt, refined sugar and processed oils.
ECU researchers compared 44 people to the 47th diet to the traditional Australian diet.
They measured the amount of trimethylamine-n-oxide (TMAO) in the blood of the participants. High levels of TMAO, an organic compound produced in the intestine, are associated with an increased risk of cardiovascular disease.
Heart disease kills one Australian every 12 minutes.
It's not good for the hose
Principal Investigator Dr. Angela Genoni of the ECU School of Medical and Health Sciences said:
"Those who promote burning nutrition often cite it as beneficial to your bowel health, but this research suggests there are negative differences in those who followed the diet pattern."
She said that the reason why TMAO was so high in people at Paleol's diet was that it was a bigger intake of red meat, but also because of the lack of full grain intake.
"Paleo diet excludes all cereals and we know that whole grains are a fantastic source of resistant starch and many other fermentable fibers that are vital to the health of your intestinal microbial," Dr. Genoni said.
"Since TMAO is produced in the intestines, a lack of whole grains can alter the population of bacteria enough to allow greater production of this compound.
"In addition, the burned diet includes larger meals a day from red meat, which provides the precursor compounds for the production of TMAOs."