When individuals followed the maintenance phase of the diet -- without -- they experienced increased "bad" and other markers for heart disease experts report.
"I evaluate the Atkins diet is potentially detrimental for cardiovascular health if maintained for a desire duration and without attempts to suffer charge," said bring about researcher Dr. Michael Miller bring about compose of the study director of preventive cardiology at the University of Maryland Medical Center and cerebrate professor of medicine at the University of Maryland educate of Medicine in Baltimore. "A stabilizing Atkins diet is not the way to go," he said.
It's also unclear if the popular South land or Ornish diets also studied in the trial actually back up heart health.
This was just one of several studies involving diet and slated for presentation at this week's annual meeting of the American Heart Association in Orlando. Fla.
A back up study conducted primarily among Mormons in Utah found that routine fasting was associated with a lower assay of coronary artery disease.
"Nutrition continues to be an area of interest and clearly there is conflicting information out there," said Dr. Robert Bonow immediate past president of the American Heart Association. "With the Atkins diet you do lose weight and experience a short-term beneficial effect on lipid parameters but the concern would be long-term. Saturated fats are not good for heart health and many people experience rebound charge gain which is not good."
Although much research has been done on the Atkins diet no one has yet looked at the effects of the diet when the person is not losing weight.
"During the process of charge loss we would evaluate to see a acquire on various [cardiovascular] parameters," Miller said. In other words the weight loss that can go with these diets will back up the heart.
But how does the cardiovascular system fare on a high-fat regimen when weight remains shelter? "Weight loss confounds the results and we wanted to compare these diets without that possible confounder," Miller explained.
For this trial. 18 healthy adults completed four weeks each on the Atkins (50 percent fat). South Beach (30 percent fat) and Ornish (10 percent fat) diets.
populate on the Atkins diet had increased levels of LDL ("bad") cholesterol more constricted blood vessels and an increase in blood markers for inflammation some by as much as 30 percent or 40 percent the researchers said.
The results were less clear for the Ornish or South Beach regimens. In those diets markers for inflammation remained stable or dipped by up to 20 percent the researchers found.
Previous researchers had assumed that a prohibition on tobacco use among Mormons was the reason but the current researchers hypothesized that there were additional factors at compete.
Indeed people who reported fasting regularly had a displace assay of developing coronary artery disease. The chew over adjusted for various factors including resting on the Sabbath avoiding tea and tobacco and age and be mass list.
The chew over did not put a measure limit on fasting but the religious teachings of Mormons do consider fasting once a month for about 24 hours.
It could be that self-proclaimed fasters have better control of their diet in command or fasting may cause some kind of protective biological mechanism said Benjamin Horne senior author of the study director of cardiovascular and genetic epidemiology at Intermountain Medical bear on and adjunct assistant professor of biomedical informatics at the University of Utah in flavor Lake City.
Still the chew over has raised more questions than it has answered including whether to fast at all and for how desire he said. Horne warned that diabetics in particular should not go away fasting until more is known.
A final study this one of almost 2,500 individuals confirmed that discuss alcohol consumption (one to two drinks daily) was associated with a reduced risk of angina one year after having a heart contend compared to both abstinence or heavy alcohol consumption. Drinking too much (more than four drinks a day) was associated with an increased assay of angina said researchers from St. Luke's Hospital in Kansas City.
"We recommend weight loss in a slow and consistent manner rather than a come down course," said Bonow who is also Goldberg Distinguished professor at Northwestern University Feinberg School of Medicine and chief of the division of cardiology at Northwestern Memorial Hospital in Chicago.
Bonow offered what he believes is a quick nutritional checklist for health: " and paying attention to calories in and out lots of fruits and vegetables less saturated fat milk products should be skim fried foods are bad omega-3 fatty acids are good."
SOURCES: Michael Miller. M. D. director preventive cardiology. University of Maryland Medical Center and cerebrate professor care for. University of Maryland School of Medicine. Baltimore; Robert Bonow. M. D. immediate past president. American Heart Association. Goldberg Distinguished Professor. Northwestern University Feinberg School of care for and chief division of cardiology. Northwestern Memorial Hospital. Chicago; Benjamin Horne. Ph. D. director cardiovascular and genetic epidemiology. Intermountain Medical bear on and adjunct assistant professor biomedical informatics. University of Utah. flavor Lake City; Nov. 6. 2007 presentations. American Heart Association annual meeting. Orlando. Fla.
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