When individuals followed the maintenance phase of the diet -- without -- they experienced increased "bad" and other markers for heart disease experts inform.
"I evaluate the Atkins fast is potentially detrimental for cardiovascular health if maintained for a desire duration and without attempts to suffer weight," said bring about researcher Dr. Michael Miller bring about author of the study director of preventive cardiology at the University of Maryland Medical Center and associate professor of medicine at the University of Maryland educate of care for in Baltimore. "A stabilizing Atkins fast 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 promote 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 second chew over 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 arouse 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 charge and experience a short-term beneficial cause on lipid parameters but the concern would be long-term. Saturated fats are not good for heart health and many people experience bound weight obtain which is not good."
Although much investigate has been done on the Atkins fast no one has yet looked at the effects of the fast when the person is not losing charge.
"During the affect of weight loss we would evaluate to see a benefit on various [cardiovascular] parameters," Miller said. In other words the charge loss that can come with these diets will help the heart.
But how does the cardiovascular system fare on a high-fat regimen when charge remains stable? "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 daub markers for inflammation some by as much as 30 percent or 40 percent the researchers said.
The results were less alter for the Ornish or South Beach regimens. In those diets markers for inflammation remained shelter 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 lower assay of developing coronary artery disease. The study adjusted for various factors including resting on the Sabbath avoiding tea and tobacco and age and be mass index.
The study did not put a time limit on fasting but the religious teachings of Mormons do include fasting once a month for about 24 hours.
It could be that self-proclaimed fasters undergo better control of their diet in general 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 Center and adjunct assistant professor of biomedical informatics at the University of Utah in Salt Lake City.
Still the study has raised more questions than it has answered including whether to fast at all and for how long 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 assay of angina one year after having a heart attack compared to both abstinence or heavy alcohol consumption. Drinking too much (more than four drinks a day) was associated with an increased risk of angina said researchers from St. Luke's Hospital in Kansas City.
"We recommend charge 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 educate of care for 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 associate professor care for. University of Maryland School of care for. 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 Center and adjunct assistant professor biomedical informatics. University of Utah. Salt Lake City; Nov. 6. 2007 presentations. American Heart Association annual meeting. Orlando. Fla.
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