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Wednesday, July 16, 2008 ATLANTA — The Atkins diet may have proved itself after all: A low-carb diet and a Mediterranean-style regimen helped people lose more weight than a traditional low-fat diet in one of the longest and largest studies to compare the dueling weight-loss techniques.
A bigger surprise: The low-carb diet improved cholesterol more than the other two. Some critics had predicted the opposite.
"It is a vindication," said Abby Bloch of the Dr. Robert C. and Veronica Atkins Foundation, a philanthropy group that honors the Atkins' diet's creator and was the study's main funder.
However, all three approaches — the low-carb diet, a low-fat diet and a so-called Mediterranean diet — achieved weight loss and improved cholesterol.
The study is remarkable not only because it lasted two years, much longer than most, but also because of the huge proportion of people who stuck with the diets — 85 percent.
Researchers approached the Atkins Foundation with the idea for the study. But the foundation played no role in the study's design or reporting of the results, said the lead author, Iris Shai of Ben-Gurion University of the Negev.
Other experts said the study — being published Thursday in the New England Journal of Medicine — was highly credible.
"This is a very good group of researchers," said Kelly Brownell, director of Yale University's Rudd Center for Food Policy and Obesity.
The research was done in a controlled environment — an isolated nuclear research facility in Israel. The 322 participants got their main meal of the day, lunch, at a central cafeteria.
"The workers can't easily just go out to lunch at a nearby Subway or McDonald's," said Dr. Meir Stampfer, the study's senior author and a professor of epidemiology and nutrition at the Harvard School of Public Health.
In the cafeteria, the appropriate foods for each diet were identified with colored dots, using red for low-fat, green for Mediterranean and blue for low-carb.
As for breakfast and dinner, the dieters were counseled on how to stick to their eating plans and were asked to fill out questionnaires on what they ate, Stampfer said.
The low-fat diet — no more than 30 percent of calories from fat — restricted calories and cholesterol and focused on low-fat grains, vegetables and fruits as options. The Mediterranean diet had similar calorie, fat and cholesterol restrictions, emphasizing poultry, fish, olive oil and nuts.
The low-carb diet set limits for carbohydrates, but none for calories or fat. It urged dieters to choose vegetarian sources of fat and protein.
"So not a lot of butter and eggs and cream," said Madelyn Fernstrom, a University of Pittsburgh Medical Center weight management expert who reviewed the study but was not involved in it.
Most of the participants were men; all men and women in the study got roughly equal amounts of exercise, the study's authors said.
Average weight loss for those in the low-carb group was 10.3 pounds after two years. Those in the Mediterranean diet lost 10 pounds, and those on the low-fat regimen dropped 6.5.
More surprising were the measures of cholesterol. Critics have long acknowledged that an Atkins-style diet could help people lose weight but feared that over the long term, it may drive up cholesterol because it allows more fat.
But the low-carb approach seemed to trigger the most improvement in several cholesterol measures, including the ratio of total cholesterol to HDL, the "good" cholesterol. For example, someone with total cholesterol of 200 and an HDL of 50 would have a ratio of 4 to 1. The optimum ratio is 3.5 to 1, according to the American Heart Association.
Doctors see that ratio as a sign of a patient's risk for hardening of the arteries. "You want that low," Stampfer said.
The ratio declined by 20 percent in people on the low-carb diet, compared to 16 percent in those on the Mediterranean and 12 percent in low-fat dieters.
The study is not the first to offer a favorable comparison of an Atkins-like diet. Research published in the Journal of the American Medical Association last year found overweight women on the Atkins plan had slightly better blood pressure and cholesterol readings than those on the low-carb Zone diet, the low-fat Ornish diet and a low-fat diet that followed U.S. government guidelines.
The heart association has long recommended low-fat diets to reduce heart risks, but some of its leaders have noted the Mediterranean diet has also proven safe and effective.
The heart association recommends a low-fat diet even more restrictive than the one in the study, said Dr. Robert Eckel, the association's past president who is a professor of medicine at the University of Colorado-Denver.
It does not recommend the Atkins diet. However, a low-carb approach is consistent with heart association guidelines so long as there are limitations on the kinds of saturated fats often consumed by people on the Atkins diet, Eckel said.
The new study's results favored the Atkins-like approach less when subgroups such as diabetics and women were examined.
Among the 36 diabetics, only those on the Mediterranean diet lowered blood sugar levels. Among the 45 women, those on the Mediterranean diet lost the most weight.
"I think these data suggest that men may be much more responsive to a diet in which there are clear limits on what foods can be consumed," such as an Atkins-like diet, said Dr. William Dietz, of the Centers for Disease Control and Prevention.
"It suggests that because women have had more experience dieting or losing weight, they're more capable of implementing a more complicated diet," said Dietz, who heads CDC's nutrition unit.
Occupation: My mission in life is to meet the road with the wind in my face & do the best I can do and be the best me that I can be.
I work in MRI R&D.
Bio: Im 48, have raised 5 kiddos, mine 28 & 26 & his 25, 23 & 21. 2 still hanging out in the nest. I have 1 adorable 1 year old grand-est-daughter & 3 other grand-est-daughters of the heart. (9,5 & almost 1 year)
Interests: These are the things I love:couponing, gardening, reading, photography, spirituality & mysticism, all aspects of biology, agriculture, crafts, nature, riding motorcycles, living, loving, and learning.
You Might Not Guess: Im more of an introvert than an extrovert.. though on a professional graph Im close to being right in the middle.. but still on the introvert side.
Others always see me as being an extrovert but they mistake caring, being friendly, & opinionated
Re: Good Low Carb Article on FoxNews!
Quote:
"It suggests that because women have had more experience dieting or losing weight, they're more capable of implementing a more complicated diet," said Dietz, who heads CDC's nutrition unit.
You know.. the whole article was GREAT in my opinion till I read this. This made me want to the originator. I think this about the stupidest statement, which is no more than an opinion, I've heard someone thats supposed to be halfway smart say... again!
Occupation: Mother, chef, author, secretary, purchasing agent, accountant, maid, and head dishwasher - you get the picture... I run my websites as well as my husband's electrical contracting office.
Bio: Married since '84 with two kids, one married daughter who gave me my two grand-angels, and a son who is still living with us after H.S. Originally from Farmington Maine, I moved to Colorado as soon as I possibly could.
Interests: Cooking, Downhill Skiing, Motorcycle riding - I ride an 1100 Honda Shadow and my husband rides a Harley Dyna Wide Glide that he WON on a 25-cent slot machine in Las Vegas in 1998... Yee-haw for Sin City!
You Might Not Guess: I started college at age 16 after skipping two grades along the way, but never went back after my first year. Instead I "took 1 year off" and moved to Vail to decide on a major. 27 years later it is obvious I majored only in the mountains.
Re: Good Low Carb Article on FoxNews!
Thanks for posting this, Lee! I saw the headlines this morning but am just now getting my new PC to a 'usable' state.
This article is certainly a vindication for all of us!
: dance:
The trouble with square meals is that they make you round.
Bio: Single mom of 3, did Atkins several years ago and lost over 30 lbs. Then came 3 surgeries in 1 year, divorce, and relocation back to my home state of Michigan. Fell off the wagon big time, now heavier than I've ever been in my life and hating it.
Interests: Fishing, camping, reading, cooking, yard work, flowers, gardening, selling online, time with my kids & family, pets.
You Might Not Guess: Grandma of one fantastic little redhead.
Re: Good Low Carb Article on FoxNews!
I heard this on the radio the other day, and it was one of the main reasons I decided to try low-carb again! I knew it was the only way of eating that worked for me, made me feel better and lose weight. Now I have proof that it works from some other source as well!
(I remember going to a Subway and ordering a low-carb wrap years ago when they were selling them....the pimple-faced kid behind the counter told me Dr. Atkins died because of his diet...I just about leaped across the counter and sat on him!)
By Mike Stobbe
July 17, 2008 12:00am THE Atkins diet may have proved itself after all: A low-carb diet and a Mediterranean-style regimen helped people lose more weight than a traditional low-fat diet in one of the longest and largest studies to compare the dueling weight-loss techniques.
A bigger surprise: The low-carb diet improved cholesterol more than the other two. Some critics had predicted the opposite.
"It is a vindication," said Abby Bloch of the Dr. Robert C. and Veronica Atkins Foundation, a philanthropy group that honors the Atkins' diet's creator and was the study's main funder.
However, all three approaches - the low-carb diet, a low-fat diet and a so-called Mediterranean diet - achieved weight loss and improved cholesterol.
The study is remarkable not only because it lasted two years, much longer than most, but also because of the huge proportion of people who stuck with the diets - 85 percent.
Researchers approached the Atkins Foundation with the idea for the study. But the foundation played no role in the study's design or reporting of the results, said the lead author, Iris Shai of Ben-Gurion University of the Negev.
Other experts said the study - being published Thursday in the New England Journal of Medicine - was highly credible.
"This is a very good group of researchers," said Kelly Brownell, director of Yale University's Rudd Center for Food Policy and Obesity.
The research was done in a controlled environment - an isolated nuclear research facility in Israel. The 322 participants got their main meal of the day, lunch, at a central cafeteria.
"The workers can't easily just go out to lunch at a nearby Subway or McDonald's," said Dr. Meir Stampfer, the study's senior author and a professor of epidemiology and nutrition at the Harvard School of Public Health.
In the cafeteria, the appropriate foods for each diet were identified with colored dots, using red for low-fat, green for Mediterranean and blue for low-carb.
As for breakfast and dinner, the dieters were counseled on how to stick to their eating plans and were asked to fill out questionnaires on what they ate, Stampfer said.
The low-fat diet - no more than 30 percent of calories from fat - restricted calories and cholesterol and focused on low-fat grains, vegetables and fruits as options. The Mediterranean diet had similar calorie, fat and cholesterol restrictions, emphasizing poultry, fish, olive oil and nuts.
The low-carb diet set limits for carbohydrates, but none for calories or fat. It urged dieters to choose vegetarian sources of fat and protein.
"So not a lot of butter and eggs and cream," said Madelyn Fernstrom, a University of Pittsburgh Medical Center weight management expert who reviewed the study but was not involved in it. Most of the participants were men; all men and women in the study got roughly equal amounts of exercise, the study's authors said. Average weight loss for those in the low-carb group was 10.3 pounds (4.67 kilograms) after two years. Those in the Mediterranean diet lost 10 pounds (4.54 kilograms), and those on the low-fat regimen dropped 6.5 pounds (2.95 kilograms).
More surprising were the measures of cholesterol. Critics have long acknowledged that an Atkins-style diet could help people lose weight but feared that over the long term, it may drive up cholesterol because it allows more fat.
But the low-carb approach seemed to trigger the most improvement in several cholesterol measures, including the ratio of total cholesterol to HDL, the "good" cholesterol. For example, someone with total cholesterol of 200 and an HDL of 50 would have a ratio of 4 to 1. The optimum ratio is 3.5 to 1, according to the American Heart Association.
Doctors see that ratio as a sign of a patient's risk for hardening of the arteries. "You want that low," Stampfer said. The ratio declined by 20 percent in people on the low-carb diet, compared to 16 percent in those on the Mediterranean and 12 percent in low-fat dieters.
The study is not the first to offer a favorable comparison of an Atkins-like diet. Research published in the Journal of the American Medical Association last year found overweight women on the Atkins plan had slightly better blood pressure and cholesterol readings than those on the low-carb Zone diet, the low-fat Ornish diet and a low-fat diet that followed U.S. government guidelines. The heart association has long recommended low-fat diets to reduce heart risks, but some of its leaders have noted the Mediterranean diet has also proven safe and effective. The heart association recommends a low-fat diet even more restrictive than the one in the study, said Dr. Robert Eckel, the association's past president who is a professor of medicine at the University of Colorado-Denver.
It does not recommend the Atkins diet. However, a low-carb approach is consistent with heart association guidelines so long as there are limitations on the kinds of saturated fats often consumed by people on the Atkins diet, Eckel said.
The new study's results favored the Atkins-like approach less when subgroups such as diabetics and women were examined. Among the 36 diabetics, only those on the Mediterranean diet lowered blood sugar levels. Among the 45 women, those on the Mediterranean diet lost the most weight. "I think these data suggest that men may be much more responsive to a diet in which there are clear limits on what foods can be consumed," such as an Atkins-like diet, said Dr. William Dietz, of the Centers for Disease Control and Prevention. "It suggests that because women have had more experience dieting or losing weight, they're more capable of implementing a more complicated diet," said Dietz, who heads CDC's nutrition unit.
Occupation: Mother, chef, author, secretary, purchasing agent, accountant, maid, and head dishwasher - you get the picture... I run my websites as well as my husband's electrical contracting office.
Bio: Married since '84 with two kids, one married daughter who gave me my two grand-angels, and a son who is still living with us after H.S. Originally from Farmington Maine, I moved to Colorado as soon as I possibly could.
Interests: Cooking, Downhill Skiing, Motorcycle riding - I ride an 1100 Honda Shadow and my husband rides a Harley Dyna Wide Glide that he WON on a 25-cent slot machine in Las Vegas in 1998... Yee-haw for Sin City!
You Might Not Guess: I started college at age 16 after skipping two grades along the way, but never went back after my first year. Instead I "took 1 year off" and moved to Vail to decide on a major. 27 years later it is obvious I majored only in the mountains.
Re: Low-carb rated best diet
and I posted a summary of this study, then.... which is why I haven't moved it to Featured Posts.... enjoyed seeing it again, though!
Occupation: Mother, chef, author, secretary, purchasing agent, accountant, maid, and head dishwasher - you get the picture... I run my websites as well as my husband's electrical contracting office.
Bio: Married since '84 with two kids, one married daughter who gave me my two grand-angels, and a son who is still living with us after H.S. Originally from Farmington Maine, I moved to Colorado as soon as I possibly could.
Interests: Cooking, Downhill Skiing, Motorcycle riding - I ride an 1100 Honda Shadow and my husband rides a Harley Dyna Wide Glide that he WON on a 25-cent slot machine in Las Vegas in 1998... Yee-haw for Sin City!
You Might Not Guess: I started college at age 16 after skipping two grades along the way, but never went back after my first year. Instead I "took 1 year off" and moved to Vail to decide on a major. 27 years later it is obvious I majored only in the mountains.
Re: Low-carb rated best diet
I lied... Lee posted it... different version, though, so I am going to merge the two threads now...