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Main Category: Breast Cancer
Also Included In: Nutrition / Diet; Diabetes
Article Date: 10 Dec 2011 - 10:00 PST
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4.4 (5 votes)Article Opinions: 2 postsWomen who go on a low carb diet just two days per week have a lower risk of developing breast cancer compared to those who follow a standard calorie-restricted diet every day of the week, in order to lose weight and lower their insulin blood levels. Long-term high blood insulin levels are known to raise cancer risk. These findings were presented by scientists from Genesis Prevention Center at University Hospital in South Manchester, England, at the 2011 CTRC-AACR San Antonio Breast Cancer Symposium.
The researchers stressed that a larger, longer-term additional study is required.
Michelle Harvie, Ph.D., SRD, a research dietician at the Genesis Prevention Center, who presented the study said:
"Weight loss and reduced insulin levels are required for breast cancer prevention, but [these levels] are difficult to achieve and maintain with conventional dietary approaches."
Harvie and her team set out to compare three different 4-month-long diets to assess the effects on weight loss and blood markers of breast cancer risk in 115 women who had a family history of breast cancer. The researchers randomly assigned patients into three groups:The low cal/carb group - they followed a calorie-restricted, low-carbohydrate dietThe part-time low-carb group - they followed an "ad lib" low-carbohydrate diet whereby patients were allowed to consume unlimited proteins and healthy fats, like lean meats, olives and nuts for 2 days per weekThe Mediterranean diet group - a standard, calorie-restricted daily Mediterranean diet for seven days per weekBoth low-carb diets were found to be more effective than the Mediterranean diet in achieving weight loss, reducing body fat, and lowering insulin resistance.Weight loss - in the two low-carb groups the participants lost an average of 4kg (approx. 9 pounds) compared to 2.4kg (approx 5 pounds) in the Mediterranean diet group.Insulin resistance - this went down 22% in the low cal/carb group, 14% in the part-time low-carb group, and 4% in the Mediterranean diet group.Harvie said:
"It is interesting that the diet that only restricts carbohydrates but allows protein and fats is as effective as the calorie-restricted, low-carbohydrate diet."
Harvie and her team are planning on studying carbohydrate intake and breast cancer.
Written by Petra Rattue
Copyright: Medical News Today
Not to be reproduced without permission of Medical News Today
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Visitor Opinions In Chronological Order (2)"Calorie Restricted" low carb diet? What?posted by Bob Bramel on 10 Dec 2011 at 3:56 pm
I think it is well past time for diet researchers to adopt some standards for defining a diet. "Calorie restricted low carb" is as ambiguous as "Mediterranean". Since fuel only comes in three forms, carbs, protein and fat, how about specifying "XX calories, YY gram carb, ZZ gram fat, and AA protein". I know it isn't as glamorous as (trumpet fanfare, please) "Mediterranean" or "South Park", but come on, let's at least try to be a little scientific.
As for the selected diet protocols, where is the diet so many of us use. Every day eat as little (for precision, less than XX grams) of carbs as possible and don't worry about calories or fat.
It doesn't pass the sniff test (i.e., it doesn't make any sense) that a two-day per week eating protocol works better than a seven day per week protocol. I'm guessing that the first, calorie restricted, low carb diet was more calorie restriction and only somewhat carb restricted. Folks, cutting carbs from 90% to 50% doesn't help a lot. Carbs gotta go! (40 pounds lost in 18 months over six years ago and keeping it off takes no effort at all, just stay away from carbs)
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Alright alreadyposted by Susan on 10 Dec 2011 at 6:03 pm
Blah, blah, blah. Every day a new study on what does or does not cause/prevent/treat/cure breast cancer. Obviously, to many breast-cancer grants being given out and too many budding PhD candidates in the field. Eventually, if you tried to follow every theory that's been thrown out there, you'd end up bumping into yourself running over yourself or chasing you own tail.
Give a gal a break, please.
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