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  #1   ^
Old Today, 02:44
JEY100's Avatar
JEY100 JEY100 is offline
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Default Is There an Ideal Diet? Some Insights from the POUNDS Lost Study

Is There an Ideal Diet? Some Insights from the POUNDS Lost Study
Fascinating new study from the Pennington Biomedical research center comparing diets. TL: DR "The answer to the question of whether there is “an ideal diet” is clearly no."

https://www.mdpi.com/2072-6643/16/14/2358 [Many interesting tables of composition of diets.]

Quote:
Diets for weight loss have a long history but an ideal one has not yet been clearly identified. To compare low-fat and lower carbohydrate diets, we designed The Preventing Overweight by Novel Dietary Strategies (POUNDS) Lost study. This is a 2 × 2 factorial study with diets of 20% or 40% fat and 15% or 25% protein with a graded carbohydrate intake of 35, 45, 55 and 65%. Weight loss, overall, was modest at nearly 6% with all four diets, and no significant dietary difference. The variability in weight loss in each diet group was significant, ranging from greater than 20% to a small weight gain. Studies of genetic variations in relation to weight loss showed that the diet that was selected could significantly affect weight loss, emphasizing that there is no ideal diet and more than one diet can be used to treat obesity. Weight loss was also influenced by the level of baseline triiodothyronine or thyroxine, and baseline carbohydrate and insulin resistance. Achieving a stable Health Eating Food Diversity Index, eating more protein, eating more fiber, engaging in more physical activity, sleeping better and eating less ultra-processed foods were beneficial strategies for weight loss in this trial. Although there is no “ideal diet”, both the DASH diet and the Mediterranean diet have clinical trials showing their significant benefit for cardiovascular risk factors. Finally, the lesson of the “Last Chance Diet”, which recommended a diet with protein from gelatin, proved that some diets could be hazardous.
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  #2   ^
Old Today, 03:47
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Dodger Dodger is offline
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As the least carbohydrate intake considered was 35%, I would say that they did not look at any low-carb diets.
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  #3   ^
Old Today, 05:18
JEY100's Avatar
JEY100 JEY100 is offline
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The Washington Post article by Anahad O’Connor on 6 Weight Loss "secrets" from this study

https://wapo.st/3XNy1rj (Gifted link, should be able to open, but copied below)

These 6 habits helped successful dieters lose weight and keep it off

Quote:
Consuming more protein and fiber and embracing variety are among the behavioral and lifestyle changes linked to successfully losing weight.

Want to know the best nutrition and lifestyle changes you can make to lose weight and boost your health? A group of top obesity researchers has identified the six key behaviors that make a difference.
Although many people are losing weight with new GLP-1 drugs, long-term success still requires lifestyle changes and healthy eating habits. An analysis of the largest and longest clinical trial on diet and weight loss — called the POUNDS Lost trial — found there was widespread variation in how much weight people lost or gained while eating different levels of fat, protein and carbohydrates.


The 811 people who took part in the trial were split into four groups. One was assigned a diet that was low in fat and protein. Another followed a diet that was high in fat and protein. The third group adhered to a diet that was high in fat but low in protein, and the fourth group ate a diet that was low in fat but high in protein. The four groups were assigned to consume varying amounts of carbs, ranging from 35 percent of the calories in their diet all the way up to a diet that was 65 percent carbohydrates. All four diets were low in calories and saturated fat.

The research was conducted by Pennington Biomedical Research Center, the Harvard T.H. Chan School of Public Health, and Brigham and Women’s Hospital in Boston.


At the end of the two-year trial, the researchers found that the members of each diet group lost a similar amount of weight, averaging about 6.6 to eight pounds.
But the researchers found that the overweight and obese adults who lost the most weight during the study had several things in common.


​

They ate more protein.
People who significantly increased the amount of protein they ate lost much more weight than people who did not. By the end of the trial, the high-protein consumers had lost an average of 16.5 pounds – triple the amount that people in the lowest protein group lost.
The reasons? Eating more protein is thermogenic. Our bodies spend a lot of calories digesting and absorbing protein compared with fat and carbs. Protein also increases satiety. When you increase your protein intake, you end up consuming less food, said George A. Bray, a co-author of the study and emeritus director of the Pennington Biomedical Research Center in Louisiana.
​

They consumed more fiber.
People who increased their fiber intake the most during the first six months of the study lost roughly 23 pounds – nearly double the amount of weight loss seen in people who added the least amount of fiber to their diets.
Fiber causes food to travel more slowly from your stomach to your intestines, which helps you feel full. It also stimulates the release of appetite-suppressing hormones like GLP-1, the hormone that’s mimicked by Ozempic and Wegovy, the popular diabetes and weight-loss drugs.
​

They cut back on ultra-processed foods.
People who consumed the fewest ultra-processed foods lost an average of 18.2 pounds during the study, while those who ate the most ultra-processed foods lost about 11.6 pounds. Previous research has shown that people tend to eat significantly more calories when they’re fed a diet of ultra-processed foods — like cookies, sugary breakfast cereals and soft drinks.
Ultra-processed foods contain additives that can cause people to overeat, and they are less nutritious than fruits and vegetables, grains, beans and other whole foods.
​They embraced variety.


The researchers found that people who ate a wider range of nutritious foods lost significantly more weight and had larger reductions in their waistlines and body fat. These participants increased their intake of foods like whole grains, berries, melons and citrus fruits, as well as low-fat milk, yogurt, and dark-green and orange vegetables. The researchers speculated that people who ate a greater variety of healthful foods were better able to stick with their diets because they experienced more enjoyment and fewer feelings of deprivation.
​

They walked and exercised more.
Every person in the study was given a pedometer and encouraged to exercise. The researchers found that the more people increased their daily step counts, the more weight and body fat they lost. People who had the largest increases in physical activity maintained their weight loss throughout the two-year trial, while those who had the smallest increases in physical activity ended up regaining lost weight.
​

They got better sleep.
People who struggled with insomnia and other sleep problems had triple the likelihood of failing to lose weight. Previous research has shown that when we lose sleep, it can trigger brain and hormonal changes that drive us to crave and overeat junk foods rich in fat and sugar.
The findings from the POUNDS Lost trial demonstrate that these behavioral changes can have powerful effects on your health by sharply reducing your weight, shrinking your waistline and lowering your body fat levels.
The researchers were encouraged when they found that the people who were most successful at losing weight and keeping it off had behaviors in common.

Bray said that the relatively straightforward nutrition and lifestyle changes they identified can be implemented by just about anyone and applied to a variety of diets.
“One of the important points of this paper is that any diet can work for you if you follow it," he said. “There are a few big things that can help make a difference, like eating more protein and fiber and avoiding ultra-processed foods.”


My journal has the macro % for the original Banting Diet…it was only moderately Low Carb. More quite Low Fat (22%), High Protein 27%. With a goodly amount for alcohol for energy

Last edited by JEY100 : Today at 07:36.
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  #4   ^
Old Today, 10:36
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The macros analysis of the Banting diet are outlined in Table 1 of the study paper ..
Quote:
Table 1. Mr Banting’s diet

Components of Intake ... Average ... % as Calories

Energy Intake 1714 kcal/d
Protein intake ... 115 g/d ... 27%
Fat Intake ... 42 g/d ... 22%
Carbohydrate Intake ... 119 g/d ... 28%
Alcohol ... 56 g/d ... 23%

Data analysis performed by Dr. Catherine M. Champaign, PhD. With this diet, he ate 319 kcal at breakfast, 835 kcal at dinner, 240 kcal at tea time and 320 kal at supper. Breakfast: 150–180 g (5–6 oz) of meat or broiled fish (not a fat variety of either); a small biscuit or 30 g (1 oz) of dry toast; a large cup of tea or coffee without cream, milk or sugar. Dinner at 1 PM: Meat or fish as at breakfast, or any kind of game or poultry, same amount; any vegetable except those that grow underground, such as potatoes, parsnips, carrots, or beets; dry toast, 30 g (1 oz); cooked fruit without sugar; good claret, 300 cc (10 oz), Madiera or sherry. Tea at 5 PM: Cooked fruit, 60 to 90 g (2–3 oz); one or two pieces of zwieback; tea, 270 cc (9 oz), without milk, cream or sugar. Supper at 8 PM: Meat or fish, as at dinner, 90–120 cc (3–4 oz); claret or sherry, water, 210 cc (7 oz). Fluids: restricted to 1050 cc (35 oz) per day


This is NOT Mr. Banting's original diet as prescribed to him by Dr. William Harvey. This is a later, bastardized version of the Banting Diet, crafted by a Dr. Felix Niemeyer of Stuttgart, Germany to make it more acceptable to the medical establishment of the day, who refused to accept that a diet high in fat could possibly be healthy and dismissed Banting's (and Harvey's) work as "unscientific".


William Banting's "Letter on Corpulence to the Public, 4th edition" can be read in full on our host site, lowcarb.ca .. here. This edition is prefaced by a letter from the author, describing the attacks and criticisms on himself and Dr. Harvey by the British (medical) Association, among others.
Banting's own daily fare included bacon, mutton, beef ... poultry, game .. any fish. Pork, veal, salmon, eels, milk and butter were avoided, not because of fat content but because at the time, these foods were believed to be "farinaceous", ie starchy. In the preface letter, Banting describes his meats, viands and savoury pies accompanied by gravies and jellies (meat aspic) as concocted by his cook.

While not "Atkins Induction" 20g carbs/d lowcarb, Banting's weight loss regimen was certainly much lower in carbs than his previous diet of bread, potatoes and beer.

~~~~~~~~~~~~~~~

Dr. Barry Groves wrote a scholarly analysis of the Banting Diet, for which he was awarded the prestigious Sophie Coe prize by Oxford University in 2002.
Quote:
When Banting's booklet, in which he described the diet and its amazing results was published, it was so contrary to the established doctrine that it set up a howl of protest among members of the medical profession. The 'Banting Diet' became the centre of a bitter controversy and Banting's papers and book were ridiculed and distorted. No one could deny that the diet worked, but as a layman had published it, and medical men were anxious that their position in society should not be undermined, they felt bound to attack it. Banting's paper was criticised solely on the grounds that it was 'unscientific'.

Later, Dr. Harvey had a problem too. He had an effective treatment for obesity but not a convincing theory to explain it. As he was a medical man, and so easier for the other members of his profession to attack, he came in for a great deal of ridicule until, in the end, his practice began to suffer.

However, the public was impressed. Many desperate, overweight people tried the diet and found that it worked. Like it or not, the medical profession could not ignore it. Its obvious success meant that the Banting Diet had to be explained somehow.

To the rescue from Stuttgart came a Dr. Felix Niemeyer. He managed to make the new diet acceptable with a total shift in its philosophy. At that time, the theory was that carbohydrates and fat burned together in the lungs to produce heat. The two were called 'respiratory foods'. After examining Banting's paper, Niemeyer came up with an answer to the doctors' problem. All doctors knew that protein was not fattening, only the respiratory foods — fats and carbohydrates. He, therefore, interpreted 'meat' to mean only lean meat with the fat trimmed off and this subtle change solved the problem. The Banting Diet became a high protein diet with both carbohydrate and fat restricted. This altered diet became enshrined in history and still forms the basis of slimming diets today.

Banting's descriptions of the diet are quite clear, however. Other than the prohibition against butter and pork, nowhere is there any instruction to remove the fat from meat and there is no restriction on the way food was cooked or on the total quantity of food which may be taken. Only carbohydrate — sugars and starches — are restricted. The reason that butter and pork were denied him was that it was thought at this time that they too contained starch.
The full essay can be read here .. http://www.second-opinions.co.uk/banting.html.
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