Category Archives: Carbohydrate

Dr David Unwin Explains Why He Favors Low-Carb Eating as Best Diet for Type 2 Diabetes

 

diabetic diet, Paleobetic diet, diabetes,

Sunny’s Super Salad

The Diet Doctor website posted a video interview of Dr David Unwin (in the U.K.) discussing his experience with low-carb diets in folks with diabetes (type 2, I assume). If  you’re short on time, just read the transcript. Thanks, Diet Doctor!

I took note of Dr Unwin’s transformation from a run-of-the mill follow-the-herd practitioner to a low-carb advocate. This happened around 2012 when Dr Unwin was 55 years old and on the threshold of retirement. Here it is:

Dr David Unwin speaking: ….There was one particular case I’ve talked about before where there was a patient who – so in 25 years I’d never seen a single person put their [type 2] diabetes into remission, I had not seen it once. I didn’t even really know it was possible.

Dr Bret Scher speaking:  We were not [taught] that it’s possible.

Dr Unwin:  No, my model was that the people with diabetes… It was a chronic deteriorating condition and I could expect that they would deteriorate and I would add drugs and that’s what would be normally going to happen. And then one particular patient wasn’t taking her drugs and she actually went on the low-carb diet and put her diabetes into remission.

But she confronted me with, you know, “Dr. Unwin, surely you know that actually sugar is not a good thing for diabetes.” “Yes, I do.” But then she said, “But you’ve never once in all the years mentioned that really bread was sugar, did you.” And, you know, I never did. I don’t know what my excuse was. So this this lady had done this wonderful thing and she’d also changed her husband’s life as well.

She’d sorted his diabetes out and she’d done it with a low-carb diet and that really made me think I didn’t know much about it. I didn’t know much about it. So I found out what she’d been on… on the low-carb forum of diabetes.co.uk and to my amazement there was 40,000 people on there, all doing this amazing thing. And I was blown away but then I was very sad because the stories of the people online were full of doctors who are critical of these people’s achievements.

***

Dr Unwin: And that original case that showed me you could put into remission; if you could repeat that, how wonderful for people… And when I now – because I think we’ve done 60 patients who put their type 2 diabetes into remission. So I’m able to say with confidence to people, you know, you stand a good chance. In fact I can say that of my patients who take up low-carb, about 45% of them will put their diabetes into remission which is amazing.

At no point does the transcript indicate they’re talking about type 2 diabetes rather than type 1, but that must be the case. Nor does it mention the amount of required carbohydrate restriction. I figure it’s between 20 and 100 grams/day of digestible carbohydrate, depending on one’s metabolic health and how many years of diabetes.

I’ve mentioned Dr Unwin before.

Source: Diet Doctor Podcast #33 – Dr. David Unwin – Diet Doctor

Steve Parker, M.D.

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Can Diet Alter Your Gut Bacteria and Thereby Lower Your Risk of Dementia?

The short answer? We don’t know.

Low-carb salad

The gut bacteria (aka microbiome) seem to be able to decrease or increase inflammation that could cause or exacerbate Alzheimer’s dementia. The  microbiome’s effect on inflammation depends on the species of bacteria present, and the amount of those bacteria. At least one study found that Alzheimer’s patients have a greater abundance of the pro-inflammatory species and less of the anti-inflammatory species, compared to other folks.

Researchers with Wake Forest School of Medicine tried to find answers to the questions in the title of this post. (Click for full text.) They studied 17 experimental subjects, average age 64, who had mild cognitive impairment (11) or “cogni/subjective memory complaints” (6). God bless them for submitting to three spinal taps apiece. The experimental diets were 1) Mediterranean-Ketogenic (under 20 g carb/day), or 2) Low-fat American Heart Association diet (under 40 g fat/day). Participants were on each diet for six weeks.

The investigators didn’t find anything useful for those of us trying today to avoid Alzheimer’s or prevent the progression of mild cognitive impairment to dementia. Their bottom line is, “The data suggest that specific gut microbial signatures may depict [characterize] the mild cognitive impairment and that the modified Mediterranean-ketogenic diet can modulate the gut microbiome and metabolites in association with improved Alzheimer’s disease biomarkers in cerebrospinal fluid.”

So we won’t know for several more years, if ever, whether intentional modification of diet will “improve” our gut microbiomes, leading to lower risk of dementia.

What we have known for many year, however, is that the traditional Mediterranean diet is linked to lower risk of Alzhiemer’s dementia.

For more details, see Science Daily:

In a small pilot study, the researchers identified several distinct gut microbiome signatures — the chemicals produced by bacteria — in study participants with mild cognitive impairment (MCI) but not in their counterparts with normal cognition, and found that these bacterial signatures correlated with higher levels of markers of Alzheimer’s disease in the cerebrospinal fluid of the participants with MCI.

Through cross-group dietary intervention, the study also showed that a modified Mediterranean-ketogenic diet produced changes in the gut microbiome and its metabolites that correlated with reduced levels of Alzheimer’s markers in the members of both study groups.

Source: Diet’s effect on gut bacteria could play role in reducing Alzheimer’s risk — ScienceDaily

Steve Parker, M.D.

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If you own this book, you already have a ketogenic Mediterranean diet.

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ADA Is Starting to Embrace Low-Carb Eating

 

Beautiful, huh? Radishes are a non-starchy vegetable.

From Diabetes Care

Consensus recommendations:

A variety of eating patterns (combinations of different foods or food groups) are acceptable for the management of diabetes.

Until the evidence surrounding comparative benefits of different eating patterns in specific individuals strengthens, health care providers should focus on the key factors that are common among the patterns:

○ Emphasize nonstarchy vegetables.

○ Minimize added sugars and refined grains.

○ Choose whole foods over highly processed foods to the extent possible.

Reducing overall carbohydrate intake for individuals with diabetes has demonstrated the most evidence for improving glycemia and may be applied in a variety of eating patterns that meet individual needs and preferences.

For select adults with type 2 diabetes not meeting glycemic targets or where reducing antiglycemic medications is a priority, reducing overall carbohydrate intake with low- or very low-carbohydrate eating plans is a viable approach.

Source: Nutrition Therapy for Adults With Diabetes or Prediabetes: A Consensus Report | Diabetes Care

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Do Diabetics Need as Many Carbs as Other Folks?

From Diabetes Care:

Do carbohydrate needs differ for people with diabetes compared with the general population?

Carbohydrate is a readily used source of energy and the primary dietary influence on postprandial blood glucose. Foods containing carbohydrate—with various proportions of sugars, starches, and fiber—have a wide range of effects on the glycemic response. Some result in an extended rise and slow fall of blood glucose concentrations, while others result in a rapid rise followed by a rapid fall. The quality of carbohydrate foods selected—ideally rich in dietary fiber, vitamins, and minerals and low in added sugars, fats, and sodium— should be addressed as part of an individualized eating plan that includes all components necessary for optimal nutrition.The amount of carbohydrate intake required for optimal health in humans is unknown. Although the recommended dietary allowance for carbohydrate for adults without diabetes (19 years and older) is 130 g/day and is determined in part by the brain’s requirement for glucose, this energy requirement can be fulfilled by the body’s metabolic processes, which include glycogenolysis, gluconeogenesis (via metabolism of the glycerol component of fat or gluconeogenic amino acids in protein), and/or ketogenesis in the setting of very low dietary carbohydrate intake.

Source: Nutrition Therapy for Adults With Diabetes or Prediabetes: A Consensus Report | Diabetes Care

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What’s the Optimal Diet for Type 1 Diabetes?

A mess of Bacon Bit Brussels Sprouts: 6 grams of fiber per serve

Dr. Muccioli over at Diabetes Daily posted a brief article on a recent research study. A snippet:

The authors found that a higher intake of fiber was associated with lower average blood glucose values. In contrast, a higher intake of carbohydrate, alcohol, and monounsaturated fat was negatively associated with glycemic control (these patients typically experienced more variability in their blood glucose levels). Finally, the analysis revealed that “substituting proteins for either carbohydrates, fats, or alcohol, or fats for carbohydrates, were all associated with lower variability in the measured blood glucose values.”

Source: Which Dietary Patterns Are Best for Type 1 Diabetes Control? – Diabetes Daily

Eaton and Konner figured the Paleolithic diet provided over 70 g/day of fiber. How much are we in the West eating now? Something like 15–20 grams.

Steve Parker, M.D.

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Very Low Carbohydrate Diets for Diabetes (ADA 2018)

This Avocado Chicken soup is low-carb. Use the search box to find the recipe.

Over at Diabete Daily, Dr Maria Muccioli wrote about recent low-carb diet research as applied to diabetes. A couple excerpts to whet your appetite:

Dr. Tay stated that a very low carbohydrate diet offers a considerable advantage over a high carbohydrate approach for patients with type 2 diabetes.She noted that reducing medication use is not only cost-effective but can also safeguard from the considerable side effects of some second-line medications. She also explained that achieving less glycemic variability, which may be an independent risk factor for the development of diabetes-associated complications, is “of great clinical importance.”“It is a good diet to have if you have diabetes, and the data support that,” she concluded.

  *   *   *

What about VLC diet for children with type 1 diabetes?

Dr. de Bock does not deny that a VLCD for children with type 1 diabetes can help to achieve exceptional glycemic control, as recently demonstrated in a study showing normal average A1c levels in a large cohort of patients. The speaker remarked that the patients in that study had very low glycemic variability.

He believes that more research needs to be conducted to evaluate the relevance of the potential concerns that he outlined. Until then, he advises parents of children who follow a VLCD to work closely with their medical care providers to monitor growth, cardiac, nutritional, and mental/emotional parameters.

Source: Very Low Carbohydrate Diets for Diabetes (ADA 2018)

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Dr Maria Muccioli: The Low-Carb Diabetes Revolution (Part I) – Type 1 Diabetes 

Published at Diabetes Daily:

Not long ago, low-carbohydrate diets were considered to be on the fringes of medically-recommended strategies for diabetes control. Long regarded as a “fad diet” and with the health effects often called into question, many patients were routinely discouraged from attempting such an approach. However, in recent years, as more and more research demonstrated the potential benefits of a low-carbohydrate approach for people with diabetes and prediabetes, we have seen a rapid change in the nutritional guidelines and the professional recommendations for patients.

At the 79th American Diabetes Association (ADA) Scientific Sessions, we saw a symposium addressing the changes in the nutrition consensus report for adults with diabetes. Notably, a one-size-fits-all approach is no longer recommended, with experts suggesting now that various eating strategies and macronutrient distributions can work well for patients from a nutritional and glycemic control perspective. Moreover, low-carbohydrate diets were explicitly addressed as a relevant and effective strategy, that is “garnering more attention and support”, as per Dr. William S. Yancy, MD, MHS, who chaired the symposium titled “Providing Options – Using a Low-Carbohydrate or Very Low-Carbohydrate Diet with Adults with Type 1 Diabetes, Type 2 Diabetes or Prediabetes”. In this series, we explore the research and surrounding conversations regarding low-carbohydrate approaches for these distinct patient subgroups.

RTWT!

Source: The Low-Carb Diabetes Revolution (Part I): Type 1 Diabetes (ADA 2019) – Diabetes Daily

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