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Churuangsuk C, Catchpole A, Talwar D, Welsh P, Sattar N, Lean MEJ, Combet E. Low thiamine status in adults following low-carbohydrate / ketogenic diets: a cross-sectional comparative study of micronutrient intake and status. Eur J Nutr 2024:10.1007/s00394-024-03459-y. [PMID: 38967675 DOI: 10.1007/s00394-024-03459-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 06/22/2024] [Indexed: 07/06/2024]
Abstract
BACKGROUND Low-carbohydrate diets (LCD) are popular for weight loss but lack evidence about micronutrient sufficiency in real-life use. This study assessed the intake and biochemical status of selected micronutrients in people voluntarily following LCDs. METHODS A cross-sectional study was conducted (2018-20) among 98 adults recruited as self-reporting either LCD (n = 49) or diets not restricting carbohydrates (controls; n = 49). Diets were assessed using the 130-item EPIC-Norfolk food-frequency questionnaire. Red-blood-cell thiamine diphosphate (TDP) was measured for thiamine status using HPLC. Plasma magnesium, zinc, copper, and selenium were measured using inductively coupled plasma mass spectrometry. Between-group biomarker comparisons were conducted using ANCOVA and adjusted for age, sex, body mass index (BMI), and diabetes status. RESULTS LCD-followers (26% male, median age 36 years, median BMI 24.2 kg/m2) reported adhering to LCDs for a median duration of 9 months (IQR 4-36). The most followed LCD type was 'their own variations of LCD' (30%), followed by ketogenic (23%), 'palaeolithic' (15%), and Atkins diets (8%). Among controls, 41% were male (median age 27 years, median BMI 23 kg/m2). Median macronutrient intakes for LCD vs control groups were carbohydrate 16%Energy (E) vs. 50%E; protein 25%E vs. 19%E; and fat 55%E vs 34%E (saturated fat 18%E vs. 11%E). Two-thirds of LCD followers (32/49) and half of the controls (24/49) reported some use of dietary supplements (p = 0.19). Among LCD-followers, assessing from food data only, 21 (43%) failed to meet the reference nutrient intake (RNI) for thiamine (vs.14% controls, p = 0.002). When thiamine from supplementation (single- or multivitamin) was included, there appeared to be no difference in thiamine intake between groups. Still, red-blood-cell TDP was lower in LCD-followers than controls (407 ± 91 vs. 633 ± 234 ng/gHb, p < 0.001). Three LCD-followers were thiamine-deficient (RBC thiamine < 275 ng/gHb) vs. one control. There were no significant differences in dietary intakes or plasma concentrations of magnesium, zinc, copper, and selenium between groups. CONCLUSIONS Following LCDs is associated with lower thiamine intake and TDP status than diets without carbohydrate restriction, incompletely corrected by supplement use. These data, coupled with a lack of RCT evidence on body weight control, do not support recommending LCDs for weight management without appropriate guidance and diet supplementation.
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Affiliation(s)
- Chaitong Churuangsuk
- Human Nutrition, School of Medicine, Dentistry, and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Room 2.22, Level 2, New Lister Building 10-16 Alexandra Parade, Glasgow, G31 2ER, UK
- Department of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Anthony Catchpole
- Scottish Trace Element and Micronutrient Diagnostic and Research Laboratory, Glasgow Royal Infirmary, Glasgow, UK
| | - Dinesh Talwar
- Scottish Trace Element and Micronutrient Diagnostic and Research Laboratory, Glasgow Royal Infirmary, Glasgow, UK
| | - Paul Welsh
- School of Cardiovascular and Metabolic Health, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
| | - Naveed Sattar
- School of Cardiovascular and Metabolic Health, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
| | - Michael E J Lean
- Human Nutrition, School of Medicine, Dentistry, and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Room 2.22, Level 2, New Lister Building 10-16 Alexandra Parade, Glasgow, G31 2ER, UK
| | - Emilie Combet
- Human Nutrition, School of Medicine, Dentistry, and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Royal Infirmary, Room 2.22, Level 2, New Lister Building 10-16 Alexandra Parade, Glasgow, G31 2ER, UK.
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2
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Lewandowski S, Neale E, D'Arcy E, Hodge AM, Schoenaker DAJM. Quality of low-carbohydrate diets among Australian post-partum women: Cross-sectional analysis of a national population-based cohort study. MATERNAL & CHILD NUTRITION 2023:e13502. [PMID: 36938942 DOI: 10.1111/mcn.13502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 02/17/2023] [Accepted: 03/01/2023] [Indexed: 03/21/2023]
Abstract
Low-carbohydrate diets (LCDs) are popular among people attempting weight loss and recommended for pregnant women with gestational diabetes (GDM), but they may increase health risks if nutritionally inadequate. We aimed to describe the dietary intake of post-partum women according to their relative carbohydrate intake, overall, and among women attempting weight loss or diagnosed with GDM in their recent pregnancy. This cross-sectional population-based cohort study included 2093 post-partum women aged 25-36 years who participated in the Australian Longitudinal Study on Women's Health. Dietary intake was assessed using a validated food frequency questionnaire. Relative carbohydrate intake was determined using a previously developed LCD score. Data were weighted to account for oversampling of women from rural/remote areas. More than half of women (n[weighted] = 1362, 66.3%) were trying to lose weight, and 4.6% (n[weighted]=88) had GDM in their recent pregnancy. Women with the lowest relative carbohydrate intake (LCD score quartile 4) consumed 36.8% of total energy intake from carbohydrates, and had a lower intake of refined grains, whole grains, fruit and fruit juice, and a higher intake of red and processed meat, compared with women with the highest relative carbohydrate intake (quartile 1). Different food groups, both healthy and unhealthy, were restricted depending on whether women were attempting weight loss and had recent GDM. These findings may reflect a lack of knowledge among post-partum women on carbohydrates and dietary guidelines. Health professionals may have an important role in providing advice and support for post-partum women who wish to restrict their carbohydrate intake, to ensure optimal diet quality.
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Affiliation(s)
- Sophie Lewandowski
- School of Medical, Indigenous and Health Sciences, University of Wollongong, Wollongong, New South Wales, Australia
| | - Elizabeth Neale
- School of Medical, Indigenous and Health Sciences, University of Wollongong, Wollongong, New South Wales, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales, Australia
| | - Ellie D'Arcy
- Integrated Care, Western New South Wales Local Health District, New South Wales, Dubbo, Australia
| | - Allison M Hodge
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Victoria, Australia.,Melbourne School of Population and Global Health, University of Melbourne, Parkville, Victoria, Australia
| | - Danielle A J M Schoenaker
- School of Medical, Indigenous and Health Sciences, University of Wollongong, Wollongong, New South Wales, Australia.,School of Primary Care, Population Sciences and Medical Education, University of Southampton, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
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3
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Cara KC, Goldman DM, Kollman BK, Amato SS, Tull MD, Karlsen MC. Commonalities among dietary recommendations from 2010-2021 clinical practice guidelines: A meta-epidemiological study from the American College of Lifestyle Medicine. Adv Nutr 2023; 14:500-515. [PMID: 36940903 DOI: 10.1016/j.advnut.2023.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/17/2023] [Accepted: 03/14/2023] [Indexed: 03/22/2023] Open
Abstract
Clinical practice guidelines (CPGs) provide recommendations to clinicians based on current medical knowledge to guide and reduce variability in clinical care. With advances in nutrition science research, CPGs increasingly include dietary guidance; however, the degree of consistency in dietary recommendations across CPGs has not been investigated. Using a systematic review approach adapted for meta-epidemiological research, this study compared dietary guidance from current guidelines developed by governments, major medical professional societies, and large health stakeholder associations due to their often well-defined and standardized processes for guideline development. CPGs making recommendations for dietary patterns and food groups or components for generally healthy adults or those with pre-specified chronic diseases were eligible. Literature from January 2010-2022 was searched in five bibliographic databases and augmented by searches in point-of-care resource databases and relevant websites. Reporting followed an adapted Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) statement and included narrative synthesis and summary tables. The protocol was pre-published on PROSPERO (CRD42021226281). Seventy-eight CPGs for major chronic conditions (autoimmune=7, cancers=5, cardiovascular-related=35, digestive=11, diabetes=12, weight-related=4, or multiple=3) and general health promotion (n=1) were included. Nearly all (91%) made dietary pattern recommendations, and roughly half (49%) endorsed patterns centered around plant foods. Overall, CPGs were most closely aligned in promoting consumption of major plant food groups (vegetables=74% of CPGs, fruit=69%, whole grains=58%) while discouraging intake of alcohol (62%) and salt or sodium (56%). CVD and diabetes CPGs were similarly aligned with additional messaging to consume legumes/pulses (60% of CVD CPGs; 75%, diabetes), nuts and seeds (67%, CVD), and low-fat dairy (60%, CVD). Diabetes guidelines discouraged sweets/added sugars (67%) and sweetened beverages (58%). This alignment across CPGs should boost clinician confidence in relaying such dietary guidance to patients in accordance with their relevant CPGs.
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Affiliation(s)
- Kelly C Cara
- American College of Lifestyle Medicine, Chesterfield, MO 63006, USA; Tufts University, Friedman School of Nutrition Science and Policy, Division of Nutrition Epidemiology and Data Science, Boston, MA, USA
| | | | - Brooke K Kollman
- The Integrative Medicine Center of Western Colorado, Grand Junction, CO, USA
| | - Stas S Amato
- University of Vermont Medical Center, Department of General Surgery, Burlington, VT, USA
| | - Martin D Tull
- American College of Lifestyle Medicine, Chesterfield, MO 63006, USA
| | - Micaela C Karlsen
- American College of Lifestyle Medicine, Chesterfield, MO 63006, USA; University of New England, Applied Nutrition & Global Public Health, Biddeford, ME, USA.
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Barnes RA, Morrison M, Flack JR, Ross GP, Smart CE, Collins CE, MacDonald‐Wicks L. Medical nutrition therapy for gestational diabetes mellitus in Australia: What has changed in 10 years and how does current practice compare with best practice? J Hum Nutr Diet 2022; 35:1059-1070. [PMID: 35384099 PMCID: PMC9790639 DOI: 10.1111/jhn.13013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 03/29/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND The present study aimed to report Australian dietetic practice regarding management of gestational diabetes mellitus (GDM) and to make comparisons with the findings from a 2009 survey of dietitians and with the Academy of Nutrition and Dietetics Evidence-Based Nutrition Practice Guidelines (NPG). METHODS Cross-sectional surveys were conducted in 2019 and 2009 of dietitians providing medical nutrition therapy (MNT) to women with GDM in Australia. The present study compares responses on demographics, dietetic assessment and interventions, and guideline use in 2019 vs. 2009. RESULTS In total, 149 dietitians (2019) and 220 (2009) met survey inclusion criteria. In both surveys >60% of respondents reported dietary interventions aiming for >45% energy from carbohydrate, 15%-25% energy from protein and 15%-30% energy from fat. Many variations in MNT found in 2009 continued to be evident in 2019, including the percentage of energy from carbohydrate aimed for (30%-65% in 2019 vs. 20%-75% in 2009) and the wide range in the recommended minimum daily carbohydrate intake (40-220 and 60-300 g). Few dietitians reported aiming for the NPG minimum of 175 g of carbohydrate daily in both surveys (32% in 2019 vs. 26% in 2009). There were, however, some significant increases in MNT consistent with NPG recommendations in 2019 vs. 2009, including the minimum frequency of visits provided (49%, n = 61 vs. 33%, n = 69; p < 0.001) and provision of gestational weight gain advice (59%, n = 95 vs. 40%, n = 195; p < 0.05). CONCLUSIONS Although many dietitians continue to provide MNT consistent with existing NPG, there is a need to support greater uptake, especially for recommendations regarding carbohydrate intake.
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Affiliation(s)
- Robyn A. Barnes
- Diabetes CentreBankstown‐Lidcombe HospitalBankstownNSWAustralia,School of Health Sciences, College of Health, Medicine and WellbeingThe University of NewcastleCallaghanNSWAustralia
| | - Melinda Morrison
- Diabetes NSW & ACTGlebeNSWAustralia,Diabetes AustraliaCanberraACTAustralia
| | - Jeff R. Flack
- Diabetes CentreBankstown‐Lidcombe HospitalBankstownNSWAustralia,Faculty of MedicineUniversity of New South WalesSydneyNSWAustralia,School of MedicineWestern Sydney UniversitySydneyNSWAustralia
| | - Glynis P. Ross
- Diabetes CentreBankstown‐Lidcombe HospitalBankstownNSWAustralia,Faculty of Medicine and HealthUniversity of SydneySydneyNSWAustralia
| | - Carmel E. Smart
- School of Health Sciences, College of Health, Medicine and WellbeingThe University of NewcastleCallaghanNSWAustralia,Department of Paediatric Endocrinology and DiabetesJohn Hunter Children's HospitalNewcastleNSWAustralia
| | - Clare E. Collins
- School of Health Sciences, College of Health, Medicine and WellbeingThe University of NewcastleCallaghanNSWAustralia,Priority Research Centre in Physical Activity and NutritionThe University of NewcastleCallaghanNSWAustralia
| | - Lesley MacDonald‐Wicks
- School of Health Sciences, College of Health, Medicine and WellbeingThe University of NewcastleCallaghanNSWAustralia,Priority Research Centre in Physical Activity and NutritionThe University of NewcastleCallaghanNSWAustralia
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Sripongpun P, Churuangsuk C, Bunchorntavakul C. Current Evidence Concerning Effects of Ketogenic Diet and Intermittent Fasting in Patients with Nonalcoholic Fatty Liver. J Clin Transl Hepatol 2022; 10:730-739. [PMID: 36062288 PMCID: PMC9396320 DOI: 10.14218/jcth.2021.00494] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/04/2022] [Accepted: 04/10/2022] [Indexed: 12/04/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is emerging globally, while no therapeutic medication has been approved as an effective treatment to date, lifestyle intervention through dietary modification and physical exercise plays a critical role in NAFLD management. In terms of dietary modification, Mediterranean diet is the most studied dietary pattern and is recommended in many guidelines, however, it may not be feasible and affordable for many patients. Recently, a ketogenic diet and intermittent fasting have gained public attention and have been studied in the role of weight management. This article reviews specifically whether these trendy dietary patterns have an effect on NAFLD outcomes regarding intrahepatic fat content, fibrosis, and liver enzymes, the scientific rationales behind these particular dietary patterns, as well as the safety concerns in some certain patient groups.
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Affiliation(s)
- Pimsiri Sripongpun
- Gastroenterology and Hepatology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Chaitong Churuangsuk
- Nutrition and Obesity Management Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Chalermrat Bunchorntavakul
- Division of Gastroenterology and Hepatology, Department of Medicine, Rajavithi Hospital, Rangsit University, Bangkok, Thailand
- Correspondence to: Chalermrat Bunchorntavakul, Division of Gastroenterology and Hepatology, Department of Medicine, Rajavithi Hospital, College of Medicine, Rangsit University, Phayathai Road, Ratchathewi District, Bangkok 10400, Thailand. ORCID: https://orcid.org/0000-0002-8842-032X. Tel.: +66-2-354-8108-9, Fax: +66-2-3548179, E-mail:
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6
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Churuangsuk C, Hall J, Reynolds A, Griffin SJ, Combet E, Lean MEJ. Diets for weight management in adults with type 2 diabetes: an umbrella review of published meta-analyses and systematic review of trials of diets for diabetes remission. Diabetologia 2022; 65:14-36. [PMID: 34796367 PMCID: PMC8660762 DOI: 10.1007/s00125-021-05577-2] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 07/28/2021] [Indexed: 01/11/2023]
Abstract
AIMS/HYPOTHESIS Weight reduction is fundamental for type 2 diabetes management and remission, but uncertainty exists over which diet type is best to achieve and maintain weight loss. We evaluated dietary approaches for weight loss, and remission, in people with type 2 diabetes to inform practice and clinical guidelines. METHODS First, we conducted a systematic review of published meta-analyses of RCTs of weight-loss diets. We searched MEDLINE (Ovid), PubMed, Web of Science and Cochrane Database of Systematic Reviews, up to 7 May 2021. We synthesised weight loss findings stratified by diet types and assessed meta-analyses quality with A Measurement Tool to Assess Systematic Reviews (AMSTAR) 2. We assessed certainty of pooled results of each meta-analysis using Grading of Recommendations, Assessment, Development and Evaluations (GRADE) (PROSPERO CRD42020169258). Second, we conducted a systematic review of any intervention studies reporting type 2 diabetes remission with weight-loss diets, in MEDLINE (via PubMed), Embase and Cochrane Central Register of Controlled Trials, up to 10 May 2021. Findings were synthesised by diet type and study quality (Cochrane Risk of Bias tool 2.0 and Risk Of Bias In Non-randomised Studies - of Interventions [ROBINS-I]), with GRADE applied (PROSPERO CRD42020208878). RESULTS We identified 19 meta-analyses of weight-loss diets, involving 2-23 primary trials (n = 100-1587), published 2013-2021. Twelve were 'critically low' or 'low' AMSTAR 2 quality, with seven 'high' quality. Greatest weight loss was reported with very low energy diets, 1.7-2.1 MJ/day (400-500 kcal) for 8-12 weeks (high-quality meta-analysis, GRADE low), achieving 6.6 kg (95% CI -9.5, -3.7) greater weight loss than low-energy diets (4.2-6.3 MJ/day [1000-1500 kcal]). Formula meal replacements (high quality, GRADE moderate) achieved 2.4 kg (95% CI -3.3, -1.4) greater weight loss over 12-52 weeks. Low-carbohydrate diets were no better for weight loss than higher-carbohydrate/low-fat diets (high quality, GRADE high). High-protein, Mediterranean, high-monounsaturated-fatty-acid, vegetarian and low-glycaemic-index diets all achieved minimal (0.3-2 kg) or no difference from control diets (low to critically low quality, GRADE very low/moderate). For type 2 diabetes remission, of 373 records, 16 met inclusion criteria. Remissions at 1 year were reported for a median 54% of participants in RCTs including initial low-energy total diet replacement (low-risk-of-bias study, GRADE high), and 11% and 15% for meal replacements and Mediterranean diets, respectively (some concerns for risk of bias in studies, GRADE moderate/low). For ketogenic/very low-carbohydrate and very low-energy food-based diets, the evidence for remission (20% and 22%, respectively) has serious and critical risk of bias, and GRADE certainty is very low. CONCLUSIONS/INTERPRETATION Published meta-analyses of hypocaloric diets for weight management in people with type 2 diabetes do not support any particular macronutrient profile or style over others. Very low energy diets and formula meal replacement appear the most effective approaches, generally providing less energy than self-administered food-based diets. Programmes including a hypocaloric formula 'total diet replacement' induction phase were most effective for type 2 diabetes remission. Most of the evidence is restricted to 1 year or less. Well-conducted research is needed to assess longer-term impacts on weight, glycaemic control, clinical outcomes and diabetes complications.
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Affiliation(s)
- Chaitong Churuangsuk
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Julien Hall
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Andrew Reynolds
- Department of Medicine, University of Otago, Dunedin, Otago, New Zealand
- Edgar National Centre for Diabetes and Obesity Research, University of Otago, Dunedin, Otago, New Zealand
| | - Simon J Griffin
- MRC Epidemiology Unit, Institute of Metabolic Science, School of Clinical Medicine, University of Cambridge, Cambridge, UK
- Primary Care Unit, Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge, UK
| | - Emilie Combet
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Michael E J Lean
- Human Nutrition, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK.
- Edgar National Centre for Diabetes and Obesity Research, University of Otago, Dunedin, Otago, New Zealand.
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7
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Иванникова ЕВ, Алташина МВ, Трошина ЕА. [The ketogenic diet: history, mechanism of action, indications and contraindications]. PROBLEMY ENDOKRINOLOGII 2021; 68:49-72. [PMID: 35262297 PMCID: PMC9761873 DOI: 10.14341/probl12724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 10/20/2021] [Accepted: 11/01/2021] [Indexed: 01/09/2023]
Abstract
Low-carb diets have been successfully used to alleviate a number of severe neurological diseases for about 100 years. The publication of the results of new studies suggesting that this type of diet may play a therapeutic role in other pathologies such as diabetes, obesity, polycystic ovary syndrome, and oncology is of particular interest for both doctors and the public. However, the long-term safety of using a low-carb or ketogenic diet, as well as its impact, primarily on the risks of developing cardiovascular diseases, remains poorly studied. This article presents the results of observation of patients against the background of a low-carbohydrate diet, both in the short-term perspective as well as provides an assessment of its long-term consequences.
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Affiliation(s)
| | - М. В. Алташина
- Национальный медицинский исследовательский центр
эндокринологии
| | - Е. А. Трошина
- Национальный медицинский исследовательский центр
эндокринологии
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8
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Setayesh L, Ebrahimi R, Pooyan S, Yarizadeh H, Rashidbeygi E, Badrooj N, Imani H, Mirzaei K. The possible mediatory role of adipokines in the association between low carbohydrate diet and depressive symptoms among overweight and obese women. PLoS One 2021; 16:e0257275. [PMID: 34516574 PMCID: PMC8437289 DOI: 10.1371/journal.pone.0257275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/28/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Previous studies showed the possible association between obesity, dietary pattern, and depressive symptoms. Due to the lack of enough data to confirm the association of obesity and depression in the Middle East, here, we aimed to explore the possible mediatory role of adipokines Galectin-3, transforming growth factor-beta (TGF-β), and endothelial plasminogen activator inhibitor (PAI-1) in the association between low carbohydrate diet (LCD) and depressive symptoms. METHODS A total of 256 women aged 17-56 years old were grouped based on their LCD score. Depression anxiety stress scales-21 (DASS-21) self-administered questionnaire was used to evaluate the three negative emotional states of stress, depressive symptoms, and anxiety. Body composition and dietary intake were assessed. Enzyme-linked immunosorbent assay (ELISA) was used to measure the serum levels of Galectin-3, TGF-β, and PAI-1. RESULTS No significant difference was observed regarding Galectin-3, TGF-β, and PAI-1 levels between the groups with dissimilar adherence to LCD or the groups with different levels of depressive symptoms (P>0.05). However, there was a negative association between LCD score as a covariant and depressive symptoms as an independent variable (P = 0.02) and remarkably, a regression model linear analysis using Galectin-3, TGF-β, and PAI-1 as confounding variables indicated the mediatory role of these adipokines in this association (P>0.05). In other words, adipokines eliminated the significance of the relationship between adherence to LCD and depressive symptoms. CONCLUSION It seems that higher adherence to LCD is probably associated with a lower prevalence of depressive symptoms in obese adults through the mediatory role of adipokines.
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Affiliation(s)
- Leila Setayesh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
- Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Reyhane Ebrahimi
- Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Pooyan
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Habib Yarizadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Elaheh Rashidbeygi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Negin Badrooj
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Hossein Imani
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
- * E-mail: (KM); (HI)
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
- * E-mail: (KM); (HI)
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9
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Ross LJ, Byrnes A, Hay RL, Cawte A, Musial JE. Exploring the highs and lows of very low carbohydrate high fat diets on weight loss and diabetes- and cardiovascular disease-related risk markers: A systematic review. Nutr Diet 2020; 78:41-56. [PMID: 33283417 DOI: 10.1111/1747-0080.12649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/14/2020] [Accepted: 10/21/2020] [Indexed: 12/14/2022]
Abstract
AIM Very low carbohydrate high fat diets (VLCHF) are increasingly popular for weight loss and diabetes management, but the risk implications of long-term adherence to a high-fat-diet remain unclear, especially in high-risk populations. This review aimed to examine adherence, weight loss, diabetes- and cardiovascular disease (CVD)-related risk markers in adults consuming VLCHF diets. METHODS Online databases were searched for randomised controlled trials ≥3 months duration that met a pre-defined macronutrient prescription: VLCHF ≤25%E carbohydrate, >35%E fat; low fat (LF) ≥45%E carbohydrate, ≤30%E fat; and reported energy, saturated fat (SFA), weight, blood glucose, cholesterol and blood pressure (BP). Studies were excluded if the macronutrient prescription was not targeted (n = 32); not met (n = 17) or not reported (n = 13). RESULTS Eight studies included: 1217 commenced; 922 completed overweight and obese adults. Diets were isocaloric moderately energy-restricted, closely monitored with ongoing support from dietitians, physicians, and/or nurses. Four studies reported non-adherence beyond 3 months (n = 3) and 6 months (n = 1) despite interventions of 12, 15 and 24 months. VLCHF diets were high in fat and SFA (fat 49%-56%E; SFA 11%-21%E) compared to LF diets (fat 13%-29%E; SFA 5%-11%E). All groups achieved significant weight loss and improvements in BP and blood glucose. LDL-C reduction favoured LF, P < .05; increased HDL-C and reduced triglyceride levels favoured VLCHF, P < .05. CONCLUSIONS VLCHF and LF diets with moderate energy restriction demonstrate similar weight loss and improvements to BP to 3 months. However, adherence is likely poor without intensive support from health professionals. Dietary SFA should be monitored to ensure recommended intakes, but longer-term studies with high adherence are required to confirm the level of CVD-risk and potential harms.
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Affiliation(s)
- Lynda J Ross
- School of Nutrition and Exercise Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Nutrition and Dietetics, The Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia.,School of Allied Health Sciences, Griffith University, Gold Coast, Queensland, Australia
| | - Angela Byrnes
- Department of Nutrition and Dietetics, The Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia
| | - Robin L Hay
- Department of Nutrition and Dietetics, The Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia
| | - Andrea Cawte
- School of Nutrition and Exercise Sciences, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Nutrition and Dietetics, The Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia
| | - Jane E Musial
- Department of Nutrition and Dietetics, The Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia
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