Publications by authors named "Lean M"

Long COVID (LC) is a complex multisymptom condition with no known disease-modifying treatments. This wait-list-controlled open-label trial tested whether a remotely delivered structured weight management program could improve respective LC symptoms in people living with overweight. Adults with LC (symptoms >12 weeks) and body mass index >27 kg m (>25 kg m for South Asians) were randomized (n = 234, 1:1) to control (n = 116, usual care) or the remotely delivered structured weight management (n = 118, total diet replacement (850 kcal per day) for 12 weeks, followed by food reintroduction and weight loss maintenance support) via minimization and randomization (80:20) to balance dominant LC symptom, sex, age, ethnicity and postcode-based index of multiple deprivation between groups.

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Aims: Ectopic fat is reduced by effective weight management, but difficult to assess clinically.

Methods: We evaluated paired data on 42 participants in the intervention group of the Diabetes Remission Clinical Trial (DiRECT) at baseline, 12 and 24 months after weight loss as indicators of liver fat content measured by 3-point Dixon MRI.

Results: Baseline liver fat was elevated at 13.

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Background: Obesity-associated asthma results in increased morbidity and mortality. We report 1-year asthma outcomes with a weight management regimen, the Counterweight-Plus Programme (CWP), compared with usual care (UC) in a single-center, randomized controlled trial in patients with difficult-to-treat asthma and obesity.

Research Question: Can use of the CWP result in improved asthma control and quality of life compared with UC at 1 year in patients with difficult-to-treat asthma and obesity?

Study Design And Methods: Adults with difficult-to-treat asthma and BMI ≥ 30 kg/m were randomized (1:1 CWP:UC) to treatment.

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Background: Obesity drives metabolic disease development. Preventing weight gain during early adulthood could mitigate later-life chronic disease risk. Increased dietary fibre intake, leading to enhanced colonic microbial fermentation and short-chain fatty acid (SCFA) production, is associated with lower body weight.

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Article Synopsis
  • A study on pulmonary rehabilitation (PR) tailored for difficult-to-treat asthma in individuals with a BMI ≥25 kg/m shows positive outcomes immediately after 8 weeks and at one-year follow-up.
  • Out of 92 participants, significant improvements were noted in asthma control, breathlessness levels, and frequency of exacerbations over the study period.
  • Results indicate that those with worse asthma control at the start were more likely to see significant benefits from the PR, whereas baseline BMI did not predict the level of improvement.
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Background: Remission of early type 2 diabetes (T2D) is possible; however, diet programmes proven effective are unaffordable in many southeast Asian populations where T2D is more frequent and more aggressive at lower body weight and younger age. We evaluate an entirely food-based service.

Methods: This study employed a single-arm intervention and follow-up design for intervention evaluation in existing hospital people with T2D of under 5 years known duration.

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Background: The persistence of symptoms for ≥12 weeks after a COVID-19 infection is known as Long COVID (LC), a condition with unclear pathophysiology and no proven treatments to date. Living with obesity is a risk factor for LC and has symptoms which may overlap with and aggravate LC.

Methods: ReDIRECT is a remotely delivered trial assessing whether weight management can reduce LC symptoms.

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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).

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Empirical evidence for a low normal or reference interval for serum prolactin (PRL) is lacking for men, while the implications of very low PRL levels for human health have never been studied. A clinical state of "PRL deficiency" has not been defined except in relation to lactation. Using data from the European Male Ageing Study (EMAS), we analyzed the distribution of PRL in 3,369 community-dwelling European men, aged 40-80 years at phase-1 and free from acute illnesses.

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Background: An effective prescribing pathway for liraglutide 3 mg, an approved obesity pharmacotherapy, may improve treatment access. This trial compared a targeted prescribing pathway for liraglutide 3 mg with multiple stopping rules in specialist weight management services (SWMS) to standard SWMS care.

Methods: This phase four, two-year, multicentre, open-label, parallel-group, real-world randomized clinical trial (ClinicalTrials.

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Prolactin (PRL) is secreted throughout life in men and women. At elevated levels, its physiological role in pregnancy and lactation, and pathological effects, are well known. However clinical implications of low circulating PRL are not well established.

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This review synthesized the evidence from randomized controlled trials comparing the effect of meal replacements (MRs) as part of a weight loss intervention with conventional food-based weight loss diets on cardiometabolic risk in individuals with pre-diabetes and features of metabolic syndrome. MEDLINE, EMBASE, and Cochrane Library were searched through January 16, 2024. Data were pooled using the generic inverse variance method and expressed as mean difference [95% confidence intervals].

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Background: In DiRECT, a randomised controlled effectiveness trial, weight management intervention after 2 years resulted in mean weight loss of 7·6 kg, with 36% of participants in remission of type 2 diabetes. Of 36 in the intervention group who maintained over 10 kg weight loss at 2 years, 29 (81%) were in remission. Continued low-intensity dietary support was then offered up to 5 years from baseline to intervention participants, aiming to maintain weight loss and gain clinical benefits.

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Background: The Diabetes Remission Clinical Trial (DiRECT) study demonstrated that an intensive and structured weight management program in UK primary care resulted in high rates of diabetes remission in adults with recent onset type 2 diabetes mellitus (T2DM). This study was aimed at evaluating the translation of the DiRECT intervention into an Australian primary care setting.

Methods: All patients enrolled in the DiRECT-Australia Type 2 Diabetes Remission Service in a region of Sydney (Macarthur region, South Western Sydney, Australia) were included.

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Background: Bariatric surgery is a common procedure worldwide for the treatment of severe obesity and associated comorbid conditions but there is a lack of evidence as to medium-term safety and effectiveness outcomes in a United Kingdom setting.

Objective: To establish the clinical outcomes and adverse events of different bariatric surgical procedures, their impact on quality of life and the effect on comorbidities.

Design: Prospective observational cohort study.

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Background: The UK Diabetes Remission Clinical Trial (DiRECT) study was replicated in an Australian primary care setting. This qualitative study aimed to explore and understand the perceptions and experiences of both participants and healthcare professionals (HCPs) involved in the DiRECT-Australia Type 2 Diabetes Remission Service.

Methods: All participants and HCPs delivering the service were invited to participate in semi-structured interviews via online videoconferencing.

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Background: Type 2 diabetes is associated with higher risk of several cancer types. However, the biological intermediates driving this relationship are not fully understood. As novel interventions for treating and managing type 2 diabetes become increasingly available, whether they also disrupt the pathways leading to increased cancer risk is currently unknown.

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The concept of type 2 diabetes remission is evolving rapidly, and gaining wide public and professional interest, following demonstration that with substantial intentional weight loss almost nine in ten people with type 2 diabetes can reduce their HbA level below the diagnostic criterion (48 mmol/mol [6.5%]) without glucose-lowering medications, and improve all features of the metabolic syndrome. Pursuing nomoglycaemia with older drugs was dangerous because of the risk of side effects and hypoglycaemia, so the conventional treatment target was an HbA concentration of 53 mmol/mol (7%), meaning that diabetes was still present and allowing disease progression.

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Purpose Of Review: Obesity is a major driver of heart failure (HF) incidence, and aggravates its pathophysiology. We summarized key reported and ongoing randomized clinical trials of appetite regulation and/or dietary energy restriction in individuals with HF.

Recent Findings: Weight loss can be achieved by structured supervised diet programs with behavioural change, medications, or surgery.

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Thousands of proteins circulate in the bloodstream; identifying those which associate with weight and intervention-induced weight loss may help explain mechanisms of diseases associated with adiposity. We aimed to identify consistent protein signatures of weight loss across independent studies capturing changes in body mass index (BMI). We analysed proteomic data from studies implementing caloric restriction (Diabetes Remission Clinical trial) and bariatric surgery (By-Band-Sleeve), using SomaLogic and Olink Explore1536 technologies, respectively.

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Article Synopsis
  • The ReDIRECT trial aims to see if a remote weight management program, called Counterweight-Plus, can alleviate Long COVID symptoms in individuals with overweight or obesity.
  • It involves 240 participants randomly assigned to either receive usual care or the Counterweight-Plus program for a duration of 12 weeks, focusing on diet replacement and weight loss maintenance.
  • The study includes a personalized approach where participants choose their main Long COVID symptom to track over six months and utilizes various recruitment methods, with results to be published after analysis.
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Article Synopsis
  • The study investigates the effects of a weight-loss intervention on metabolomic patterns in individuals with type 2 diabetes.
  • The analysis involved 574 serum samples from participants in the Diabetes Remission Clinical Trial and utilized advanced technologies like untargeted mass spectrometry and targeted H-NMR spectroscopy.
  • Key findings reveal that significant reductions in certain metabolites, such as branched-chain amino acids and sugars, were associated with weight loss and diabetes remission, suggesting that these metabolomic patterns can potentially be reversed through effective weight management.
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Objective: To determine the extent to which changes in plasma proteins, previously predictive of cardiometabolic outcomes, predict changes in two diabetes remission trials.

Research Design And Methods: We applied SomaSignal predictive tests (each derived from ∼5,000 plasma protein measurements using aptamer-based proteomics assay) to baseline and 1-year samples of trial intervention (Diabetes Remission Clinical Trial [DiRECT], n = 118, and Diabetes Intervention Accentuating Diet and Enhancing Metabolism [DIADEM-I], n = 66) and control (DiRECT, n = 144, DIADEM-I, n = 76) group participants.

Results: Mean (SD) weight loss in DiRECT (U.

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