Daily Archives: 26 August 2024

Preventing Type 2 Diabetes Through Diet and Exercise, Regardless of Genetic Predisposition

A study, unique in its focus on the impact of lifestyle changes on type 2 diabetes risk, was conducted by the University of Eastern Finland. It demonstrated for the first time that adhering to a healthy diet and engaging in regular physical exercise can mitigate the risk of type 2 diabetes, even among individuals who possess a high genetic predisposition for the disease. This finding underscores that lifestyle modifications are beneficial universally, irrespective of one’s genetic backdrop.

Type 2 diabetes presents a formidable challenge globally. Data from the International Diabetes Federation (IDF) reveals that one in eleven adults across the globe is diagnosed with diabetes, with type 2 diabetes constituting approximately 90% of these cases. Extensive research has identified over 500 genetic markers that increase susceptibility to type 2 diabetes. However, lifestyle choices also play a crucial role in the likelihood of developing this condition. Key lifestyle risk factors include being overweight, a diet low in fibre, high consumption of saturated fats, and insufficient physical activity. While previous research has established that lifestyle alterations can effectively stave off type 2 diabetes, it was previously unclear if such preventive measures could also benefit those with a high genetic risk.

The study in question, known as the T2D-GENE Trial, spanned three years and included nearly 1,000 men aged between 50 and 75 from eastern Finland. These participants were selected based on their elevated fasting glucose levels at the start of the study. More than 600 of these men were placed in the lifestyle intervention group, which received comprehensive guidance on adopting healthier lifestyles through group meetings and support via a specially designed web portal. Participants were selected from the lowest and highest tertiles of genetic risk—representing either a high or low genetic likelihood of developing type 2 diabetes. Notably, the genetic risk profiles of participants were not disclosed to them or the researchers during the study. Regardless of their genetic risk category, all participants in the intervention group received identical lifestyle advice.

The men in the lifestyle intervention group exhibited notable improvements in their diets; they increased their fibre intake, enhanced the quality of fats consumed, and boosted their consumption of vegetables, fruits, and berries. Although the study was not primarily focused on weight loss, a reduction in body weight was observed. The participants, who were already quite active at the outset, successfully maintained their vigorous exercise routines. These lifestyle changes contributed to a significant reduction in the deterioration of glucose metabolism. Consequently, the incidence of type 2 diabetes was substantially lower in the lifestyle intervention group compared to the control group. The positive impact of the lifestyle changes was significant across participants, regardless of their genetic risk level.

Dr Maria Lankinen, a University Lecturer and Docent at the University of Eastern Finland and the study’s lead author, emphasised that these findings should motivate everyone to embrace lifestyle modifications that enhance health. Additionally, she highlighted the efficacy of providing lifestyle guidance through group sessions and digital platforms, noting that such approaches can lead to significant healthcare savings. This study not only reaffirms the importance of healthy living habits in preventing type 2 diabetes but also illustrates that genetic predisposition does not negate the potential benefits of proactive lifestyle changes.

More information: Maria Anneli Lankinen et al, Effects of Genetic Risk on Incident Type 2 Diabetes and Glycemia: The T2D-GENE Lifestyle Intervention Trial, The Journal of Clinical Endocrinology and Metabolism. DOI: 10.1210/clinem/dgae422

Journal information: The Journal of Clinical Endocrinology and Metabolism Provided by University of Eastern Finland

Exercise Mitigates the Death Risk Linked to Prolonged Sitting in Adults Diagnosed with Diabetes

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A new study from Columbia University Mailman School of Public Health has found that adults with diabetes who adhere to recommended physical activity guidelines can counterbalance the mortality risks linked to excessive sitting. This research marks the first to demonstrate that sufficient exercise can negate the dangers of prolonged daily sitting, even in individuals with diabetes, with the findings reported in the journal Diabetes Care.

The study’s lead author, Wen Dai, MPH, highlighted the urgency of managing the heightened mortality risk within this vulnerable group, especially given the diabetes epidemic and the tendency for those affected to be less active. The research underscored that sedentary behaviour is not just a personal issue but a significant public health concern, given its association with increased mortality risks across the general population.

Utilising data from the 2007-2018 National Health and Nutrition Examination Surveys (NHANES) that tracked individuals aged 20 or older who met the American Diabetes Association’s criteria for diabetes, the study followed participants until 2019 to monitor their mortality status. Both sitting time and physical activity levels were self-reported, with additional information on sociodemographics, lifestyle, and health conditions gathered via computer-assisted personal interviews.

Physical activity was divided into three categories based on the time spent in moderate to vigorous activities: inactive (less than 10 minutes per week), insufficiently active (10-149 minutes per week), and active (150 minutes per week or more). Notably, 38 per cent of diabetic adults were categorised as inactive. Regarding sedentary behaviour, many diabetic adults reported sitting for eight or more hours daily. The study spanned approximately six years, during which 1,278 deaths from all causes and 354 from heart disease were recorded among a cohort with an average age of 60, where 48 per cent were female and 61 per cent were non-Hispanic White.

The findings revealed that high levels of sitting posed a greater mortality risk for those who were inactive or insufficiently active. Still, this risk was mitigated for those who were sufficiently active. This pattern held for both all-cause and heart disease-related mortality.

The study’s senior author, Sandra Albrecht, PhD, an assistant professor of Epidemiology at the Columbia Mailman School, emphasised the importance of supporting patients in maintaining active lifestyles, particularly those whose jobs or life situations require extended periods of sitting, such as drivers or office workers. This research supports the critical need for adherence to physical activity guidelines to improve health outcomes in adults with diabetes.

More information: Wen Dai et al, Sitting Time and Its Interaction With Physical Activity in Relation to All-Cause and Heart Disease Mortality in U.S. Adults With Diabetes, Diabetes Care. DOI: 10.2337/dc24-0673

Journal information: Diabetes Care Provided by Columbia University Mailman School of Public Health

It Only Takes 15 Minutes a Day to Transform Your Health and Well-being

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Workplaces are continually evolving with innovative wellness initiatives like Corporate Cup events, lunchtime yoga sessions, and ‘walk and talk’ meetings designed to boost employee physical activity. A new study by researchers from the University of South Australia reveals that just 15 minutes of targeted activity, enhanced by gamification, can significantly advance an individual’s health journey. This research assessed the impact of a gamified wellness program—the 15 Minute Challenge—on 11,575 employees across 73 companies in Australia, New Zealand, and the UK, finding that 95% of participants met or surpassed the recommended exercise guidelines.

Over six weeks, the challenge led to an average increase of 12 minutes in daily physical activity, or 85 minutes weekly, with participants typically engaging in 45 minutes of exercise daily. Alongside increased activity levels, improvements were noted in fitness (14%), energy (12%), overall health (8%), sleep quality (8%), and mood (7.1%). These results are significant considering the World Health Organization’s guidelines, which recommend that adults aged 18-64 engage in 150–300 minutes of moderate-intensity or 75–150 minutes of vigorous-intensity aerobic physical activity weekly.

Dr Ben Singh, lead researcher from UniSA, emphasized the efficacy of the 15 Minute Challenge in enhancing workplace health and wellness. He pointed out the extensive benefits of regular physical activity, which not only helps in managing and preventing chronic diseases such as cardiovascular conditions, diabetes, and cancer but also reduces symptoms of depression and anxiety. The fact that about half of Australian adults do not meet the recommended levels of physical activity underlines the necessity of workplace wellness programs, with the 15 Minute Challenge standing out as a promising solution.

The study demonstrated that a minimal daily commitment to physical activity can lead to significant health improvements. The 15 Minute Challenge, with its unique approach, encourages participants to exceed the minimal goals set by the challenge. This approach helps to build regular exercise habits, particularly among those who are predominantly sedentary, making the 15-minute goal a catalyst for more substantial physical activity. Many participants found themselves not just meeting but exceeding the national health recommendations, proving the effectiveness of the challenge.

Professor Carol Maher, co-researcher at UniSA, attributed part of the program’s success to its gamification elements and the social dynamics encouraged through the app. The app fostered team collaboration and accountability through friendly competition, which is crucial in motivating participants to stay committed and connected. Maher emphasized that addressing physical inactivity is a collective responsibility and that employers who initiate effective, enjoyable, and cost-effective programs like the 15 Minute Challenge can reap dual benefits.

Not only does such an initiative enhance the health and well-being of employees, but it also boosts their productivity, satisfaction, and stress levels while reducing the likelihood of sickness. This makes sustainable and scalable wellness programs essential elements of any organization’s health and wellness strategy, positioning the 15 Minute Challenge as a model for positive change in workplace environments.

More information: Ben Singh et al, Evaluation of the “15 Minute Challenge”: A Workplace Health and Wellbeing Program, Healthcare. DOI: 10.3390/healthcare12131255

Journal information: Healthcare Provided by University of South Australia

Research Reveals Improved Sleep Linked to Reduced Loneliness

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A study slated for presentation at the SLEEP 2024 annual meeting has revealed significant findings on the correlation between improved sleep health and reduced levels of loneliness. This relationship is notably stronger among younger adults. The research found that better sleep health is associated with significantly lower total, emotional, and social loneliness rates. While the benefits of good sleep in reducing total and emotional loneliness were observed across all ages, younger individuals showed a more pronounced improvement. However, the influence of age was not observed in the association between sleep health and social loneliness. These findings underscore the importance of sleep health in managing loneliness.

Joseph Dzierzewski, the lead author and principal investigator of the study, highlighted the potential benefits of improving sleep health in managing loneliness. With a doctorate in clinical psychology and serving as the vice president of research at the National Sleep Foundation in Washington, D.C., Dzierzewski emphasized the need for healthcare providers to understand and address loneliness. “Our results highlight the critical role of sleep in managing loneliness across the adult lifespan,” he said, suggesting that improving sleep health could particularly benefit younger adults in combating loneliness.

The American Academy of Sleep Medicine and the Sleep Research Society recommend that adults consistently achieve at least seven hours of sleep per night to ensure optimal health, productivity, and daytime alertness. This guidance aligns with the study’s findings, indicating a fundamental connection between sleep and overall well-being.

The study involved 2,297 adults, 51% of whom were male, with an average age of 44. Participants engaged in the research by completing an online sleep health questionnaire alongside a loneliness scale. The team conducted a comprehensive analysis using correlation and linear regression methods, supplemented by moderation analyses, to dissect the complex relationships between sleep health and feelings of loneliness.

An advisory issued by the U.S. surgeon general in 2023 highlighted the escalating public health crisis related to loneliness, isolation, and lack of connection, which has worsened since the onset of the COVID-19 pandemic. The advisory noted that even before the pandemic, about half of U.S. adults reported significant levels of loneliness, underscoring the persistent and pervasive nature of this issue.

The study’s authors argue that efforts to mitigate loneliness should incorporate strategies to promote sleep health, especially targeting younger adults. Dzierzewski remarked on the intriguing and unexplained reasons why younger adults might benefit more from sleep-related interventions against loneliness than older adults, identifying it as a compelling direction for future research.

More information: Spencer Nielson et al, Rested and Connected: An Exploration of Sleep Health and Loneliness Across the Adult Lifespan, SLEEP. DOI: 10.1093/sleep/zsae067.0746

Journal information: SLEEP Provided by American Academy of Sleep Medicine