整理 | GLP1减重宝典内容团队 近期，司美格鲁肽因显著的减重效果备受关注，但随之而来的"跟风式用药"现象却令人担忧。 一些人将药物当作"应急瘦身针"，不规律注射甚 至自行停药，结果不仅体重反弹，不良反应也明显增多。 医学界纷纷呼吁：肥胖是一种慢性病，减重药物的使用必须严格遵循长期管理方案， 盲目追求短期效果往往会适得其反。 还有一些人达到平台期后，继续用同一剂量的司美格鲁肽大多只能维持原体重或逐渐失效，从而停止用药。这些做法都是不对的。下面就来分析 下理由。 ▍"打一针瘦五斤"？不可药物滥用 在朋友眼中，身高158cm、体重110斤的许女士并不胖，可她却对减肥有着强烈的渴望。她打完第一针司美格鲁肽后的第一周，体重就降到了106 斤，她满心期待能回到体重不过百的状态。 然而，中国医学科学院内分泌科的专家指出，司美格鲁肽主要是通过调节食欲、延缓胃排空来发挥减重作用的，只有维持稳定的血药浓度，才能 达到理想的减重效果。如果随意注射、中断用药，就会打破身体的代谢节奏，不仅会影响药物的疗效，还可能加重胃肠道的不良反应，甚至有可 能诱发胰腺炎等严重风险。 北京协和医院肥胖门诊的医生也强调，这类药物并非短期就能解决问题 ...

Core Viewpoint - Obesity has become a global public health issue, with over 890 million adults classified as obese, accounting for 13% of the total population. The rise in obesity is linked to lifestyle changes and has increased the risk of chronic diseases such as cardiovascular issues. Traditional weight loss strategies of "eat less, move more" are often insufficient, leading to a growing interest in pharmacological interventions like the popular weight loss drug semaglutide, which suppresses appetite [7][12]. Group 1 - The World Health Organization reports that the number of obese adults has surpassed 890 million globally, representing 13% of the total population. This trend has been particularly pronounced over the past 40 years, with significant increases in countries like China [7]. - A new study published in the journal "Cell" reveals the discovery of a group of previously unknown neurons in the brains of mice that regulate appetite by sensing food intake and signaling when to stop eating through the secretion of cholecystokinin (CCK) [7][8]. - These neurons are located in the brainstem, a primitive and evolutionarily conserved area of the vertebrate brain, suggesting that similar mechanisms may exist in humans [8]. Group 2 - The newly discovered neurons differ fundamentally from previously known satiety-regulating neurons, as they can continuously track food information during digestion and integrate various hormonal signals to determine when to stop eating [8][10]. - In animal experiments, researchers used optogenetics to control the activity of these neurons, demonstrating that activating them led to slower eating and reduced food intake in mice [10]. - The study also found that GLP-1 receptor agonists, the active ingredient in popular weight loss drugs, can activate these neurons, while appetite-stimulating hormones decrease their activity, indicating their role in dynamically tracking the eating process [12].

撰文丨王聪 编辑丨王多鱼 排版丨水成文 预防 老年 2 型糖尿病患者 死亡的长期 体重指数 （BMI） 阈值，目前尚不明确。 近日，上海交通大学医学院附属第六人民医院 包玉倩 教授 、 上海市疾病预防控制中心疾病预防控制信息 所 夏天 主任医师等，在 Cell 子刊 Cell Reports Medicine 上发表了题为 ： Longitudinal body mass index exposure-based threshold to prevent mortality for populations with type 2 diabetes mellitus 的 研究论文。 该研究揭示了基于纵向 体重指数 （BMI） 暴露的预防 2 型糖尿病 患者死亡率的阈值， 在 ≥ 40岁的中国 2 型糖尿病患者中，持续的体重指数 （BMI） ≥ 27 kg/m² 会增加死亡风险，而 BMI 在 18.5-26.9 kg/m² 之间是最理想的。 其次 ，现有的证据主要依赖于单次 BMI 测量，未能捕捉到随时间变化的体重动态变化。这忽略了诸如体重 增加、体重减轻和体重反弹等临床关键模式，可能会导致风险评估出现偏差。 ...

Core Viewpoint - Obesity is a significant global public health crisis linked to various chronic diseases, characterized by persistent low-grade inflammation that exacerbates disease progression [6][7]. Group 1: Research Findings - A study published in Science reveals that obesity reshapes macrophage nucleotide metabolism, leading to hyperactivation of the NLRP3 inflammasome and uncontrolled inflammation, accelerating disease progression [3][4]. - The study identifies SAMHD1 as an intrinsic inhibitor in macrophages that can suppress NLRP3 inflammasome activation across species from fish to humans [3]. Group 2: Mechanisms of Inflammation - The NLRP3 inflammasome acts as an "alarm" in the immune system, activated by tissue damage or stress, producing pro-inflammatory cytokines like IL-1β, which, in obesity, disrupt insulin signaling and accelerate metabolic diseases [9]. - Obese individuals exhibit an increased amount of oxidized mitochondrial DNA (ox-mtDNA) in their immune cells, which activates the NLRP3 inflammasome [11][12]. Group 3: Role of SAMHD1 - SAMHD1 is crucial for maintaining nucleotide balance in cells, and obesity leads to its phosphorylation and functional impairment, resulting in excessive NLRP3 inflammasome activation [14]. - The absence of functional SAMHD1 in animal models leads to NLRP3 hyperactivation, indicating its role as a regulatory mechanism against inflammation [14]. Group 4: Metabolic Reprogramming - Obesity alters the metabolic pathways in immune cells, allowing excess dNTPs to enter mitochondria via nucleotide transport proteins, bypassing normal synthesis pathways and leading to uncontrolled mtDNA synthesis [16]. - Blocking dNTP transport into mitochondria can reverse obesity-related inflammation, suggesting a potential therapeutic direction [16]. Group 5: Clinical Implications - Mice lacking SAMHD1 exhibit typical metabolic abnormalities after a high-fat diet, and blocking dNTP transport alleviates these symptoms [18]. - The study's findings indicate that targeting mitochondrial dNTP transport could lead to new therapies for chronic inflammation and metabolic diseases associated with obesity, offering a more precise approach than traditional immune response suppression methods [18].

Core Viewpoint - Acute coronary syndrome (ACS) is a serious heart condition characterized by symptoms such as chest pain and shortness of breath, primarily caused by blockages in coronary arteries. Understanding and controlling risk factors is crucial for prevention [1]. Group 1: Risk Factors for Acute Coronary Syndrome - Hypertension is a major risk factor for ACS, leading to arterial damage and increased heart disease risk if uncontrolled [2]. - Hyperlipidemia, particularly high cholesterol and triglycerides, contributes to coronary artery disease by forming plaques that can block blood vessels [2]. - Smoking damages blood vessel linings and accelerates atherosclerosis, increasing the risk of coronary artery blockage [2]. - Diabetes leads to elevated blood sugar levels that damage blood vessels and increase the likelihood of ACS [2][3]. - Obesity, especially abdominal obesity, is linked to increased ACS risk due to its association with hypertension, hyperlipidemia, and diabetes [3]. - Sedentary lifestyle exacerbates heart health issues, as exercise improves blood lipid levels and reduces blood pressure [3]. - Genetic factors play a role in ACS risk, particularly if there is a family history of heart disease [3]. - Psychological stress from various life pressures can elevate blood pressure and increase the risk of heart disease [3]. Group 2: Effective Control Methods for Risk Factors - Regular blood pressure monitoring and maintaining levels below 120/80 mmHg are essential for controlling hypertension [4]. - Adopting a healthy diet rich in fiber and low in saturated fats can help manage blood lipid levels [5]. - Quitting smoking is one of the most effective methods to prevent ACS, leading to improved vascular health [5]. - Diabetic patients should monitor blood sugar levels and maintain a balanced diet to control diabetes effectively [5]. - Maintaining a healthy weight through proper diet and exercise can reduce the risk of heart disease and related conditions [5]. - Engaging in regular physical activity, such as walking or swimming, enhances cardiovascular health and lowers ACS risk [5]. - Stress management techniques, including meditation and yoga, can help alleviate psychological burdens and support heart health [5]. - Regular health check-ups, especially for those with risk factors, can facilitate early detection and intervention for potential health issues [6].

Group 1 - The core finding of the research indicates that obesity impairs gut repair through elevated levels of adipocyte fatty acid-binding protein (AFABP), which leads to iron overload in intestinal stem cells (ISCs) [2][6] - The study identifies the adipose tissue-gut signaling axis as a new therapeutic target for obesity-related intestinal diseases [3][7] - Increased AFABP secretion in obesity disrupts iron homeostasis in ISCs, hindering their differentiation, which is crucial for gut repair after injury [6] Group 2 - Overexpression of AFABP in adipocytes of lean mice obstructs ISC differentiation and gut repair, while reducing AFABP levels or using AFABP inhibitors, iron chelators, or peroxisome proliferator-activated receptor (PPAR) agonists can alleviate colitis in obese mice [6]

Core Viewpoint - A 28-year-old patient, weighing over 200 pounds, was successfully treated for acute cerebral hemorrhage at Nanjing Medical University Second Affiliated Hospital, highlighting the importance of timely medical intervention and the risks associated with obesity and unhealthy lifestyle choices [1][2]. Group 1: Patient Case Details - The patient experienced severe symptoms including intense headache, nausea, and loss of motor function after a night of heavy eating and drinking [1]. - Initial CT scans revealed over 50ml of bleeding in the basal ganglia, leading to life-threatening brain herniation [1]. - The emergency department activated a green channel for urgent transfer to neurosurgery due to the critical condition of the patient [1]. Group 2: Medical Intervention - The neurosurgery team, led by Director Guan Jingyu, identified dangerously high blood pressure at 200/110 mmHg and the need for immediate surgery to remove the hematoma [2]. - The patient's obesity posed significant challenges for the surgical procedure, including difficulties with intubation and increased risks of postoperative complications [2]. - A personalized surgical plan was developed, and after over two hours of surgery, the hematoma was successfully removed, alleviating the brain herniation [2]. Group 3: Patient Recovery and Lifestyle Changes - Post-surgery, the patient quickly regained consciousness and was moved to a regular ward for rehabilitation [2]. - The patient expressed regret over neglecting health indicators like blood pressure and maintaining a poor diet, vowing to adopt a healthier lifestyle moving forward [2].

Core Viewpoint - The relationship between fatty liver and obesity is closely intertwined, with obesity being a significant risk factor for the development of fatty liver disease, and fatty liver potentially exacerbating obesity issues [1][2][6]. Group 1: Relationship Between Fatty Liver and Obesity - Fatty liver occurs when excess fat accumulates in the liver, exceeding 5% of its weight, and is often linked to non-alcoholic fatty liver disease (NAFLD) [1]. - Obese individuals have a significantly higher probability of developing fatty liver due to excess energy intake being stored as fat, which can invade the liver [1]. - The accumulation of fat in the liver can disrupt its metabolic functions, creating a vicious cycle where obesity leads to fatty liver, which in turn worsens obesity [1][6]. Group 2: Potential Hazards of Obesity-Related Fatty Liver - Fatty liver can progressively damage liver function, potentially leading to conditions such as fatty liver inflammation, liver fibrosis, cirrhosis, and even liver cancer if not addressed [2]. - Obesity-related fatty liver is often associated with other metabolic diseases, increasing the risk of cardiovascular diseases such as coronary heart disease and stroke [2]. Group 3: Key Strategies for Healthy Weight Loss - A balanced diet is crucial for weight loss and liver health, with recommendations to reduce daily caloric intake by 300-500 kilocalories to achieve a healthy weight loss of 0.5-1 kilogram per week [3]. - Regular physical activity, including at least 150 minutes of moderate-intensity aerobic exercise weekly, is essential for burning excess fat and improving liver health [4]. - Establishing good lifestyle habits, such as ensuring adequate sleep (7-8 hours), avoiding smoking and excessive alcohol consumption, and managing stress, is vital for effective weight management and liver health [5]. Group 4: Seeking Professional Help - If lifestyle changes do not lead to significant weight loss or if fatty liver conditions worsen, it is important to seek professional medical advice for personalized treatment plans [5].

Core Viewpoint - The article discusses the genetic and physiological mechanisms underlying obesity, particularly focusing on the ob gene in mice and its implications for human obesity and metabolic disorders [7][12][14]. Group 1: Genetic Mechanisms of Obesity - The ob gene is crucial for regulating energy balance, and mutations in this gene can lead to severe obesity and type 2 diabetes, resembling human pathological obesity [7][9]. - The ob gene product is a signaling molecule from adipose tissue that regulates the size of fat reserves [9][10]. - Research has identified five single-gene mutations that can cause obesity phenotypes, with the ob mutation being the first discovered [7][12]. Group 2: Physiological Mechanisms of Energy Balance - Energy balance, defined as the relationship between food intake and energy expenditure, is regulated by physiological processes, particularly in the hypothalamus [12][14]. - The hypothalamic ventromedial nucleus (VMH) is identified as a critical center for satiety regulation, and its damage leads to weight gain due to increased food intake and decreased energy expenditure [12][13]. - The article highlights the need for further exploration of the specific mechanisms by which the central nervous system regulates body weight, including potential endocrine, paracrine, and autocrine effects of the ob protein [14]. Group 3: Implications for Obesity Research - The discovery of the ob gene provides a new perspective on fat and weight regulation, offering deeper insights into the pathophysiological mechanisms of obesity [14]. - The ob gene's role in signaling suggests that it may interact with the central nervous system to modulate eating behavior and autonomic nervous activity [14]. - Future research is needed to clarify the molecular basis of ob RNA expression changes and its implications for obesity management [13][14].

Core Viewpoint - The increasing consumption of sugar-free beverages, often perceived as a healthier choice, is linked to rising health risks, including diabetes and accelerated brain aging. Group 1: Health Risks of Sugar-Free Beverages - Regular consumption of sugar-free drinks is associated with a 38% increased risk of developing type 2 diabetes compared to those who rarely consume them [1] - Drinking artificial sweetener beverages daily can lead to a 21% increase in obesity risk and a 15% increase in type 2 diabetes risk [4] - A study indicates that daily consumption of sugar-free soda can accelerate brain aging by 1.6 years [2] Group 2: Mechanisms and Recommendations - Artificial sweeteners may disrupt the body's metabolic processes, leading to increased cravings for sweet foods and poor dietary choices [5] - The World Health Organization advises against using non-sugar sweeteners for weight control or reducing non-communicable disease risks [3] - For individuals with cardiovascular disease history, caution is advised with sugar alcohols, particularly xylitol and erythritol, due to potential risks [6] Group 3: General Dietary Recommendations - The recommended daily limit for added sugars is no more than 50 grams, ideally below 25 grams, which includes sugars from beverages and other food sources [6] - Healthier alternatives to sugar-free beverages include water, unsweetened tea, and coffee [6]