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Core Viewpoint - China has the highest number of overweight and obese individuals globally, with over half of the adult population affected, leading to significant health and economic implications [2] Group 1: Obesity Statistics - As of 2021, 16.4% of adults in China are classified as obese, and 34.3% as overweight, totaling approximately 532 million individuals, with nearly 100 million being obese [2] - By 2030, projections indicate that the number of overweight adults in China will reach 540 million, and the obese population will increase to 150 million, representing growth of 2.8 times and 7.5 times since 2000, respectively [2] - By 2035, it is estimated that one-quarter of the global population will be classified as obese, up from 14% in 2020 [2] Group 2: GLP-1 Drug Usage and Compliance - The introduction of GLP-1 drugs like semaglutide has transformed the weight loss market, although many users discontinue the medication after a period [3][5] - A study published in the journal "Obesity" found that 44% of patients remained on weight loss medication after three months, 33% after six months, and only 19% after one year [5] - For semaglutide users, the retention rates were higher, with 63% after three months, 56% after six months, and 40% after one year [5] Group 3: Effects of Discontinuation - A clinical trial indicated that participants who used semaglutide for 20 weeks lost an average of 10.6% of their body weight, but those who switched to a placebo regained an average of 6.9% of their weight [6] - Participants who continued semaglutide and lifestyle interventions maintained an average weight loss of 17.3% over 68 weeks, while those who stopped regained about two-thirds of their lost weight within a year [6] Group 4: Reasons for Discontinuation - Common side effects of GLP-1RA drugs include nausea, diarrhea, vomiting, constipation, abdominal pain, and gastroesophageal reflux, which may lead to discontinuation [8] - Approximately 17% of patients reported nausea even at low doses of semaglutide, with diarrhea and vomiting rates at 12.2% and 6.4%, respectively [8] - Drug supply issues have also been a concern since 2022, leading to shortages of semaglutide [9] Group 5: Recommendations for Discontinuation - It is advised to gradually reduce the dosage of GLP-1 drugs rather than stopping abruptly to mitigate increased hunger sensations [12][14] - Patients should monitor their appetite and weight closely after discontinuation, and if weight begins to increase, they may consider resuming medication at a lower dose [14] - Maintaining healthy eating habits and regular exercise is crucial to prevent weight regain after stopping medication [14][15] Group 6: Importance of Continued Medication - Long-term management of obesity is essential, as it is considered a chronic disease, similar to hypertension or heart disease [19] - In the STEP 5 trial, participants using semaglutide for two years lost an average of 15.2% of their body weight, with 77.1% of patients achieving at least a 5% weight loss [19] - The SELECT trial showed that patients who continued semaglutide for four years maintained an average weight loss of about 10% without rebound [19]