Dietary Modification Patterns and Interventions Among Weight Loss Seekers in Tamilnadu, South India: A Cross-Sectional Analysis of Intermittent Fasting and Alternative Dietary Approaches

Background The escalating global obesity epidemic requires comprehensive investigations for effective weight management strategies. Understanding the patterns, barriers, and facilitators of dietary interventions is crucial for developing effective weight management protocols. This research aims to assess dietary modification interventions among weight loss subjects in Tamilnadu, South India. Specific objectives included evaluating various weight loss interventions, analyzing dietary patterns adopted by subjects, and examining characteristics, barriers, and facilitators associated with specific dietary modification approaches. Methodology A cross-sectional study was conducted among 432 participants from Tamilnadu, South India. The research employed a comprehensive data collection approach, gathering information on demographic characteristics, anthropometric measurements, dietary modification patterns, and intervention outcomes. Participants were categorized based on their chosen dietary interventions, particularly distinguishing between intermittent fasting and alternative dietary approaches. The study systematically evaluated various parameters, including regular adherence, physiological effects, psychological impacts, and barriers to maintenance. Statistical analysis utilized chi-square and Fischer's exact tests for categorical variables, while independent t-tests were employed for continuous variables. Results This study encompassed 432 participants, with demographically diverse participants characterized by a predominance of urban residents (295, 68.3%), highly educated individuals (383, 88.6%), and students (190, 44%). The mean age was 27.93 years, with a mean body mass index of 25.21 kg/m². Regarding dietary intervention objectives, the study revealed that 289 (66.9%) were not engaged in any healthcare intervention, while 102 (23.6%) pursued intermittent fasting and 41 (9.5%) adopted alternative dietary strategies such as Paleo and ketogenic diets. Among participants implementing dietary modifications, the mean intervention duration was 5.21 months, ranging from half a month to 60 months. Intermittent fasting participants exhibited statistically significant characteristics, including a younger mean age (27.09 years) compared with alternative diet groups (37.37 years). Notably, 73 (71.6%) reported significant weight loss, with 69 (67.6%) experiencing weight regain during non-adherence. Psychological and physiological benefits were prominently observed, with 73 (71.6%) reporting mood improvements, 71 (69.6%) experiencing enhanced concentration, and 72 (70.6%) noting improved bowel habits. Barriers to dietary modifications included timing challenges (50, 49%), family mealtime conflicts (43, 42.2%), and work schedule interruptions (39, 38.2%). Conclusion The research provides comprehensive insights into dietary modification patterns among young Indian adults, highlighting intermittent fasting's potential as an effective weight management strategy. The findings underscore the complex interplay between dietary choices, individual characteristics, and holistic health outcomes. While demonstrating promising weight loss and cognitive benefits, the study emphasizes the necessity of personalized, context-sensitive nutritional interventions. These insights contribute significantly to understanding dietary modification dynamics and inform the development of more effective, tailored weight management strategies.