Nutrition a plays pivotal role in both foetal development and maternal well-being, with malnutrition posing risks, including psychometric morbidity. Addressing both nutritional and psychological factors is crucial for optimal maternal and infant health. This research aims to understand the interplay and impact of these factors during and after pregnancy. Aim: The study aims to evaluate and compare nutritional status, psychometric morbidity, and quality of life during gestation and the perinatal period. Settings and Design: Conducted at the Obstetrics and Gynaecology ward at Erode Tertiary Care Hospital, the study is structured as a cross-sectional investigation. Methods and Material: The study involved 365 participants meeting inclusion criteria, excluding those with a history of mental health issues. Comprehensive data collection included information on nutritional and lifestyle habits, psychological well-being, pregnancy-related experiences, and demographics. Statistical analysis used: Statistical analysis used SPSS Version 27, employing Spearman's rho and the Chi-Square test. Results: Among 365 perinatal women, the 21-25 age group (52.7%) showed a significant impact of psychological challenges and poor nutritional intake among young adults. Findings revealed a highly significant relationship between poor psychological status and inadequate nutritional intake (Spearman's rho = 0.388). A significant association (<0.001) was found between poor psychological status, inadequate nutritional intake, and adverse perinatal outcomes. Conclusions: The study stresses addressing mental well-being and nutrition in perinatal care, linking poor psychological health to obstetric complications, underscoring the role of nutrition, and advocating holistic support via positive lifestyle habits for pregnant women.