Background and Objectives: Overweight and obesity are not only the biggest problem among the middle-aged but also among children, teenagers and young adults. Early detection of the factors causing obesity, in turn, helps in the prevention of its complications. The objectives of the study were to assess the various lifestyle practices among medical students and to correlate the relationship between the nutritional status and biochemical parameters.
 Methods: A cross-sectional - study was conducted on MBBS students studying at Mandya Institute of Medical Sciences (MIMS), Mandya, Karnataka, India. Self-administered questionnaires were given to the students followed by the recording of their anthropometric measurements. Nutritional status was assessed using the Body Mass Index (BMI). Fasting blood sample was collected from the student and analysed the biochemical parameters.
 Results: Out of 325 students, 48.9% were male students and 51.1% were female students. It was found that a higher percentage of female students (53%) was on a balanced diet as compared to male students (47.2%). The daily consumption of fruits and vegetables were less amongst students of both genders. Mean values of Fasting Blood Sugar (FBS), Total Cholesterol (TC), Triglyceride (TG) and Low-Density Lipoprotein (LDL-C) were higher among male students as compared to female students. Mean values of few biochemical parameters like FBS, TC, TG and LDL-C were higher amongst obese students along with a corresponding decrease in High-Density Lipoprotein (HDL-C).
 Conclusion: Our study showed that unhealthy dietary and lifestyle practices were associated with increased levels of various biochemical parameters and it was more common amongst male students. Increased biochemical parameters like FBS, TC, TG and LDL-C with the corresponding decrease in HDL-C is an alarming sign for increased risk of developing cardiovascular disease among the younger age group.