Now-a-days a new way of life comprising of yogasana, pranayama, meditation and changed food habits is expected to lead a happy purposeful life with heightened consciousness and perceptiveness. One such yoga camp is Siddha Samadhi Yoga (SSY) camp which is believed to invoke the intellectual, emotional, mental and physical potential in each individual. These yoga camps claim to have the powers of reversing the ill effects of degenerative diseases. In view of the beneficial effects of Yoga, Meditation and changed food habits the effect of Siddha Samadhi Yoga (SSY) camp’s on normal and diabetic subjects was planned. Materials & methods: Thirty normal and thirty diabetic male subjects free from additional complications belonging to twenty five to forty five years of age were selected from two camps conducted in Mahaboob Nagar and Tirupathi. The BMI of all subjects was assessed. Blood samples were analysed for post prandial blood glucose; serum cholesterol; serum iron and haemoglobin levels. Diet Survey was conducted on the basis of food intake record provided by the subjects. The food habits of normal and diabetic subjects before and after the SSY camp of 18 days was also studied. Results & discussion: There was a significant difference in pre and post prandial blood glucose level of Normal subjects (t = 4.9811 > 2.05) and Diabetics (t = 24.4962 > 2.05). The percent reduction in BMI is 4.2 and 4.1 in normal and diabetic subjects respectively. Serum cholesterol levels among diabetics reduced by 4.1% and by 2.99% in normal subjects. Serum Iron and haemoglobin levels improved in normal subjects by 8.4% and 14.95% respectively in normal subjects while by 5% and 6.9% respectively in diabetics. Summary & conclusion: The SSY camp has a significant effect in decreasing the post-prandial blood glucose and serum cholesterol levels, intake of calories, carbohydrates, cholesterol, fat and significant increase in the intake of fibre, vitamin C, iron and B-carotene.