A healthy man is defined as one who indulges daily in healthy diet and lifestyle activities, who discriminates between wholesome and unwholesome and acts accordingly, who is not too attached to the worldly affairs, who develops the habit of charity, considering all as equal, is truthful, pardoning, and keeps company with good persons becomes free from diseases. Ayurveda has long placed a strong emphasis on the role that diet and lifestyle play in maintaining health. Diabetes mellitus is major health problem in 21st century in year 2000 India is one of the five countries which have highest sufferers of diabetes mellitus, hence India is declared as capital of diabetes now. In spite of advanced medical research, it is still burning issue that 50% of diabetic patient are remaining undiagnosed. World Health Organization (WHO) intended that India have 35 million diabetic populations, which will be 57.2 million by year 2025 & 79.4 million by the year 2030. As of 2000, diabetes mellitus is a significant health issue in the twenty-first century. India is currently referred to as the capital of diabetes since it is one of the five nations with the greatest rates of diabetes mellitus. The fact that 50% of patients with diabetes go undetected remains a serious concern, despite significant advancements in medical science. The World Health Organization (WHO) projected that 35 million people in India had diabetes; by 2025, that number would rise to 57.2 million, and by 2030, it will reach 79.4 million. Reviewing Ayurveda is necessary in order to put preventative measures in place for the impending epidemic of lifestyle problems, which can be avoided with dietary (ahara), lifestyle, and environmental adjustments. One of the oldest medical sciences, ayurveda effectively explains numerous methods for managing and preventing lifestyle problems through its holistic approach.