All the 40 chapters of the first edition have been retained after thorough revision and updating. Some portions of the nutrition syllabus have been separated and added to the biochemistry section to make the presentation more logical, systematic and student-friendly. The question bank has been thoroughly overhauled by deleting the questions from the previous syllabi and by including al the latest question papers. MCQ’s have been provided at the end of each chapter to enable the students to self-check their assimilation. Finally, this is not just another textbook. It is the experience of teaching the subject for the last half-century and more!