This book contains information on plant-based nutrients and phytochemicals in vegetable crops that are commonly consumed. The information generated by researchers using modern methods of biochemical analysis and, results mostly validated using cell line cultures or animal models, and to a limited extent on human volunteers have been presented.The vegetable crops have been grouped based on the family they belong to, because most often members of same family have similar biomolecules as active ingredients and have similar effects on health.The book will help the students/ researchers/ scientists and common man alike to look at the vegetables as protective foods not just because it is said so, but with a scientific explanation.