I hereby declare that this book contains invited chapters and not autonomous work. All sources and aids used have been indicated as such. All texts, either quoted directly or paraphrased have been indicated by in-text citations. Full bibliographic details are given in the reference list which also contains internet sources containing URL and access date. This work has not been submitted to any other examination authority.

In this current scenario, obesity and diabetes are increasing worldwide as obesity is the condition that results in weight gain by increasing excessive body weight which is associated with many factors such as genetic factors, socioeconomic status, sedentary lifestyle and more inclusion of processed foods in the diet. So, there are various ways to prevent obesity and diabetes as physical exercise, healthy diet, and natural constituent as Flavonoids for developing safe products that are present in plants which is responsible for various properties as an antioxidant, anti-diabetes and also to combat obesity as anthocyanins, flavonols, flavones, flavanones, flavans-3-ol, Isoflavonoid. This chapter summarizes the concept of Flavonoids and sources of Flavonoids for preventing metabolic disorders like obesity and diabetes

The book entitled “Pharmacognosy & Nutrition Volume – 1” was published in 2019. The book included several nutritional topics. Nutrition is a term that appears on the boards of all life sciences. Nutrition is the major difference between living and non-living things. Nutrition is the subject of several disciplines. It links food sciences, biology, microbiology, biotechnology, home sciences, etcetera. All these science streams examine different nutritional issues and seek to understand how nutrition interacts from the cell to molecular levels.

Natural products and functional/medical foods are now widely acknowledged as having an effect on the microbiome of the intestine, which in turn influences the outcome of certain disease. This book reviews the impact and effects of natural products and functional/medical foods (nutritional programming) on disease management, specifically focusing on diseases related to 1) Inflammation and Immunity, 2) Cancer, COPD and Cachexia, 3) Allergy and 4) Brain Neuro/Immune. Hippocrates said "let medicine be thy food and food be thy medicine". While most of us are familiar with Hippocrates famous words, we admit that in recent times, the disciplines of pharma and nutrition have evolved separately. Today, with the ever growing burden of diseases in modern society, we see a convergence of the two in relation to specific disease prevention and treatment. This re-discovered common ground between the complementary values of pharma and nutrition can be conceptualized in the term pharma-nutrition. Various chapters in the book review the aspects of molecular characteristics of food ingredients towards clinical effectiveness and relevance.

This reference provides a comprehensive treatment of the physiological effects of foods and food components capable of promoting good health and preventing or alleviating diseases. It assembles extensive information on the nature and physiological effects of biologically-active components of major plant foods. Internationally renowned specialists discuss how to manufacture and evaluate food products with health enhancing effects, using both traditional and novel processing methods. This comprehensive volume serves the information needs of food scientists and technologists, food process engineers, biochemists, nutritionists, and public health professionals.

A textbook of Pharmacognosy describe the content of crude drugs the study of medicines or crude drugs produced from natural sources such as plants, microbes, and animals. It includes analysis of their biological, chemical, biochemical, and physical properties. of pharmacognosy is "the study of the physical, chemical, biochemical, and biological properties of drugs, drug substances or potential drugs or drug substances of natural origin.