Nutraceuticals are dietary supplements, utilized to ameliorate health, delay senescence, prevent diseases, and support the proper functioning of the human body. Currently, nutraceuticals are gaining substantial attention due to nutrition and therapeutic potentials. Based on their sources, they are categorized as dietary supplements and herbal bioactive compounds. The global market for nutraceutical is huge i.e. approximately USD 117 billion. Herbal nutraceutical helps in maintaining health and promoting optimal health, longevity, and quality of life. Studies have shown promising results of nutraceuticals to treat several diseases, such as cancer, neurodegenerative diseases, cardiovascular diseases, etc. In the present review, an overview of various bioactive ingredients that act as nutraceuticals (carbohydrates, lipids, edible flowers, alkaloids, medicinal plants, etc.) and their role in health benefits, has been discussed. Further application of nutraceuticals in the prevention of various diseases has also been discussed.

营养食品是膳食补充剂，可用于改善健康状况，延缓衰老，预防疾病并支持人体的正常功能。目前，由于营养和治疗潜力，保健食品受到了广泛关注。根据它们的来源，它们被分类为膳食补充剂和草药生物活性化合物。全球营养保健品市场巨大，大约为1,170亿美元。草药保健品有助于维持健康并促进最佳健康，长寿和生活质量。研究表明，营养保健品可治疗多种疾病，例如癌症，神经退行性疾病，心血管疾病等，前景看好。在本综述中，概述了各种充当营养保健品的生物活性成分（碳水化合物，脂质，食用花卉，生物碱，已经讨论了药用植物等）及其在健康中的作用。还讨论了保健食品在预防各种疾病中的进一步应用。