Functional Foods and Their Impact on Human Health: A Review

Functional foods are emerging as a topic of interest for nutrition, health promotion and disease prevention. In this article, we discussed the concept, types, bioactive components, mode of action, regulation, and health benefits of functional foods. Functional foods are natural and fortified foods with bioactive compounds like polyphenols, probiotics, dietary fiber, phytosterols and omega-3 fatty acids that improve bodily functions. The study examined different types of functional foods, such as natural, fortified and medical foods, as well as examples including functional foods containing probiotics, dietary fibers and plant-based functional foods. It also discussed the effects of these bioactive ingredients on metabolism, immune system, gut microbiome, and inflammation regulation via multiple mechanisms. Functional foods were found to have many health-related benefits, including promoting heart health, preventing or managing diabetes and obesity, and promoting gut health, immunity, cognitive health and psychological well-being. It also highlighted the importance of regulations for the safety, quality and efficacy of functional foods. Finally, the study suggested that functional foods are indeed a vital component of preventive health care and therapeutic nutrition and have a strong potential to improve health and prevent lifestyle diseases, but also that more research and regulatory efforts are needed in this field.