A Comperihensive Analysis of Nutraceuticals Indicating Their Sources and Therapeutical Applications

Nutraceuticals are products that, beyond supplying basic nutrition, also exert medicinal effects. A nutraceutical may be defined as a substance that offers physiological benefits or provides protection against chronic illnesses. These products are increasingly used to enhance overall health, slow the aging process, prevent chronic diseases, extend life expectancy, and support structural or functional integrity of the body. In recent years, nutraceuticals have attracted considerable attention due to their nutritional value, safety profile, and therapeutic potential. Numerous studies have reported encouraging outcomes for these compounds in a wide range of medical conditions. This review focuses on emerging concepts related to nutraceuticals, emphasizing their disease-modifying roles. Special attention is given to herbal nutraceuticals that demonstrate potential benefits in difficult-to-treat disorders associated with oxidative stress, including allergy, Alzheimer’s disease, cardiovascular disorders, cancer, diabetes, ocular conditions, immune dysfunction, inflammatory diseases, Parkinson’s disease, and obesity. Relevant literature was identified using scientific databases such as Medline, PubMed, and Google Scholar. Search terms included “nutraceutical” in combination with allergy, Alzheimer, cardiovascular disease, cancer, diabetes, eye disorders, immune disorders, inflammatory conditions, or Parkinson’s disease.