Nutraceuticals have attracted a considerable amount of attention due to its potential nutritional and therapeutic effects. They can have an effect on many biological processes, therefore nutraceuticals may be used to improve health, prevent chronic diseases, postpone the aging process (and in turn increase life expectancy), or just support functions and integrity of the body. They are considered to be healthy sources for prevention of life threatening diseases such as diabetes, renal and gastrointestinal disorders, as well as different infections.
A wide range of nutraceuticals have been shown to play crucial roles in the immune system and its susceptibility to certain disease states. They also have been shown to have positive effects on issues related to oxidative stress including allergy, Alzheimer's disease, cardiovascular diseases, cancer, eye conditions, Parkinson's diseases and obesity.