FASTEST s.r.l. (2007) has developed an innovative and cost effective methodology for the collection and analysis of the fatty acid composition of the blood. The FAsTEST method is simple, fast and cheap. The key advantages can be summarized in: low cost of analysis, skills and competence of the team in performing analysis, interpreting data and evaluating nutritional and biological aspects related to the reference levels assessed by large population studies. FASTEST team has also designed a kit that allows test collection, transportation and storage of samples at room temperature. Fatty acids are the major dietary components responsible for the health status, more than carbohydrates and proteins. Intakes of inadequate Polyunsaturated Fatty Acids (FA), especially of the Omega 3 Fatty Acids, may affect endogenous levels and consequently may lead to metabolic dysfunctions and pathological conditions, such as arteriosclerosis, cardiovascular diseases, metabolic and hormonal alterations, mood disorders, altered immune responses, cancers. FASTEST performs: fatty acids analysis, manage and carries out studies and interventions in the field of nutrition, functional foods and supplements, and observational studies in populations leads to the correlation between diet, lifestyle and circulating fatty acids. The analysis is not invasive and allows the assessment of indicators of the health status of the individual modulated by the diet. The outcome of the analysis identifies natural foods capable of restoring optimal health for the prevention of serious diseases.