A method of assisting daily living for an individual, comprising the steps of measuring a presence and/or concentration of one or more measuring a presence or biomarkers in a sample from the individual； predicting a behavior or emotional state of the individual based on the measured presence and/or concentration of the one or more biomarkers by applying a correlation between human biological phenotype and human behavioral and/or emotional phenotype； and altering the living environment of the individual or providing information, advice or guidance to the individual based on the predicted behavior or emotional state of the individual, where the correlation between human biological phenotype and human behavioral and/or emotional phenotype comprises a correlation between the one or more biomarkers and a behavior or emotional state. A system for assisting daily living for an individual is also provided. The present invention is useful for product and service providers and industries for purposes of standardizing or rating product quality and efficacy, and/or for promotion and selling purposes.
