Abstract: This invention relates to a microcomputer and method for selecting foodstuffs from a foodstuff database, nutrients from a nutrient database, minerals from a mineral database, vitamins from a vitamin database and physical activities from a physical activity database, maintaining a record of the foodstuffs, nutrients, minerals and vitamins eaten and the physical activities exercised, and by computational means to analyze the selected and recorded foodstuff, nutrient, mineral and vitamin nutritional data along with the selected and recorded physical activities exercised to compare the user's daily dietary and physical activities to the user's RDA (recommended dietary allowance).