A food distinguishing apparatus for each individual's healthy diet is disclosed. Because handgrip strength was reported to be one of the best future health predictors, having a good hand-grip strength could be a way to be healthy. The inventor has focused on a phenomenon of hand-grip strength changing by touching food. Touching good food immediately increases the muscle strength. The reactions with food vary on each individual. The invented apparatus measures the pressure variation of two clenched fingers' pinch-grip strength without touching food and with touching food under exerting pushing out force from an expandable container and distinguishes good food and bad food for each user.
