A physiologically functional food having brain function-improving, learning ability-enhancing and memory-enhancing functions, which comprises as an active ingredient a lactic acid bacterium fermented milk, a lactic acid bacterium and yeast co-fermented milk, or a treated product thereof, or a mixture thereof, optionally also including a pharmaceutically or nutritionally acceptable carrier or diluent.
Use of a physiologically functional food for improving and/or enhancing brain function, learning ability and memory functions