Dutch and Canadian study looked at 1,000 men and women . Meals made the person they were with 'warmer ' and 'more 'likeable ' Chewing raises the levels of 'feel-good ' chemical serotonin .
Dutch and Canadian study looked at 100 men and women . Meals made the person they were with 'warmer ' and 'more 'likeable ' Chewing raises the levels of 'feel-good ' chemical serotonin .