New scientific research, published in the journal ‘PLOS ONE’, has discovered that feeling hungry really can make us ‘hangry’, with emotions like anger and irritability strongly linked with hunger. The study, the first to investigate how hunger affects people’s emotions on a day-to-day level, found that hunger increased irritability by 37%, anger by 34% and in displeasure by 38%. The research also found that the negative emotions are caused by both day-to-day fluctuations in hunger, as well as residual levels of hunger over the three-week period. Researchers say that greater awareness of being ‘hangry’ could reduce the likelihood of hunger resulting in negative emotions and behaviours in people.