There is an increasing number of people around the world who, despite efforts to promote healthy living, suffer from a lack of exercise, bad habits, and an unbalanced diet. This unhealthy and sedentary lifestyle has many negative effects on the body and can significantly reduce a person's quality of life. The rise in unhealthy lifestyles and their global impact are in the spotlight of the new issue of trendletters, produced as part of a joint project of the Human Capital Multidisciplinary Research Center and the UNESCO Futures Studies Chair (UNESCO Futures Literacy Chairs network).