It is important to remember that feeling lonely is an emotion that it is quite normal to feel from time to time during life. Even people who are seemingly popular and who have the support of others can feel lonely during their life even though they are not alone. Of course, feeling lonely is most often associated with social isolation. Cutting yourself off from others intentionally for a while can make you appreciate just how much you enjoy the social interactions of daily life. If it is something that goes on for too long, however, then it can lead to chronic loneliness, which, in turn, may have undesirable effects on the brain and people's wider mental health.
In order to combat social isolation, people around the world do lots of things. Joining clubs and volunteering
groups is a great way of feeling less lonely, especially when the activities involved mean interacting with new acquaintances. Some people will look after a pet so that they feel less lonely. Just walking a dog is a great way of getting out and about and bumping into other people, for example. These days, technology also provides numerous ways of getting in touch with others in often much more meaningful ways than could have been possible even a few decades ago. That said, being lonely is something that many people report in modern life and – although it doesn't much fit the stereotype – it is younger adults who appear to be worst off in this regard. Therefore, many governments around the world now take having an increasingly lonely population more seriously than ever before as an issue of public health.