Together we can tackle loneliness One in four adults feel lonely some or all of the time. There’s no single cause and there’s no one solution. After all, we’re all different! But, the longer we feel lonely, the more we are at risk of mental health problems. Some people are also at higher risk of feeling lonely than others. For Mental Health Awareness Week this year, we're raising awareness of the impact of loneliness on our mental health and the practical steps we can take to address it.