A minister for loneliness, a project first started by the late MP Jo Cox, has been announced by Downing Street.
Tracey Crouch MP said she was proud to take on the "generational challenge" to tackle an issue affecting about nine million UK people, young and old.
She said she would work across political parties and with communities.
The Commission on Loneliness was first set up by Ms Cox, who was killed before the EU referendum by a man who shouted "Britain first" during the attack.
A 2017 report said loneliness was as harmful to health as smoking 15 cigarettes a day.