From article by Maria Cohut in Medical News Today:
“There are a number of good reasons that touching, hugging, and kissing the people we love feels comforting and reassuring.”
“When we touch, hug, or kiss a friend or partner, that gesture is loaded with meaning.
We seek affection, try to establish a connection, or attempt to communicate a need.
Various cultures use touch in various ways to display tenderness or respect, and other non-human primates use it to create a connection and establish social hierarchies.
Recently, however, some experts have expressed concern that Western societies are experiencing a moment of crisis, as physical touch becomes more strictly regulated and we are less and less likely to engage in social acts such as hugging. …”
Read more here.