What body function or chemical causes loneliness?

Answer 1

It's possible that boosting the enzyme that helps create allopregnanolone could relieve feelings of loneliness that trigger memory blocks. Or perhaps simply administering allopregnanolone would do it too.

Answer 2

Loneliness can be caused by a variety of factors such as a lack of social interactions, feelings of isolation, or changes in brain chemistry related to social bonding and emotions. Oxytocin, a hormone associated with social bonding, may play a role in feelings of loneliness when its levels are disrupted. However, loneliness is a complex emotional state influenced by psychological, social, and environmental factors as well.