Read the text again and fill in each gap with a suitable word.

Loneliness is a complex emotional state that can be triggered by several (a) ______ . Experts suggest that while anyone can be affected, some groups are more (b) _____ than others. Major life changes, such as moving to a new country or (c) ______, are common catalysts. For the elderly, the loss of a social network and physical (d) ______ can intensify feelings of isolation. It is crucial to understand that loneliness is not a personal failure but often a natural (e) _______ to difficult circumstances.