The elderly get lonely because as they age they lose their work, their spouses and so on.
(because) as people get older they lose their work, their husbands or wives and their friends.
「高齢になるにつれて仕事や配偶者などが失われてしまうから」＝ The elderly get lonely because as they age they lose their work, their spouses and so on. / (because) as people get older they lose their work, their husbands or wives and their friends.
ボキャブラリー
the elderly ＝ 高齢者
lonely ＝ 寂しい、孤独を感じる
age, get older ＝ 年を取る、高齢になる
lose ＝ 失う
work ＝ 仕事
spouse, husband or wife ＝ 配偶者
friend ＝ 友達
イギリス 
