本期内容：

Dogs really are our best friends, according to a Swedish study that says canine ownership could reduce heart disease. A study of 3.4 million people between the ages of 40 and 80 found that having a dog was associated with a 23% reduction in death from heart disease and a 20% lower risk of dying from any cause over the 12 years of the study. Previous studies have suggested dogs relieve social isolation and depression – both linked to an increased risk of heart disease and early death.

according to: 根据
canine: adj. 犬科的
reduce: vt. 减少；缩小
reduction: n. 减少
increase v. 增加；增长
be associated with: 和……相关
relieve: vt. 缓解；解除
isolation: n. 孤独；隔离
isolated: adj. 孤独的；隔离的
depression: n. 沮丧；抑郁症
depressed: adj. 沮丧的；郁闷的
be linked to: 和……相关

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