Exercise is twice as effective at treating depression as antidepressants, a study has suggested. Walking or jogging at least two to three times a week was considered the best way to improve symptoms of depression, researchers revealed. Experts analysed 14,170 people with major depression disorder from 218 separate trials and ranked different forms of exercise by how effective they were at treating the condition compared with existing treatments. While all forms of intervention were effective to some degree, taking antidepressants known as selective serotonin reuptake inhibitors (SSRIs) – the most commonly prescribed type – on their own was less effective...