New Scientist:We might be living for longer than ever, but we are sick. About 95 per cent of people have at least one health complaint, with a third of us having more than five. Becoming better at avoiding early death means we spend longer being susceptible to diseases and disabilities that result from our bodies wearing out.

The leading causes of loss of healthy years were lower-back pain and depression, which were among the top 10 causes of lost years of health in all 188 countries.

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