The number of people who suffer from dementia is set to triple to more than 150 million by 2050, the World Health Organization (WHO) said on Thursday.

Dementia causes a wide range of symptoms including memory loss and a decline in mental abilities.

In a bid to help the global community to prepare for the growing challenge, WHO has called on governments to pool data on the disease for the first time.

To date, the Global Dementia Observatory covers 21 countries, but more than 50 are expected to be involved by the end of next year, WHO’s Dr Tarun Dua told Daniel Johnson.

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