The World Health Organisation in its new global health estimates on depression for 2015 said while over five crore Indians suffered from depression, over three crore others suffered from anxiety disorders.
The report titled 'Depression and Other Common Mental Disorders - Global Health Estimates' said over two-thirds of global suicides were in low- and middle-income countries like India in 2015.
The WHO document said that 322 million people are living with depression worldwide and nearly half of them live in South East Asian and Western Pacific region, reflecting relatively large populations of India and China.
The total estimated number of people living with depression increased by 18.4 per cent between 2005 and 2015, it said.
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According to WHO figures, the total cases of depressive disorders in 2015 in India were 5,66,75,969 which was 4.5 per cent of population in 2015 while total cases of anxiety disorders were 3,84,250,93 which was 3 per cent of the population in the same year period.
The document noted that in 2015, an estimated 7,88,000 people died due to suicide while many more than this number attempted but did not die.
It said suicide accounted for close to 1.5 per cent of all deaths worldwide, bringing it into the top 20 leading causes of death in 2015.
"Suicide occurs throughout the lifespan and was the second leading cause of death among 15-29 year olds globally in 2015," it said.
middle-income countries in 2015," it said.
India accounted for the highest estimated number of suicides in the world in 2012, according to a WHO report published in 2014 which found that one person commits suicide every 40 seconds globally.
Depression is the leading cause of disability worldwide, and is a major contributor to the overall global burden of disease, WHO said and asserted that more women are affected by depression than men and at its worst, depression can lead to suicide.