What is relative burden of psychological illness vs physical illness?

• deaths from suicide, depression etc vs deaths from wars … (statistic gets quoted)
• suffering from loneliness vs hunger

WHO report in 2014 stated http://www.who.int/mediacentre/news/releases/2014/suicide-prevention-report/en/. Quoted

The World Health Organization reports more than 800,000 people die by suicide every year. WHO, which is launching its first global report on suicide prevention, said more people die from suicide than from conflicts, wars and natural disasters combined.

p.31 of summary http://apps.who.int/iris/bitstream/10665/131056/8/9789241564878_eng.pdf

Another method of assessing the importance of suicide as a public health problem is to assess its relative contribution to all intentional deaths, which include deaths from interpersonal violence, armed conflict and suicide (i.e. violent deaths). Figure 6 shows the proportion of all violent deaths that are due to suicide in different regions of the world. Globally, suicides account for 56% of all violent deaths (50% in men and 71% in women). In high-income countries suicide accounts for 81% of violent deaths in both men and women, while in LMICs 44% of violent deaths in men and 70% of violent deaths in women are due to suicide.

Note: i have spent a while trying to substantiate these numbers but it has been a bit painful. I've still not found data on fatalities from war and natural disasters.

Main WHO page is here: http://www.who.int/mental_health/prevention/suicide/suicideprevent/en/ - all single stats i found had prevalence rates.