Will global warming make people mentally ill?

People have a shorter fuse when it's hot and humid and they're not used to it.

In a recent UK mental health policy consultation there was a whole bit about the potential effects of climate change on the nation's mental health. I have to admit I had a bit of a giggle but upon reflection now I wonder if it's something worth considering.

A quick google later
http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=temperature+psychiatric

and a there's a study that shows admissions to psychiatric wards go up.
http://www.annals-general-psychiatry.com/content/7/S1/S201

The results are somewhat bizarre.
"
Temperature was strongly positively correlated with the number of overall psychiatric admissions (r=0.475, p<0.01), admissions for schizophrenia and other psychoses (r=0.360, p<0.01) and with male gender of admitted psychiatric inpatients (r=0.416, p<0.01). A positive correlation was noted between temperature and the number of involuntary admissions (r=0.302, p<0.05), whereas the correlation between temperature and the number of inpatients admitted because of mood disorders was of marginal statistical significance (r=0.260, p=0.05). Rainfall was negatively correlated with overall psychiatric admissions (r=−0.306, p<0.05). Further negative correlations of rainfall were also found with the number of patients admitted for organic brain syndrome (r=−0.373, p<0.01) and involuntary admissions (r=−0.425, p<0.01).
"

Interestingly it's psychoses that see the effect whereas mood disorders don't. The results for rainfall and admissions is explained by the authors as related to increased difficulty or inconvenience in accessing healthcare in the rain being the reason for the reduce number of admissions.

So, the recent BP oil spill is going to cause psychiatric hospitalisation....