He conceded the wet weather last summer may have been a factor in the reductionof anti-social behaviour, but added figures for the three months from 28 March also showed a drop from 29 incidents in 2011 to 17 in 2012.
This may be a factor in the reduction in the number of overall improvised explosive device attacks in recent months, which, as this chart shows, has declined sharply by about one third since June.
Dr Shulman added that the reduction could be a contributing factor to the development of insulin resistance and Type 2 diabetes because of its effect on fat burning and mitochondria production.