A new study published by the America Journal of Medicine claims to show a link between cannibus use and lower "fasting insulin" levels, which could mean a lesser likelihood of developing diabetes and obesity in general.
Here's a link to the article, which unfortunately is in PDF format.
Let's not be too hasty, as cannibus has only recently been available for study and we can expect a lot of new data in the years ahead. But with treatments for cancer at least having anecdotal success, the unintended consequences might be in our favor for once.
The intended consequences, namely ending The Prohibition, are still to be remedied...