vitamins to improve criminals' behaviour?

I'm all for measures that improve society and rehabilitate criminals and if diet helps that's nice. Of course there are those who may dislike this:
"the approach is likely to be attacked by right-wing critics as allowing offenders to escape responsibility for their own crimes by blaming their diets."
But I think that the best that this will do is demonstrate that some people are not helped in their ability to make good choices by being poorly fed. I suspect that the situation would be like drinking alcohol; it has a deleterious effect on rationality and decision-making skills but there is still a degree of responsibility at two levels at least. One is the responsible to act to the best of ones ability even if capability is diminished -diminished is not the same as 'obliterated'. Another is that there may be a prior decision also; in other words, bad dietary choices are in effect choices to behave less well which would be somewhat analogous to drunk-driving issues, I suspect.
The Observer | UK News | Criminals to be fed vitamins to improve behaviour: