Last week The Observer newspaper warned that eating processed, sugary, foods could lead to depression. The December edition of Zest magazine has a similar story on its cover: 'Boost your mood now with 60 feel-happy foods', in which is exhorts its model-wannabe readers to eat more fruit and vegetables.
So, if they're right, the NHS spends millions each year treating people for depression brought on by junk food sold, at a profit, with adverts promising a happier, more relaxed, lifestyle, to anyone who succumbs to temptation.
I think the polluter pays principle should mean food retailers stump up cash to society - in the form of increased taxation - to compensate the NHS for having to nurse their customers back to health when it all goes wrong.
If that means junk food prices go up, but healthier food prices come down, so total food bills don't rise (hard to work out but that's no reason not to try), there'll be probably be a fall in the high numbers of Brighton residents suffering from depression.
Of course, Labour's friends in big business won't like it much, so don't expect any Government action on junk food anytime soon - but Green MPs will keep the issue on the agenda, whoever forms the next government.