The values of vegetarianism have been extolled for long. In general, it has been suggested that vegetarians (if they are able to take care of their protein intake) are likely to lead healthier lives.
Well, this was too good to last. A study that compared populations in Pune, India and Kansas, USA found that the predominantly vegetarian Pune-ites were more likely to develop mutations that increased the production of pro-inflammatory arachidonic acid, which might increase inflammatory disease and cancer risk.
It needs to be said that the researchers did not show an actual increase in any of these disease, so this may all turn out be just a storm in teacup.