One can avoid a lot of problems if he/she doesn't eat meat.
Eating meat: links to chronic disease might be related to amino acids – new findings
Meat-rich diets are linked to a range of health problems, from heart disease and strokes to type two diabetes and some cancers. People who eat diets high in meat have also been found to live shorter lives.
As soon as food is mentioned there's always a 'warrior' vegetarian telling us how we should eat. I think along with politics and religion being banned from discussion, vegetarianism should also be banned from being preached at us.