"You could be harming people's health by saying eat no meat. Where are you going to get your vitamins from?" Farmer Sam Chesney on Veganism. Could you go Vegan for January?

Could you ever be a vegan? NO Sunday roast beef, NO fish supper and NO cream buns.  

This month sees the Veganuary campaign, which encourages people to try a vegan diet during January. 

But how much good will giving up meat, fish, dairy, eggs and honey for 31 days do? 

And what about beef, dairy and poultry farmers?  

Three of the biggest agri-food industries in Northern Ireland?