Oliver Callan has launched a scathing attack on Rosanna Davison

The comedian has seriously questioned the expertise of the former Miss World.

Despite various objections to her dietary beliefs, Rosanna Davison's new career as a healthy eating guru has proven to be quite successful. Her book, Eat Yourself Beautiful, topped the Irish charts, but comedian Oliver Callan has hit out at a recent statement she made which encouraged women to stop eating dairy products. Writing in his column with The Irish Sun, Callan questioned Davison's credentials by stating "the fact that a woman with a famous dad, who earns a chunk of her fortune modelling skimpy outfits gets all the foodie headlines says more about us than it does about her." The Monaghan man made things even more personal with this remark, "gurning out from the preposterously girly cover, the irony of someone wearing more makeup than Ronald McDonald spouting about keeping things natural was clearly lost on anyone who bought and read it," he wrote. In his view, Davison is on a witch-hunt against dairy, but the comedian also directed his ire away from the former Miss World. Regarding the people who read Davison's book, Callan says, “Rosanna’s demographic are the sort of people who photograph themselves on Facebook sitting on a pilates ball with an unread Caitlin Moran book in hand. Out of shot is usually a family size bag of Maltesers, a box of white wine and a packet of Kleenex." Davison spent three years studying for a qualification in nutritional therapy, but this isn't the first time that her views have been publicly questioned. You may remember the furore surrounding her views that gluten could be linked to medical conditions such as autism and schizophrenia.