36 year old Andrew Taylor, from Melbourne, has vowed to eat only potatoes for the entirety of 2016, and has already lost 10kg in a month, it has been reported.
The diet includes sweet potatoes too, as well as some seasoning, and he began the diet on 1 January, when he weighed 23st 12lbs.
Mr Taylor has said he boils, bakes and steams the potatoes, in order to increase the variety of recipes, and has even tried out potato pancakes. He claimed that 99 per cent of his calories now come from potatoes.
However, nutritionists have warned that a diet based on just one ingredient, and food group, is not healthy.
“By just eating potatoes for a year he is very unlikely to be getting all of the vitamins and minerals he needs,” Chloe Miles, of the British Dietetic Association.
“He is likely to miss out on iron, which will potentially lead to tiredness and, also, not consume enough calcium which will have an impact on his bone health.”
“It is also going to have an impact on his social life as this is a very restrictive diet, [and] could lead to disordered eating,” she continued.
A varied diet that is rich in fresh fruit and vegetables, and low in processed food and sugar, is the backbone of a healthy diet.