MasterChef's George Calombaris has banned his four-year-old son James from eating at fast food chain McDonald's.

In an interview with News Corp the famed Greek Australian chef says he sends his son to kids' birthday parties hosted at the American franchise with a healthy packed lunch.

Likening his zeal for healthy food to how a Buddhist might feel about religion, Calombaris says: 'I look at food like my religion and I have my beliefs in food.

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'I look at food like my religion' MasterChef Australia's George Calombaris has banned his four-year-old son from eating at fast food chain McDonald's

'My son knows ... we'll drive past a certain fast food chain and he'll go, "that's bad in there, isn't it, Dad?" and I explain it's not about bad, it's about having choices in life.'

The 36-year-old says he clearly orchestrates healthy lunch boxes for his son to take to school, shunning the easy option of buying pre packaged goods or sugar loaded treats.

Instead, George whips up a balance meal of freshly made sandwich, yoghurt and raspberries and a snack of cornichons.

'My son knows ... we'll drive past a certain fast food chain and he'll go, "that's bad in there, isn't it, Dad?" and I explain it's not about bad, it's about having choices in life,' says the TV chef

Taste test! The father-of-two (pictured on MasterChef Australia) is a firm believer in eating real produce, the importance of which really resonated when his own father's health was called into question

'He has to take one piece of fruit that he shares with his mates and this time it was an orange,' Calombaris told NewsCorp in the interview.

The father-of-two, he also has a daughter Michaela, is a firm believer in eating real produce, the importance of which really resonated when his own father's health was called into question.

George's dad was diagnosed with bowel cancer twice, when he was six-years-old and 16, but survived both incidents.

Fitspo! The TV star gave his own life a much needed overhaul in 2013 when he lost a staggering 20 kilos

The chef is now an ambassador for Bowel Cancer Australia and maintains the healthiest lifestyle possible, while still enjoying himself.

The TV star gave his own life a much needed overhaul in 2013 when he lost a staggering 20 kilos.

In 2013 he told the Sydney Morning Herald of his new look, slimline physique, saying, 'I stopped grabbing whatever was in front of me and shoving it down my throat.'

He's managed to keep the weight off since by choosing to put a halt to his late night, after work eating binges and keeping up a dedicated exercise regime.

A glance at his Instagram reveals the pocket sized culinary god takes working out seriously and often sweats it out in gym sessions.