She has also recently spoken out about her view on telling women they have lost weight. According to the 55-year-old, it should not be seen as a compliment.
In an interview on Ireland's The Late Late Show, Nigella said: "What is important is that you are healthy and embracing life.
"If you are naturally thin that's fantastic - but if you have to starve yourself, it is not good."
She revealed it wasn't until after her mother had died from cancer in 1985 that she worked out she had an eating disorder.
"I knew she had a thing about thinness but I worked out later... when she was dying she allowed herself to eat.
"To wait until you have a terminal disease to enjoy eating is awful."
Lawson's idea of eating well comes down to balance.
"There are times when you need a slice of cake," she said.
"I don't eat it every day but life has to be balanced and not too restricted. You have to savour the good things."
READ MORE: HOW CLEAN EATING CAN MAKE YOU SICK
- nzherald.co.nz