So how did she do it? Here Nadia shares a typical day's diet from before she lost the weight and compares it with what she eats now. Could you make any similar adjustments to your diet?
Cup of tea
Two boiled eggs, with granary toast and a piece of fruit
Two rounds of sandwiches, crisps and chocolate
Houmous and tabbouleh with brown pitta bread
Big plate of pasta with cheese sauce
Three squares of dark chocolate.
Nadia Sawalah's Fat To Fab Workout, £19.99, is out now.
Where to next?