Alison Hammond's diet and fitness secrets revealed after 11-stone weight loss

She first shot to fame on Big Brother in 2002 and has remained a familiar face on television ever since.And in the last five years, Alison Hammond has dramatically reshaped her lifestyle by shedding around 11 stone.At her heaviest, the star weighed 30 stone before a pre-diabetic health warning pushed her to pursue a healthier lifestyle. The This Morning presenter, 519, decided to lose weight after the death of her mum - who had raised concerns over Alison's pre-diabetic diagnosis. She has previously insisted that her remarkable transformation did not involve any strict dieting and that she instead focused on moderation and sustainable habits.Now, personal trainer Lui Mancini has revealed more about her fitness routine that helped power her impressive transformation.