The former TV star said: 'I've have put on about a kilo (2.2lbs) a week, 48 kilos. I'm huge.’
'It’s really serious because I am eating myself to death'
Ajay’s rapid weight gain is down to daily trips to fast food restaurants.
She admitted: 'To be really blunt I can eat a whole heap of crap in one day.
‘I’m laughing about it. But it’s really serious because I am eating myself to death.'
The former Biggest Loser host, who now lives in America, said that her house is full of beautiful clothes that she can no longer wear.
'If you open my cupboard you would go, "Well she must be the cleaner that big fat thing, and where is the skinny girl who lives here?" Because I live in sweatpants.’
'I came home and I tried on my skinny jeans and I was still too fat for my skinny jeans.'
The 44 year-old’s weight has yo-yoed over the years and she made an effort to slim down on Australian celebrity diet show Excess Baggage last year.
‘You know the saddest thing was, when I got home from Excess Baggage I thought; "Oh yeah I did alright, I won, I lost a bit of weight."’
'I came home and I tried on my skinny jeans and I was still too fat for my skinny jeans.'
The former TV star’s battle with her size is not surprising considering the issues she has faced in her personal life.
Ajay was estranged from her adoptive mother who physically abused her as a child, and her birth mother committed suicide when Ajay was 22 – a year after the pair had reunited.
The single mother also has a 13-year-old son Kai, who has been diagnosed with Aspergers syndrome.