A man has been jailed after he reportedly forced his girlfriend to exercise endlessly and live only on tuna because he wanted her to have a "huge a** like Kim Kardashian". Mohammed Anwaar, 27, took his celebrity obsession to a dangerous level, taunting Gemma Doherty,30, with pictures of celebrities as he forced her to run on a treadmill for hours on end, in a relentless campaign of physical and mental abuse that lasted over two years.

Ms Doherty described how Anwar made her eat 50 cans of tuna a week, as part of his punishing 'fitness regime', as he demanded that she emulate fitness guru Gracyanne Barbosa. Comparing his girlfriend's physique with pictures of Barbosa, he would force her to do sit-ups, physically assaulting her if she refused.

Speaking about the brutality she endured for two years, Ms Doherty told Sheffield Crown Court: "He treated me like an animal - almost like a guinea pig in a laboratory. He wanted me to have abs and a huge ass - a big one like Kim Kardashian. His favourite model was Gracyanne Barbosa and he would make me look at her fitness routines and practice them. If I didn't, he would beat me.

"He would only let me eat tuna and beetroot. I would see my friends out and they told me to eat more. I was wasting away when I was forced to lose all these calories every day. I felt like a zombie on autopilot and was at his beck and call - whatever and whenever," the mother-of-two added.

Hearing how Anwar had once held a knife to his girlfriend's throat and threatened to kill her while her son hid under the bed, plus taking into account previous convictions he had for attacks on other men, Judge Julian Goose said: "You plainly have a history of violence."

Anwaar, who hails from Sheffield, pleaded guilty to coercive and controlling behaviour. He also admitted nine counts of assault and criminal damage and was sentenced to serve two-and-a-half years in prison for his abusive treatment of Ms Docherty, The Sun reports.

It is one of the first sentences to be passed since new legislation, outlawing coercive conduct and emotional abuse, was introduced in December 2015. The "coercive or controlling behaviour offence" aims to reduce psychological bullying that does not amount to physical violence but does include extreme psychological and emotional abuse.

If you are suffering from the effects of domestic abuse then contact Refuge on 0808 2000 247 for advice and support.