Before his 4st weight loss, Gregg Wallace was warned that he was heading for a heart attack if he didn't change his ways.

The 56-year-old, who is best known for MasterChef, began his transformation in 2017, dropping down to 12st from over 16st.

In recent years, the culinary mastermind has been vocal about his journey on social media where he's been flaunting his new look.

He admitted that before hitting his goal weight in April, Gregg was indulging in five pints a night, along with multiple takeaways.

Now in an interview with The Telegraph, the TV chef revealed how the coronavirus pandemic has been a wake-up call for him.

Gregg said: "I remember thinking 'Oh God, what if I was still fat?' I could have been really ill'."

Gregg Wallace before his weight loss transformation
Gregg Wallace says he's 'fearful for overweight men' during the pandemic

He added: "I felt incredibly relieved that if I caught it I'd probably be okay. It's made me fearful for other men."

His first step to losing weight was to cut out all the booze, reduce his five pints a day to just two pub visits a week.

Following the alcohol cut, Gregg swapped fried foods and pizzas for healthy home cooked meals.

And to document his weight loss progress, the chef has been showcasing his weight loss with shirtless snaps on social media.

Gregg Wallace showing off his weight loss transformation in a topless snap
The TV chef has been vocal about his transformation

It wasn't just his high cholesterol levels that put Gregg off, he also lost weight thanks to his wife Marie Sterpini, 34, and their son Sid.

He previously told Closer magazine : "Having my baby boy made me want to be fit and strong.

"I can now go for long walks, which I wouldn't have been able to do before."

Gregg trains five times a week and has launched his own website which helps others achieve a healthier lifestyle.

Gregg Wallace showing off his weight loss transformation in a topless snap
The dad lost 4st after cutting his alcohol intake and swapping his foods

The dad chooses lean mince and low-fat meats including chicken and pork for his diet.

Before the pandemic, Gregg hit the gym most days of the week and trained with his PT Danny Rai.

But since gyms have been closed, the star was forced to alter his regime.

Now he works up a sweat at home that includes doing bicep curls with tins of tomatoes instead of actual dumbbells.