A healthy diet and exercise have been able to accomplish what Dancing with the Stars couldn’t for Chaz Bono — he’s lost 45 pounds!

Cher’s son was photographed Tuesday with a trimmer body while driving around Los Angeles.

PICTURES: Chaz Bono After Tremendous Weight Loss

The transgender activist reveals the secrets to his body transformation on Wednesday’s The Doctors.

He’s been exercising with a trainer and doing kickboxing, ju di zi and yes, he’s still dancing. Besides being supervised by a doctor, he’s using the food delivery system Freshology.

“I’ve been sticking to a really strict diet,” he tells People. “It’s not any type of starvation thing. I’m just cutting out a lot of stuff and eating primarily protein and vegetables and fruit.”

Like most people, he was embarrassed about being overweight. At his heaviest, he was 250 pounds — and now that the 43-year-old has lost so much weight — he wants to lose between 20 to 40 pounds!

The weight loss has created some great health benefits. He is off blood pressure and cholesterol medication and his blood sugar is in a healthy range now.

With the team created by The Doctors, Chaz tells Gwissues, “It’s made it a lot easier than it’s ever been.”