Robbie Williams has admitted he could write a book about hating himself.
The 47-year-old singer addressed his weight loss and ongoing battle with dysmorphophobia after fans pointed out his slimmed-down appearance in a video posted by his wife Ayda Field earlier this year.
Robbie Williams commented on a post he made on his personal Instagram account: "The ideal weight - the goal is for people to worry about me."
"So what if a genie came and told you that you could choose to have the superpower to fly or eat whatever you want and stay at your goal weight?" she continued.
“I would choose to eat what I like every day and stay at my goal weight. What would you do?" he asked.
Robbie Williams then confessed his "pure self-hatred" and explained his struggles with body dysmorphic disorder.
“I could write a book about self-hatred in terms of my body image. For pure self-hatred, for the ugliness of feeling ugly," he said.
"I have dysmorphophobia and sometimes I can gain more than 18 kg. So you can imagine what my mind sees. Or maybe not, but it's a disaster either way," he continued.
Robbie Williams also revealed that dysmorphophobia is a battle he has faced throughout his life.
"Right now I'm skinny, but because my mind says, 'Well Rob, you've managed to get skinny and now you're old, congratulations, applause,'" he commented.
"The struggle is real, the grief is overwhelming. I've had it all my life. And it never goes away," he emphasized.
“What is it that is so deeply rooted in us, that is so difficult, that makes accepting and loving ourselves so difficult that it seems impossible?” he asked.
Body dysmorphic disorder, which can affect people of all ages and genders, is a person's excessive preoccupation or obsession with an imaginary or minimal flaw in their appearance, which can often lead to cosmetic procedures.
Robbie Williams, who has previously admitted to having Botox, insisted he wasn't "fishing for compliments" with his emotional post and hoped his honesty would help other people who feel the same way.
“Okay, I'm not fishing for compliments. I share it to share it. Sharing to feel some release I guess,” she wrote.
"And if someone else recognizes themselves in the words I wrote, maybe that will help us both," noted Robbie Williams.