Bulimia is, in its very nature, a secretive mental illness that can go unnoticed by friends and family.
Unlike anorexia nervosa, sufferers of bulimia don't tend to experience the same fluctuation in weight loss and gain, making the disorder easier to conceal.
"I didn't think anyone knew in my group or in my family because I hid it that well, I was so ashamed," Scherzinger continued.
"I knew it wasn't normal or healthy because I was hurting myself through this cycle of disordered eating. It was my drug, my addiction. It's an endless vicious cycle."
Speaking about bulimia for the first time was a similarly challenging experience for the singer.
"It still is hard, and thinking about it I try not to well up," she said.
"It is such a horrible paralysing disease and it was such a dark time for me. That's why I can empathise so much with people who have demons and voices in their heads, who aren't nice to themselves. It robs you of living your life.
"But you can recover and you can get rid of it forever," she added. "I did it and that's why it's so important for me to share my story. I felt so alone... but I made myself so alone.
"You hide it from the world, you isolate yourself. But you can beat it - do not give up because you're so special and you're meant for such great things."
"Eating disorders are serious mental illnesses so often caught up in myths and misunderstanding; incredibly lonely and isolating illnesses they often go unnoticed and not spoken about," Rebecca Field, a spokesperson for eating disorder charity BEAT, told The Independent.
"As the UK's leading charity supporting those affected by eating disorders we understand the importance of raising awareness and letting people know that they aren't alone in their fight against their eating disorder.
"It is an extremely brave thing to talk about and we really do appreciate Nicole bringing her story to the attention of the general public. Her positive story of recovery is such an important message to tell people about, to let them know that recovery is both achievable and possible.
* If you think you know someone suffering from an eating disorder, a list of support networks is available through the Ministry of Health's website here.
- Independent