I have always been transparent about my journey with addiction, the 25-year-old singer wrote.

What Ive learned is that this illness is not something that disappears or fades with time.

It is something I must continue to overcome and have not done yet.

Your positive thoughts and prayers have helped me navigate through this difficult time.

That evening, arepresentative confirmedthat Lovato was awake and with her family.

Lovato hasfought substance abuse for years, and also grappled with bulimia and bipolar disorder.

To that, sheresponded, I dont have to defend anything but it was Red Bull.

In her Instagram statement Sunday, Lovato spoke of moving forward.

I now need time to heal and focus on my sobriety and road to recovery, she said.