The former E! News host tragically lost her mother Litsa in May
Maria lost her mum after a long battle with stage four brain cancer in May this year and wrote about the moment they first found out about Litsa's illness in 2016.
She began: "Today would have been moms five year anniversary of diagnosis. Five years ago I sat on her hospital bed in Hartford, CT where a doctor told her, you have glioblastoma.
"Stage four brain cancer. Mum looked at him and said 'ok'….I ,taking her cue gulped and said 'ok' too.
"In LA we would have home court advantage. My home, my resources, my friends. So we flew her home and I hired a nurse in flight to make it as safe as possible.
"Our journey began that next day and for me it hasn’t stopped. I'm committed to sharing every ounce of information that helped us so it can help you."
The star went on to reveal how her podcast, Better Together with Maria Menounos, is there to help anyone needing support and information, while ending her post by writing: "I miss her beyond. I cry a lot. It’s still so fresh. I try to smile more than cry though. That was her request. She said if something happens promise me to keep smiling."
Fans were quick to send supportive messages to the star, with one writing: "Sending you so much love Maria," while another wrote: "Maria you took the best care of her! You are so amazing and I know she is your forever angel." A third added: My heart is with you and your family Maria. You are an angel on this earth and your strength, insight compassion will support so many.
Maria has had the backing of her husband, Kevin Undergaro has been in a relationship with Maria Menounos since April 1998. He proposed to her on March 9, 2016 and are still happily married.