The \"Shopaholic\" author said in her new message Friday that she feels \"lucky\" both for her health and all the support she has received.

\"I feel very lucky that I am, well, first of all, that I'm in good enough health to be doing this, and that, as you see me, I feel fit and well at the moment,\" Kinsella said. \"And then I feel so doubly lucky to be surrounded by such love. And that's all I can call it.\"

Glioblastoma is considered a rare but \"very aggressive\" form of cancer that develops from a type of brain cell known as an astrocyte, according to the U.S. Genetic and Rare Diseases Information Center.

Symptoms of the cancer can include headache, nausea, vomiting, and drowsiness, according to the Center.

Treatments are available, but there is no known cure for the glioblastoma, and the exact underlying cause is typically unknown. It is the same type of cancer that claimed the life of longtime senator and former presidential candidate John McCain in 2018.

Kinsella offered her support to others affected by cancer, saying, \"I know that some of you are going through a similar disease, or your loved one is, or you're just going through some hardship at the moment, and I share in that. We'll get through it together.\"

The U.K.-based author closed her message by saying, \"I'll see you again on here, but meanwhile, I love you. Thank you.\"

Kinsella's books have sold over 45 million copies, according to her website. Her first book in the Shopaholic series, \"The Secret Dreamworld of a Shopaholic,\" was published in 2000.

\"PHOTO:
David Levenson/Getty Images
PHOTO: Sophie Kinsella, international best selling author, at the FT Weekend Oxford Literary Festival in Oxford, England, March 21, 2018.
>

The series was later turned into a Disney movie, \"Confessions of a Shopaholic,\" starring Isla Fisher and Hugh Dancy.

In addition to the Shopaholic series, Kinsella has written over one dozen other novels, starting with her first book, \"The Tennis Party, which she wrote under her birth name, according to her website.

Kinsella's most recent book, \"Burnout,\" was published last year.

The Walt Disney Co. is the parent company of ABC News and \"Good Morning America.\"

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