Emmy Award winner Julia Louis-Dreyfus revealed today that she has been diagnosed with breast cancer.

The “Veep” and “Seinfeld” actress made the announcement on her Twitter account, writing: “1 in 8 women get breast cancer. Today, I’m the one.”

“The good news is that I have the most glorious group of supportive and caring family and friends, and fantastic insurance through my union,” Louis-Dreyfus wrote in her tweet.

“The bad news is that not all women are so lucky, so let’s fight all cancers and make universal health care a reality.”

Her rally for universal healthcare comes after a hectic week in Washington, D.C., which saw the Graham-Cassidy bill — the latest attempt to overturn the Affordable Care Act — fail to get enough support in the U.S. Senate.

On Twitter, there was an immediate outpouring of support for the 11-time Emmy winner, including one message from former Vice President Joe Biden:

Louis-Dreyfus also called attention to just how common breast cancer is. According to the National Cancer Institute, 12.4 percent of women in the U.S. will develop breast cancer at some point in their lives.

In 2016, some 246,660 women and 2,600 men were estimated to be diagnosed with breast cancer in the U.S. alone. And almost 41,000 people—40,450 women and 440 men—were estimated to have died of the disease.

Louis-Dreyfus is the latest in a series of high-profile celebrities, including Lady Gaga and Selena Gomez, who are publicly sharing their experiences with illnesses and are advocating for awareness, compassion, and change.