The FDNY released a new report on Tuesday, detailing the long-term health effects that the Sept. 11, 2001 attacks have had on the department.

“Nine-eleven was not a one-day event for our department,” said FDNY Commissioner Lillian Bonsignore. “It is a day that continues to sicken our members.”

The FDNY lost 343 members on Sept. 11 and officials said they have lost more than 600 other members due to 9/11-related illnesses.

“People forget how dense this dust was, inhaled, filled with particulate matter and toxins and carcinogens,” said FDNY Chief Medical Officer Dr. David Prezant.

The department, however, said medical monitoring has led to life-saving treatment for many of its 16,000 members in the World Trade Center Health Program.

According to the report, 86% of cancer patients in the program were alive five years after a cancer diagnosis.

Officials said they’re also seeing improvements in those who suffer from PTSD and depression, as well as those who experienced symptoms like coughing and shortness of breath.

“Eight out of 10 of our members now feel that their health, their overall health, has improved to either ‘good,’ ‘very good,’ or ‘excellent,’” Prezant said. “That’s dramatic improvement in quality of life.”

“That translates into more time – more time with your loved ones, more birthdays, more holidays, weddings and graduations. Time spent doing the things you love with the people who make it worth it,” Bonsignore said.