BROOKLYN - A new report published in the New York Post claims thousands of people from Brooklyn and the rest of the city that died from cancer this year could have prevented it. Preventable cancers such as lung cancer, prostate cancer and colon cancer have caused more than 35,000 deaths, according to the study. The American Cancer Society says too many people are smoking and a high number of people aren't getting colonoscopy screenings.The study says breast cancer accounted for 9.6 percent of all cancer deaths in Brooklyn this year, the highest mortality rate in the city. Based on trends from previous years, the study estimates 75 Brooklyn residents die each week from breast cancer. Good news from the study is that the overall cancer death rates have declined in both Brooklyn and New York City. The death rate was 17 percent lower in the borough than a decade ago. The American Cancer Society attributes the decline to medical advances and better monitoring.