DENVER -- Denver Broncos quarterback Jay Cutler has been diagnosed with Type 1 diabetes, his business manager Marty Garafalo has confirmed.

Cutler talked to the media Friday morning about his recently-diagnosed condition.

The 25-year-old Cutler found out about two weeks ago that he was diabetic and needed daily insulin injections, the Denver Post first reported on its Web site.

Garafalo told The Associated Press Thursday night that Cutler was managing his disease and "in no way is his football career jeopardized."

Some 21 million Americans have diabetes, meaning their bodies cannot properly turn blood sugar into energy. Either they don't produce enough insulin or don't use it correctly. With the Type 1 form, the body's immune system attacks insulin-producing pancreatic cells, so that patients require insulin injections to survive.

"It's something that he's dealing with and something a lot of other people have," Garafalo said. "Even though it's a serious condition, it's a condition that can be managed. That's the way he's treating it right now.

"Everything's fine," Garafalo continued. "His condition is fine."

The Broncos are confident the diagnosis will not negatively impact his career performance, the Denver Post reported. The Broncos knew of Cutler's disease before the NFL draft last week but didn't select a quarterback, a sign the team is confident their quarterback has his condition under control, the newspaper said.

Cutler has been participating in the Broncos' offseason workout program.

Cutler will have to monitor his diet, particularly carbohydrates, and continually monitor his blood-sugar levels, but modern medicine allows people to live long and healthy lives with the disease. Type I diabetes used to be known as juvenile diabetes because it was more commonly diagnosed in children and young adults, according to the Denver Post. However, there have been cases where people reached middle age before they were diagnosed. Cutler turned 25 on Monday.

Cutler, entering his third NFL season, threw for 3,497 yards and 20 touchdowns last season after supplanting Jake Plummer with five weeks left in the 2006 season.

The 6-foot-3, 233-pound Cutler was taken by the Broncos with the 11th overall pick of the 2006 draft, becoming the first Vanderbilt player taken in the first round since 1986.

Several athletes have enjoyed long professional careers while playing with Type I diabetes, including former baseball star Jackie Robinson and Hockey Hall of Famer Bobby Clarke. Among the former NFL players who played despite Type I diabetes were center Jay Leeuwenburg, who starred at the University of Colorado, quarterback Wade Wilson, and defensive back Mike Echols. Other athletes who have competed with diabetes include Charlotte Bobcats forward Adam Morrison, and golfers Scott Verplank, Michelle McGann and Kelli Kuehne.