YANA COLLINS LEHMAN, a film production accountant who lives in Brooklyn, knew something was amiss when her 5-year-old son, Beckett, started to announce to no one in particular, “I’m John McCain, and I approved this statement.”

Ms. Collins Lehman, 36, thought: “Oh my God, I’m watching too much news.”

But it is hard not to, she said, with the financial markets in meltdown, and that crisis increasingly intertwined with a frenzied presidential campaign entering the homestretch. This is why her own news diet has spiked to where it feels as if it’s taking over her life. And maybe her son’s, too.

“It’s such a drain on productivity,” Ms. Collins Lehman said. “It’s a compulsion.”

For many, the hunger for information is reminiscent of those harried, harrowing months after Sept. 11, 2001. But seven years ago, there was no iPhone, no Twitter, no YouTube. There was no Google Reader to endlessly feed people updates on their favorite Web sites. Social networking sites, blogs and TiVo were in their infancy.

This explosion of information technology, when combined with an unusual confluence of dramatic  and ongoing  news events, has led many people to conclude that they have given their lives over to a news obsession. They find themselves taking breaks at work every 15 minutes to check the latest updates, and at the end of the day, taking laptops to bed. Then they pad through darkened homes in the predawn to check on the Asian markets.