Less than a week after a procedure to plant two stents in an artery, former President Bill Clinton hosted an anti-childhood obesity event Wednesday at his offices in Harlem.

Speaking before the Alliance for a Healthier Generation, a national organization promoting heart health, the former president said lack of sleep due to his work on the behalf of Haiti's earthquake victims probably contributed to his recent health problems.

Clinton said he is back on his feet he'll continue to work as hard as he can but will try to manage his stress better. He also used his own heart problems to highlight the dangers of childhood obesity.

"The root cause of this was habits that acquired in my childhood, mostly the way I ate and the way it interacted with my own biology and my propensity to produce bad cholesterol which lead to clotting of my arteries."

Clinton also headlined a Black History Month celebration Wednesday night in Co-Op City, Bronx.

The former president's remarks came after a new report by the University of Wisconsin suggested that people who live in Manhattan are healthier than residents of the Bronx.

The study looked at factors that play a role in general health and premature death, like smoking, obesity and unemployment.

New York County ranks ninth in the state for these health factors and 30th in overall length and quality of life.

Richmond and Queens Counties both made the top 20 in each ranking, while Kings County comes in 51st of the 62 counties for health factors and the Bronx is considered the least healthy county in the state, with the highest rates of premature death and poor quality of life.