A national focus on childhood obesity is "overdue," Health and Human Services Secretary Kathleen Sebelius said Tuesday at a government meeting.

She said the administration, including first lady Michelle Obama, plans to take on the health of children. Currently about one-third of kids are overweight or obese, putting them at risk for type 2 diabetes, high blood pressure, sleep apnea, asthma, depression and a whole host of other health problems.