Hundreds of thousands of young adults are taking advantage of the health care law provision that allows people under 26 to remain on their parents' health plans, some of the nation's largest insurers are reporting. That pace appears to be faster than the government expected. WellPoint, the nation's largest publicly traded health insurer with 34 million customers, said the dependent provision was responsible for adding 280,000 new members. That was about one third its total enrollment growth in the first three months of 2011. Others large insurers said they have added tens of thousands of young adults. Aetna, for example, added fewer than 100,000; Kaiser Permanente, about 90,000; Highmark Inc., about 72,000; Health Care Service Corp., about 82,000; Blue Shield of California, about 22,000, and United Healthcare, about 13,000. The Health and Human Services Department has estimated that about 1.2 million young adults would sign up for coverage in 2011. The early numbers from insurers show it could be much higher, said Aaron Smith, executive director of the Young Invincibles, a Washington-based nonprofit group that advocates for young adults.

Via Kay at Balloon Juice, here's one of the major successes of the Affordable Care Act.

It was and is one of the smartest elements of the plan, which insurers frankly must be pretty happy about, given this is an extremely healthy cohort that isn't likely to cost them much. Some business groups have grumbled that this could make the employers' share of health insurance premiums higher, but so far businesses don't seem to be fighting it.

By the way, the Republicans' "repeal and replace" plan that as of yet doesn't have any "replace" part doesn't have a replacement for this, either. So far all we've seen from them is the Republican budget, written by Paul Ryan, which would dramatically decrease access to healthcare.