LOS ANGELES (AP) — Fears that health insurance exchanges wouldn't attract the young, healthy people needed to make them financially viable are being heightened by the early results of signups in several states.

If it becomes a trend, that could lead to increases in insurance premiums and deductibles next year. Along with the paltry enrollment numbers released this week, officials in a handful of states said those who had managed to sign up were generally older people with medical problems — those with the greatest incentives to get coverage.

It's unclear whether that will persist. Young, healthy people may be more inclined to procrastinate, especially given doubts about the law's technically flawed online signup system. They have until Dec. 15 to sign up if they want to be covered on Jan. 1.