The Senate’s effort to replace the Affordable Care Act — which greatly increased the number of young people covered by health insurance — could drive many of them back off again. And many of those who remain will be paying more for less coverage, or will be priced out of the market altogether.

The good news: The Senate Republicans’ version of an earlier House bill does keep a popular provision of the ACA allowing young adults up to age 26 to stay on their parents’ insurance and some young adults will enjoy lower premiums in the private insurance marketplaces.

The bad news, according to a report from Kaiser Health News, is the bill would also “dramatically reduce health coverage and care for other young adults, according to the bill’s many critics, which include the American Medical Association and the American Hospital Association.”