Environmental Health Perspectives (EHP) is a monthly journal of peer-reviewed research and news on the impact of the environment on human health. EHP is published by the National Institute of Environmental Health Sciences and its content is free online. Print issues are available by paid subscription.DISCLAIMER
The April 2008 Focus article [Environ Health Perspect 116:A160–A167 (2008)] includes a misprint. The first paragraph under the subhead "How Much Is Enough?" should read: "Gilchrest points out a problem with the literature: 'Everyone recommends something different, depending on the studies with which they are most aligned. One study reports an increased risk of prostate cancer for men with 25(OH)D levels above 90 ng/mL, for example [in contrast with the idea that more vitamin D is more protective against cancer].'"