Nature Medicine, Published online: 05 January 2026; doi:10.1038/s41591-025-04111-wMulti-cancer detection tests offer a new paradigm in cancer screening — the use of a single test to simultaneously screen for many cancers — but they raise important ethical questions for their development, evaluation and possible implementation.

Nature Medicine, Published online: 05 January 2026; doi:10.1038/s41591-025-04080-0This multicenter study demonstrates use of dried and capillary blood as a minimally invasive, scalable approach for Alzheimer’s biomarker testing in research, with potential as a widely scalable population-based research approach, especially in resource-limited settings.