How we safeguard big health data | Linked data predicts health trends | More clarity needed on harms in clinical trials | Assessing mitochondrial donation as a preventive measure for some disorders

How analysts are making health data safer | Linked health data can see the bigger picture of healthcare use  | Clinical trials need more clarity on the kind of harms incurred | Donating mitochondria may mitigate the risk of some genetic disorders—but it's not a given.