Chronobiology and chronomics: detecting and applying the cycles of nature.

We monitor our streets to prevent assault and rodents to develop drugs, but not those for whom the drugs are intended. It took over half a century to begin to monitor blood sugar values in patients with insulin-dependent diabetes. Monitoring blood pressure is equally timely and technically feasible for individual home- and website-based personalised care. It also serves basic science and someday perhaps the management of societal illnesses.