Wireless Health Care

Imagine a world in which your medicine cabinet notices that you are due for a prescription refill and calls it in. A sensor implanted under your skin detects a fluid buildup in your lungs and alerts your doctor, who decides your heart medication needs an adjustment and contacts the pharmacist to change your dosage. Meanwhile, sensors in your toilet confirm that your body has adjusted well to your other medications but sees indications that you may be a borderline diabetic. Your doctor, given these readings and your family medical history, suggests that you change your diet. Noting that fact, your bathroom scale asks you to punch in a weight-loss goal and starts giving you a regular progress update. Your medical checkup isn't an annual event—it happens every day, simply as you go about your daily life.

If such ambient monitoring and intervention strikes you as a little creepy, think of it this way: It could avert a heart attack, stroke, or other medical crisis. It could keep you out of the hospital and save money for both you and the health care system. Part of the savings would come from radical changes in the management of chronic diseases, which in the United States eats up 75 percent of health care spending, or about US $1.9 trillion each year. And a health-monitoring bathroom is not science fiction. This is what health care could look like within the decade, at least for some....