Brushing your teeth often make healthy too. USA is developing a toothbrush check blood sugar and bacteria. There are many projects are developing.
For example firstly a pair of spectacles that helps to jog your memory. Secondly a home camera that helps to check for cancer. The devices are easy to use and encouraging us to lead healthier lives. Thirdly intelligent bandager could quickly identify bacteria. Fourthly sock will detect the amount of pressure in your foot. Finally, the biggest project is melanoma monitor designed to give warnings of cancer
However, with making the technology cheap and simple enough for the domestic user. That is going to be the difficult part.