- Peter Rüegg-ETH Zurich
- Read Time: 4 mins
![A woman checks her smartwatch while walking in the park](/images/articles/2021/diabetes-smartwatch-gene-switch-light-insulin-1600-770x440.jpg)
Researchers have developed a gene switch that the green LED light commercial smartwatches emit can “flip,” an approach that could be used to treat diabetes in the future.
Many modern fitness trackers and smartwatches feature integrated LEDs. The green light emitted, whether continuous or pulsed, penetrates the skin and can be used to measure the wearer’s