Beware smartwatches that claim to monitor blood sugar without skin prick, FDA says

Man pictured checking his smartwatch while outside with headphones around his neck, as if taking a break from exercise.

Smartwatches and "smart rings" are being marketed as being able to measure blood sugar without requiring a finger prick, but these devices are not authorized by the Food and Drug Administration (FDA) and should not be used, federal officials have warned.

People with diabetes must carefully monitor how their blood glucose levels fluctuate in response to medications, diet and exercise. Inaccurate measurements can lead people to take the wrong dose of insulin or other blood-sugar-lowering drugs, potentially leading to dangerous consequences, like seizures and coma.