Science and Technology Daily (Reporter Liu Xia) A new study jointly conducted by scientists from City College London, University of London and University College London shows that shining 670 nanometer red light on a person's back for 15 minutes can reduce blood sugar levels.

The reason is that this red light stimulates energy production within the body's mitochondria and increases glucose consumption, thereby lowering blood sugar levels.

Data show that red light stimulation reduces blood sugar levels by 27.7% after ingesting glucose and reduces the maximum glucose peak by 7.5%.

The relevant paper was published in the latest issue of "Journal of Biophotonics".

  To explore the effect of 670-nanometer red light on blood sugar, the researchers recruited 30 healthy participants and randomly divided them into two groups.

There were 15 people in the 670 nm red light group and 15 people in the placebo (no light) group.

These participants had normal metabolism and were not taking medications.

The researchers then had the participants perform an oral glucose tolerance test and record their blood sugar levels every 15 minutes for the next two hours.

The results showed that people exposed to red light for 15 minutes showed a reduction in peak blood sugar levels and a reduction in total blood sugar within two hours.

  Researchers say that while the latest study was conducted on healthy people, the non-invasive, non-drug technology could help diabetics better control their blood sugar.

Additionally, the study highlights the long-term effects of light on human health, including the potential for blood sugar imbalances caused by prolonged exposure to blue light.

The light emitted by the currently widely used LED lights is blue, which may be a potential public health problem.

  Previous research has confirmed that long-wavelength light between approximately 650 nanometers and 900 nanometers (from the visible to near-infrared range) can increase the production of adenosine triphosphate within the mitochondria, reduce blood sugar, and improve the health and lifespan of animals.

Previous research has also shown that irradiating the backs of mice with 670-nanometer light can also improve symptoms in Parkinson's disease models and diabetic retinopathy mouse models.

(Science and Technology Daily)