Red light therapy can give your energy a boost, and reduce the levels of sugars in your blood, suggesting it could be used by people with type 2 diabetes or are pre-diabetic.
LED red light stimulates our mitochondria, the power houses in our cells, which also makes them more efficient consumers of glucose, or blood sugar.
The therapy reduces glucose levels by 27 percent after meals, and lowers maximum glucose spiking by 7.5 percent, researchers from City University London have found.
The light’s sweet spot is a wavelength of 670 nanometres (nm), and it’s a perfect foil to the amount of blue light—from PCs, smartphones, lighting and sunlight—we are exposed to every day, and which could become a public health problem, the researchers say.
They tested the therapy on a group of 30 healthy people, half of whom were exposed to the therapy and their blood glucose levels were measured every 15 minutes afterwards. The results were compared with samples from the other 15 who had not had the light therapy.
Although the positive effects on glucose levels were seen in healthy people, the researchers believe they would see similar reductions in diabetics, and that red light therapy could be used by them, especially after meals.
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