For diabetics, the most positive results gleaned from studies on the effects of red and near-infrared light therapy for healing is healing foot ulcers. Historically, these are harder to heal due to poor circulation and high glucose levels, especially in the lower limbs. Studies in animals and humans reveal that red light therapy restores diabetic patients’ normal healing ability by exerting a stimulatory effect on the mitochondria with a resulting increase in adenosine triphosphate (ATP).

