Kashif Khan on Instagram: "Here are 4 science-backed ways you can use light as medicine. Most people today rely on supplements, pills, and complicated protocols, but one of the simplest ways is to use something nature already gave us, which is light. Reduce pain A meta-analysis published in the BMJ looked at 1,063 people with osteoarthritis and found that red-light therapy significantly reduced knee pain, and the effects lasted up to 3 months. Kill pathogens A special type of far-UVC light was s