Scientists Say This Simple Daily Habit Is Linked to Better Blood Sugar in Older Adults
Key Points:
- A small study published in Cell Metabolism found that older adults with type 2 diabetes exposed to natural light through windows had better blood sugar control, spending 50% of the time in a healthy glucose range compared to 43% under artificial light.
- The study involved 13 participants around age 70 who maintained consistent diet, exercise, and medication routines while being monitored for blood sugar levels during 4.5-day periods with natural versus artificial light exposure.
- Researchers suggest the benefits may be linked to vitamin D from sunlight or light-sensitive cells in the eye that regulate metabolism, though the study only shows an association and does not prove causation.
- Experts emphasize that natural light exposure should complement, not replace, established diabetes management




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