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Benefits of Bilberry

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Eye fatigue reduction — a 2015 Japanese RCT (n=88) found 480 mg bilberry extract significantly reduced eye fatigue symptoms and improved visual accommodation in VDT workers
  • Retinal microcirculation — anthocyanins improve capillary blood flow in the retina, supporting nutrient delivery and waste removal from photoreceptors
  • Antioxidant protection — bilberry anthocyanins (particularly cyanidin-3-glucoside) protect retinal pigment epithelial cells from oxidative stress in vitro and in vivo
  • Night vision support — while the WWII pilot story is likely apocryphal, some controlled studies show modest improvements in dark adaptation speed with bilberry supplementation

What the Research Says

Bilberry has a moderate evidence base for eye health. A 2012 systematic review identified 30 clinical trials, noting that while earlier studies were methodologically weak, newer RCTs show benefits for eye fatigue and retinal microcirculation. The anthocyanin content is the primary active component, and standardized extracts (25-36% anthocyanins) are recommended for consistent effects.

Related Conditions

Eye FatigueEye HealthRetinal HealthNight Vision
Full Bilberry Guide

References

  1. (). Bilberry extract supplementation for preventing eye fatigue in video display terminal workers. Journal of Nutrition, Health and Aging. DOI
  2. (). Anthocyanosides of Vaccinium myrtillus (bilberry) for night vision — a systematic review of placebo-controlled trials. Survey of Ophthalmology. DOI
  3. (). Recent Research on the Health Benefits of Blueberries and Their Anthocyanins. Advances in Nutrition. DOI