- Pistachio consumption increased macular pigment optical density (MPOD) in this study, which may protect against age-related macular degeneration (AMD).
- Compliance to the pistachio diet was high, with no observed adverse effects.
- Pistachios are rich in lutein and zeaxanthin, which can elevate serum lutein levels.
- MPOD functions as a blue light filter, protecting photoreceptors.
- Approximately 6mg/d of lutein and zeaxanthin was associated with lower AMD risk.
- The study supported previous reports of a ceiling effect on MPOD.
Source: The Journal of Nutrition
