Pistachio Consumption Increases Macular Pigment Optical Density in Healthy Adults: A Randomized Controlled Trial.

ABSTRACT:

Background

Pistachios are a bioavailable source of the xanthophyll lutein. Along with zeaxanthin, these plant pigments are major components of macular pigment (MP) in the human retina. MP can be non-invasively measured and is referred to as MP optical density (MPOD). MPOD is modifiable with dietary interventions that include lutein and zeaxanthin (L/Z). Higher MPOD protects the eye from light damage and is positively associated with eye health.

Objectives

This dietary intervention study aimed to evaluate the effect of pistachio consumption on MPOD.

Methods

This single-blinded, randomized controlled trial compared a 12-week pistachio intervention (2 oz/d) with usual diet (UD) on MPOD and serum L/Z in middle-aged to older healthy adults (n = 36) in a 1:1 randomization s

SUBMITTER: Scott TM 

PROVIDER: S-EPMC11795683 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature