Trial reportNutrients2017
Avocado Consumption Increases Macular Pigment Density in Older Adults: A Randomized, Controlled Trial.
Trial report in Nutrients, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
37 citing papers in PubMed, 4 syntheses or guidelines pooled it, 67 citations in OpenAlex.
- Exploring avocado consumption and health: a scoping review and evidence map.Frontiers in nutrition · 2025Pooled it
- The Effect of Lutein/Zeaxanthin Intake on Human Macular Pigment Optical Density: A Systematic Review and Meta-Analysis.Advances in nutrition (Bethesda, Md.) · 2021Pooled it
- Dietary Lutein and Cognitive Function in Adults: A Meta-Analysis of Randomized Controlled Trials.Molecules (Basel, Switzerland) · 2021Pooled it
- Pooled it
- Effects of one avocado a day for six months on cognitive performance in overweight adults: A randomized controlled trial.The journal of nutrition, health & aging · 2026Trial
- Goji Berry Intake Increases Macular Pigment Optical Density in Healthy Adults: A Randomized Pilot Trial.Nutrients · 2021Trial
- Dietary and Formulation Potential of Natural Oils and Fats in Ocular Health and Disease: Mechanisms, Evidence, and Future Directions.Nutrients · 2026Review
- Carotenoids in the Context of the Mediterranean Dietary Pattern: From Food Matrix and Bioavailability to Biomarkers and Human Health.Antioxidants (Basel, Switzerland) · 2026Review
- Xanthophyll Carotenoid Intake, Plasma Levels, and Retinal Visualization in Aging and Age-Related Macular Degeneration: ALSTAR2.Investigative ophthalmology & visual science · 2026Article
- Avocado consumption and cognitive health: Refining expectations for single-food dietary interventions.The journal of nutrition, health & aging · 2026Article
- Enhancing the Postharvest Stability of Hass Avocado Through Vacuum Impregnation with Antioxidants.Foods (Basel, Switzerland) · 2025Article
- Effects of Avocado Products on Cardiovascular Risk Factors in Adults: A GRADE-Assessed Systematic Review and Meta-Analysis.Food science & nutrition · 2025Review
- Effect of Exposure to Blue Light from Electronic Devices and the Mediterranean Diet on Macular Pigment.Journal of clinical medicine · 2024Article
- Avocado consumption and markers of inflammation: results from the Multi-Ethnic Study of Atherosclerosis (MESA).European journal of nutrition · 2023Article
- Nutritional Composition of Hass Avocado Pulp.Foods (Basel, Switzerland) · 2023Review
- Effect of Avocado Consumption on Risk Factors of Cardiovascular Diseases: A Systematic Review and Meta-Analysis.Cureus · 2023Review
- Nutrition and cognitive health: A life course approach.Frontiers in public health · 2023Review
- Article
- Avocado Consumption and Risk of Cardiovascular Disease in US Adults.Journal of the American Heart Association · 2022Article
- Food as medicine? Exploring the impact of providing healthy foods on adherence and clinical and economic outcomes.Exploratory research in clinical and social pharmacy · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lutein is selectively incorporated into the macula and brain. Lutein levels in the macula (macular pigment; MP) and the brain are related to better cognition. MP density (MPD) is a biomarker of brain lutein. Avocados are a bioavailable source of lutein. This study tests the effects of the intake of avocado on cognition. This was a six-month, randomized, controlled trial. Healthy subjects consumed one avocado (
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.