Early Avocado Exposure on Development and the Gut Microbiome in American Hispanic Infants

The overarching goal of this two-arm, randomized clinical trial, is to study how early avocado exposure impacts the gut microbiome and developmental milestones in Hispanic infants. The following aims will be achieved using a randomized, parallel-arm, clinical trial.

Specific Aim 1: Evaluate how avocado consumption modulates the infant GM. Hypothesis 1: Daily avocado exposure will produce distinct structural and functional signatures within the GM compared to control.

Specific Aim 2: Investigate how avocado consumption affects emerging motor and neurocognitive skills in infants.

Hypothesis 2: Daily avocado exposure will improve development compared to the control group.

All measures will be completed at participant homes when infants are 6, 9, and 12 months of age. Infants in the intervention arm will receive a daily amount of avocado and the amount consumed will be measured. Those in the control arm will be asked to limit avocado exposure to no more than once per week.

Those in the control arm will receive the same quantity of avocados for 6 months to provide to their child once the 6-month intervention period has been completed so that control infants may also benefit from avocado consumption.

Inclusion criteria

• 4-6-month-old Hispanic/Latine, non-preterm (>37 weeks gestation) singleton infants
• Infants born to mothers 18 years and older while pregnant
• Parents speak English and/or Spanish
• Families willing to begin feeding infants avocado around 6 months of age or when the infant is ready for solids for a total of 6 months
• Family history of food or latex allergies will be evaluated as avocado is a latex fruit and can cause allergic responses. If either mom or dad is allergic to avocado, physician clearance for infant participation will be needed.
• At least one caregiver in the home must have at least an 8th-grade education level

Exclusion criteria

• Infants with growth, chromosomal, or genetic abnormality, developmental and cognitive impairments, or severe comorbidity that could impact growth and development
• Infants born with congenital abnormalities or developmental delays
• Infant birth weights <2500 g or >4000 g
• Infants introduced to solid foods prior to 3 months of age
• Biological mothers with known substance use during pregnancy (alcohol, tobacco, marijuana, or illegal drugs), or who experienced a high-risk pregnancy (e.g., preeclampsia, diabetes-Types 1 and 2 and gestational, HIV, etc.)