Effects of a Single Dose of Wild Blueberries on Mood and Executive Function in Healthy Emerging Adults

Effects of a Single Dose of Wild Blueberries on Mood and Executive Function in Healthy Emerging Adults: a Single-Blind, Randomized Controlled Trial

This study aims to investigate whether consuming a drink containing powdered blueberries (equivalent to 150 g of fresh fruit) can improve mood and executive function in healthy emerging adults.

The present study will examine the psychological effects of a single dose of freeze-dried wild blueberries using a randomized, single-blind, placebo-controlled design. A total of 80 participants will be randomly allocated to consume either a drink prepared with 22 g blueberry powder or a drink prepared with 22 g placebo powder matched for macronutrients, flavour and colour.

Inclusion Criteria:

• 18 to 25 years of age

Exclusion Criteria:

• Any medically significant condition or mental health disorder (e.g. diabetes, endocrine or gastrointestinal disorders)
• Taking medication (excluding hormonal contraception or medication for asthma/seasonal allergies)
• Allergy to blueberries or any other Vaccinium species