Effects of Time of Day and Nut Intake on Cognitive Performance

Effects of Time of Day and Nut Intake on Cognitive Performance: a Crossover Trial in Healthy Adults

This is a 2 x 2-factor crossover design study to investigate the effects of time of day and nuts on post-meal cognitive performance.

In this trial, eligible participants will receive isocaloric meals with or without nuts at lunchtime and dinner time. Cognitive performance will be performed before and 90 min after the meals.

Inclusion Criteria:

• Non-shift workers
• 18-55 years
• BMI between 18.5 and 27 kg/m2,
• Non-smokers
• Without chronic illnesses

Exclusion Criteria:

• Allergy to nuts
• BMI<18.5 or >27 kg/m2
• Presence of dementia or psychiatric disease (depression, Parkinson's disease, schizophrenia)
• Presence of diabetes, serious health conditions that may affect participation e.g. liver or thyroid dysfunction, recent major surgery, cardiovascular disease
• Presence of any sleep disorders
• Taking anti-diabetic or lipid-lowering medication
• Do not speak English
• Pregnant or planning on becoming pregnant
• Breastfeeding