Inclusion criteria were BMI 19–25kg/m2 and fluency in English, whereas exclusion criteria were signs of MCI (Mini Mental State Examination (MMSE) Score 15 units/week, orange juice consumption >250ml/d, fruit/vegetable consumption >4 portions/d, caffeine intake >3 drinks/d, actively pursuing weight loss through a dietary intervention, clinical diagnosis of mental illness, neurological disease, chronic fatigue, kidney disease, liver disease, thyroid dysfunction, diabetes mellitus, myocardial infarction or hypertension, and consumption of medication for lipids, hypertension, hypotension or anticoagulation.