BRain Energy Activation With Ketones to Prevent Alzheimer's Disease

Inclusion Criteria: * The participant must answer Yes to the question ''Do you think your memory is not as good as it was?'' * Have a MoCA Score between 20/30 and 26/30 * Have a QAF score of less than 9/30 * Understand, read and talk French * Having good visual and hearing acuity Exclusion Criteria: * Major cognitive decline or neurodegenerative disease. * Already consuming a daily medium chain triglyceride or ketone supplement. * Soy, milk, gluten or allergy to the study product * Controlled or uncontrolled diabetes * Uncontrolled chronic disease * Vitamin B12 deficit * Clinical anomaly in the blood chemistry profile * QSP-9 score over 19/27 * Taking an anti-cholinergic drugs * Recent change in medication * Active cancer in the last 2 years * General anesthesia in the last 6 months * history of alcohol abuse or dependence in the last 2 years * Participation in other interventional or PET research project * Unable to undergo an MRI or PET scan * History of kidney stones or hypercalcemia * History of cardiovascular events or insufficiency * Renal failure and / or creatinine \<58 umol or\> 110 umol for men and \<46 umol or\> 92 umol for women or if the GFR (glomerular filtration rate) \<60 ml / min / 1.73 m2 * Chronic disease of the digestive system or intestinal malabsorption (celiac disease, chronic pancreatitis, Crohn's disease, etc.) * Body mass index \<20 or voluntary weight loss of more than 5% in the last 6 months.