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MCT oil / ketones
Ketone bodies as an alternative brain fuel: one 6-month RCT improved cognition in mild Alzheimer's; no convincing data in healthy people.
2/5· Small human trialsEstimated monthly cost: ≈ 20 €
Dose
15–30 g C8 MCT daily, built up gradually.
Timing
Morning, in coffee or food.
⚠ Cautions
Diarrhoea, stomach upset; 30 g = 250 kcal, hampers weight loss; may raise LDL.
What it is
Medium-chain triglycerides (C8/C10) that convert quickly to ketones.
What the evidence shows
BENEFIC (Fortier 2021, n=83 MCI, 6 months, 30 g/day): better episodic memory and executive function. Small sample, industry-funded.
Goals
Brain, memory
Last reviewed: 6 September 2026
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